Answer:
where the question
Explanation:
Answer:
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Explanation:
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Blood islands are ________.
a. clusters of blood-filtering cells in the placenta
b. masses of pluripotent stem cells scattered
throughout the fetal bone marrow
c. vascular tubes that give rise to the embryonic
tubular heart
d. masses of developing blood vessels and formed
elements scattered throughout the embryonic disc
The embryonic disc is covered in thousands of growing blood arteries and developed components.
D is the ideal choice.
Which blood arteries dilate as a result of blood pressure?The big and tiny arteries that carry blood away from the heart can split. Large arteries, which are thicker and more elastic to withstand the high pressures, are subjected to the highest blood flow pressure.
Does a vein qualify as an artery?Blood vessels called arteries transport the body's oxygen-rich blood from the heart. Veins are blood vessels that return the body's low oxygen blood to the heart for reoxygenation.
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Which of these would NOT contribute to a global increase in temperature?
A. Deforestation
B. Burning fossil fuels.
C. Increasing the industrial release of carbon dioxide.
D. Planting trees.
E. Increasing the amount of animal life on earth.
Option which does not contribute to a global increase in temperature is D. Planting trees. So, correct option is D.
Safeguarding existing plants and establishing new ones are definitely beneficial activities. In any case, researchers say we should not put a lot of confidence in trees to save us. Specifically, last year one examination bunch guaranteed we can establish a trillion additional trees and eliminate a fourth of the carbon dioxide right now in the air. These figures have been generally condemned as overhyped and inconsistent. Trees will assist us with easing back environmental change, however they won't switch it all alone.
The basic issue is that our general public is delivering ozone harming substances, particularly carbon dioxide (CO2), that are warming the World's environment to levels we have never experienced. Thus the extraordinary ice sheets are dissolving, adding to rising oceans, and outrageous climate occasions like storms and dry seasons are turning out to be more serious.
Hence, correct option is D.
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Vygotsky theory emphasizes which of the following factors in a child's development? - social interactions in cultural contexts - individual differences in trajectories- learned responses via classical and operant conditioning - the child's representations of the world
Vygotsky theory emphasizes on social interactions in cultural contexts in a child's development.
Lev Vygotsky (1896-1934) was a Russian psychologist who argued that culture has a major impact on a child's cognitive development. Vygotsky's theory is the idea that infants develop new social and cognitive skills through interactions with older individuals. Vygotsky outlined three main concepts related to cognitive development: (i) culture is significant in learning, (ii) language is the root of culture, and (iii) individuals learn and develop within their role in the community. He believed social negotiation was essential for building knowledge and understanding concepts. A simple and concrete example of this is when we help children learn to ride a bicycle - first with training wheels, then as we hold the bicycle steady for them (with some verbal coaching as well), and finally without any help, as children ride independently.
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A portion of a molecule is shown in the diagram below. Which statement best describes the main function of this type of molecule? Select one: a. it determines what traits may be inherited.
b. it is a structural part of the cell wall. c. it stores energy for metabolic processes. d. it transports materials across the cell membrane.
The primary function of this kind of molecule is best described as it transfers things across the cell membrane.
What determines how a protein works?The arrangement of the amino acids determines the precise function and characteristic 3-dimensional structure of each protein. The order of genes determines the combinations of three DNA building blocks (nucleotides) that code for amino acids.
What are the top 5 uses for proteins?In cells, proteins perform a variety of tasks. They function as enzymes that promote structural integrity, control how substances flow through cell membranes, ward off sickness, and organize cell signaling pathways.
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Is the atmosphere seen on the planet mars?
The atmosphere of Mars is much thinner than Earth's. The Red Planet's atmosphere contains more than 95% carbon dioxide and much less than 1% oxygen. People would not be able to breathe the air on Mars.
Yes, there is an atmosphere on Mars, although it is far thinner than the atmosphere on Earth. The majority of the atmosphere on Mars (95%) is made up of carbon dioxide, with traces of other gases like water vapor and nitrogen.
The surface pressure of the Martian atmosphere is only approximately 1% of the atmospheric pressure at sea level on Earth, making it significantly less dense than our atmosphere. Due to its thin atmosphere, Mars lacks the same weather patterns as Earth and is characterized by sharp temperature swings on its surface.
Mars has several characteristics that are similar to those on Earth, such as clouds, dust storms, and polar ice caps, despite having a thin atmosphere. These characteristics, which are produced by interactions between the planet's thin atmosphere and its surface, can offer crucial hints about the temperature and geology of the planet.
Overall, Mars' atmosphere plays a significant role in the planet's ecology and contributes to the development of its distinctive traits and characteristics.
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the esp gene encodes a protein that alters the structure of the insulin receptor on osteoblasts and interferes with the binding of insulin to the receptor. a researcher created a group of osteoblasts with an esp mutation that prevented the production of a functional esp product (mutant). the researcher then exposed the mutant strain and a normal strain that expresses esp to glucose and compared the levels of insulin in the blood near the osteoblasts (figure 2).
The osteoblasts in the bone secrete osteocalcin in the pancreas to change their activity this justifies the claim that osteocalcin is a hormone
Osteocalcin is a hormone that is secreted and influences matrix mineralization and global metabolism. Osteocalcin governs glucose metabolism via an endocrine loop between the bone and the pancreas. Osteocalcin has been identified as a hormone. Bone is classified as an endocrine organ. The decarboxylated form of osteocalcin acts as a hormone. Osteocalcin is involved in the regulation of glucose, skeletal muscle operation, brain function, male fertility, hepatic steatosis, and arterial calcification. Increased osteocalcin levels indicate increased bone turnover.
Osteocalcin is only secreted by osteoblasts and has only minimal impacts on bone mineralization and density. Instead, it has been shown to regulate several physiological processes in an endocrine manner, including glucose homeostasis and physical performance, brain development, cognition, and male fertility.
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Complete question :
Hormones are chemical signals that are released by cells in one part of the body that travel through the bloodstream to signal cells in another part of the body. Insulin is a hormone that is released by the pancreas that induces the uptake of glucose molecules from the bloodstream into cells. In this way, insulin lowers the overall blood glucose levels of the body. Osteoblasts and osteoclasts are two types of bone cells that play a role in regulating blood glucose levels (Figure 1).
Binding of insulin to the insulin receptor on osteoblasts activates a signaling pathway that results in osteoblasts releasing a molecule, OPG, that binds to the neighboring osteoclasts. In response, the osteoclasts release protons (H+) and create an area of lower pH outside the cell. This low pH activates osteocalcin, a protein secreted in an inactive form by osteoblasts.
The Esp gene encodes a protein that alters the structure of the insulin receptor on osteoblasts and interferes with the binding of insulin to the receptor. A researcher created a group of osteoblasts with an Esp mutation that prevented the production of a functional Esp product (mutant). The researcher then exposed the mutant strain and a normal strain that expresses Esp to glucose and compared the levels of insulin in the blood near the osteoblasts (Figure 2)
Based on the information provided, which of the following best justifies the claim that osteocalcin is a hormone?
Could the biological, psychological, and sociocultural factors behind psychological disorders all be correct, or is there only one factor that dominates
The biological, psychological, and sociocultural factors behind psychological disorders always are different and they exhibit symptoms in order that these types of disorders may emerge.
What are the factors behind psychological disorders?The factors behind psychological disorders are diverse and they include biological, psychological, and sociocultural risk factors associated with the emergence of such problems.
For example, a traumatic situation such as the death of a family member may be the trigger that initiates the emergence of psychological disorders such as depression, which is one of the most common types of mental cognitive disorders affecting people around the world.
Therefore, with this data, we can see that the factors behind psychological disorders are diverse and always one of them should prevail to initiate a psychological disorder in a normal healthy individual, thereby it is important to consider biological, psychological, and sociocultural risk factors in the development of these cognitive problems.
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if two populations of the same species have different mating seasons, one in fall and the other in spring, this may lead to a speciation event due to
if two populations of the same species have different mating seasons, one in fall and the other in spring, this may lead to a speciation event due to allopatric speciation.
Allopatric speciation, also known as geographic speciation, vicariant speciation, is a type of evolutionary change that occurs when biological populations become geographically isolated from one another to the point where gene flow is prevented or hampered.
Allopatric speciation takes place when a species divides into two distinct groups that are geographically separated from one another. A physical barrier, such as a mountain range or a waterway, prevents them from breeding with one another.
Allopatric speciation, also known as geographic speciation, arises when biological populations of a single species become secluded due to geographical changes like mountain formation or social changes like emigration.
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In the human body, several organs may work together as a more complex
system to perform an important function. What is this more complex system
called?
A. Body system
B. Tissue
C. Organism
D. Organelle
SUBMIT
Where do cells obtain the energy needed for their vital functions? (Module 2.19C)
Energy comes from breaking high energy bonds in a compound.
Energy comes from the type of sugar molecule bound to the structure.
Energy depends on the number of rings in their structure.
Energy comes from the type of nitrogenous base in the structure.
Energy comes from the number of enzymes that are present in the cell.
Cells obtain the energy needed for their vital functions by breaking high energy bonds in a compound.
Organic molecules needed for the production of cell components and tissues must be obtained from food. The main source of organic carbons in the body tissue is carbohydrates or sugars. Digestible carbohydrates are eventually converted into glucose and utilized to provide energy via metabolic pathways during digestion.
To yield and retain the biological order that allows them to survive, cells necessitate a constant supply of energy. This cell energy is obtained from the chemical bond energy in food molecules, and it is used to power cells.
Cells use ATP as their energy currency. It enables cells to temporarily store energy and transport it within themselves to assist endergonic chemical reactions. ATP has the structure of an RNA nucleotide with three phosphate groups connected.
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which of the following brain imaging techniques records electrical activity in the brain in response to a visual or auditory stimulus?
Brain imaging techniques such as EEG and fMRI record electrical brain activity that occurs in response to the an auditory or visual stimulus.
Electroencephalography (EEG) as well as functional magnetic resonance imaging (fMRI) both are highly effective methods for evaluating human brain function. The combination's unique appeal stems from the fact that the both methods seem to be complementary in fundamental ways.
EEG provides high temporal resolution and is a direct measurement of neural mass activity. FMRI is an indirect method of measuring neural activity that is based on hemodynamic changes and has a high spatial resolution. Both methods are very sensitive to changes in synaptic activity, implying that the same neural events can be characterized with high temporal and spatial resolution using simultaneous EEG and fMRI. Because EEG-measured neural oscillations are a key mechanism for multi-site communication in the brain, EEG-fMRI can provide new insights into the connectivity mechanisms of brain networks.
The acquisition of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) at the same time is a very promising non-invasive technique for studying human brain function.
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Which Of The Five Marks In The Tree Above Corresponds To The Most Recent Common Ancestor Of A Mushroom And A Sponge?
The Most Recent Common Ancestor Of A Mushroom And A Sponge the branch point at which the lineages leading to these two species diverge.
What is common ancestor?In evolutionary biology, common ancestor refers to when one species is the ancestor of two or more species later in time. According to contemporary evolutionary biology, all living beings are descended from a single ancestor known as the last universal common ancestor of all life on Earth.
How to find ancestor by phylogenetic tree?Follow each taxon's lineage back in time (towards the base of the tree) until all the lineages meet up to find the most recent common ancestor of a group of taxa on a phylogenetic tree. Their most recent common ancestor is represented by that node.
The Most Recent Common Ancestor Of A Mushroom And A Sponge the branch point at which the lineages leading to these two species diverge.
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The structure in the ear that is most directly responsible for the ability to discriminate different pitches of sound is the
A) oval window.
B) round window.
C) basilar membrane.
D) tectorial membrane.
E) tympanic membrane.
C) basilar membrane. A basilar membrane, which varies in stiffness or resonance along its length, is used by the cochlea to analyze sound frequencies and determine pitch.
Which area of the inner ear can distinguish between different sound frequencies?Hair cells, so named after the clusters of hair-like strands that protrude from their summits, are the sensory cells that pick up on these sounds.A basilar membrane, which would be rolled up like a carpet & tucked inside the cochlea, an inner ear structure resembling a snail shell, is covered in hair cells and has a flat surface.
The basilar membrane's function is what?A distal end is the inner ear's primary mechanical component.Over its length, it has graded weight and stiffness characteristics, as well as its vibration pattern separate incoming sound into component frequencies, which trigger various cochlear areas.
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you are out at night and hear a sound in the bushes. the electrical signal carrying this information to your brain is carried first by a question 3 options: O sensory neuron O motor neuron O interneuron O glial cell O efferent neuron
O all of these choices are correct.
You are out at night and hear a sound in the bushes. the electrical signal carrying this information to carrying this information to your brain is carried first by Sensory neuron.
What is sensory neuron?
A sensory neuron (also known as an afferent neuron) is a type of nerve cell that perceives and responds to external information. Sensory neurons acquire information from their receptors in the peripheral nervous system and transform it into electrical impulses. These impulses serve as signals, and they are sent to the central nervous system. This information is then received and processed by the spinal cord and brain.
Sensory neurons receive and transfer information from the peripheral nervous system to a more central site in the central nervous system, such as the spinal cord or the brain.
The signal is transduced in the sensory receptor at the dendritic end of the neuron. This is the point at which the new signal is produced in response to a stimulus, such as a scent, touch, or taste.
Hence, sensory neuron carries electrical signal.
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How many hours would it take for a bac of 0.03% to reduce to 0.0%
Explanation:
The number of hours it would take for a blood alcohol concentration (BAC) of 0.03% to reduce to 0.0% depends on a variety of factors, including the person's age, weight, gender, and overall health. In general, however, it is estimated that it takes about one hour for the body to metabolize one standard drink, which is equivalent to about 0.5 ounces of pure alcohol.
Assuming that a person has a BAC of 0.03% and that they have not consumed any additional alcohol during that time, it would take approximately 9 hours for their BAC to reduce to 0.0%. This is because 0.03% is equivalent to 0.5 ounces of alcohol, and it takes one hour to metabolize each 0.5 ounces of alcohol.
It is important to note, however, that this is only an approximate estimate, and the actual time it takes for a person's BAC to reduce to 0.0% can vary depending on the factors mentioned above. In some cases, it may take longer or shorter than 9 hours for a person's BAC to reduce to 0.0%. It is also important to remember that drinking alcohol can have serious health and safety risks, and that it is always best to drink responsibly and in moderation
Does waters density increase when it changes into ice
Answer: No
Explanation: The extra hydrogen bonds that occur when water freezes increase the space between molecules, causing a decrease in overall density. The density is cooled.
What would happen if you forget to add rnase solution in dna extraction?
In this lab, you will study mice with two traits.
Fur Color
Black is dominant (B). White is recessive (b).
Eye Color
Black is dominant (E). Red is recessive (e).
Intro
Genotype: BBee
Phenotype:
DONE
fur and
eyes
Answer:
the genotype of the mice in this lab is BBee, which results in a phenotype of black fur and black eyes.................
Explanation:
Based on the information provided, the genotype of the mice in this lab is BBee, which means that they have the alleles B and E for fur color and eye color, respectively. The phenotype of the mice, which refers to their observable physical characteristics, is black fur and black eyes.
The B and E alleles are dominant, which means that they will mask the expression of the recessive alleles (b and e). Therefore, even if the mice have one copy of the recessive alleles, their fur will be black and their eyes will be black, because the dominant alleles are expressed.
To summarize, the genotype of the mice in this lab is BBee, which results in a phenotype of black fur and black eyes.
Answer:
Genotype: BBee
Phenotype: black fur and red eyes
Explanation:
BB refers to dominant black fur and ee regers to recessive red eyes.
1. which of the following best compares the structures found in plant cells and animal cells? plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do. animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do. plant cells contain rough endoplasmic reticulum and a golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes. animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles.
Answer:
animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.
Explanation:
This statement plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do is incorrect as plant cells have do have mitochondria and animal cells do not have a rigid cell wall.
This statement plant cells contain rough endoplasmic reticulum and a golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes is incorrect as both plant cells and animal cells have rough endoplasmic reticulum, smooth endoplasmic reticulum surrounded by lysosomes and a golgi apparatus.
This statement: animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles is incorrect as animal cells do not have a cell wall and a large central vacuole.
The ______ piriform cortex produces representations of features of odorant molecules. a) anterior b) posterior c) lateral d) superior.
Your anwser is A. Anterior.
which of these is not a division of the bony labyrinth? vestibule cochlea utricle semicircular canals
The utricle is not a part of the bony labyrinth. It is part of the membranous labyrinth and is responsible for detecting linear acceleration and gravity. The bony labyrinth is composed of the cochlea, vestibule, and semicircular canals, each of which plays an important role in hearing and balance.
The bony labyrinth is a complex structure located in the inner ear, consisting of three parts: the cochlea, the vestibule, and the semicircular canals. While each of these structures play an important role in our sense of hearing and balance, the utricle is not part of the bony labyrinth.
The utricle is a fluid-filled sac located in the inner ear, adjacent to the cochlea and vestibule. It is part of the membranous labyrinth, which is the non-bony, membranous part of the inner ear. The utricle is responsible for detecting linear acceleration, such as when the head moves in a straight line. It also detects gravity, which helps keep our balance.
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A scientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. What population is most likely to be a control group for the investigation?
Amount of food
Number of bird feeders
Invasive bird populations
Local backyard birdfeeders without food
The native bird population will probably serve as the study's control group.
What does the term "native birds" mean?
Native bird refers to any individual of a species of the Aves class that is native to Antarctica or visits periodically as a result of natural migrations, as defined in this part's subpart D.
What does a bird represent spiritually?
In countless cultures around the world, birds have represented luck, health, wealth, fertility, love, truthfulness, and a variety of other things.
Are birds significant to native cultures?
Indigenous cultures value their connections to familiar birds. It demonstrates our ties to the earth. The "inheritance" is this extensive cultural knowledge.
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which of the following is not an advantage of active transport? it is faster than passive transport. it does not require added energy. it is specific for a particular nutrient. it transports nutrients against the diffusion gradient.
It does not require added energy.
The assertion 'it does not require added energy' is not an advantage of active transport. Active transport requires energy, allows cells to move materials against their concentration gradient and is specific, but typically isn't faster than passive transport.
Explanation:Among the options given, the statement 'it does not require added energy' is not an advantage of active transport. Active transport uses energy, typically in the form of ATP, while passive transport does not. Active transport allows cells to move nutrients, ions, and other materials against their concentration gradient, i.e., from an area of low concentration to an area of high concentration. This process is specific, enabling the transport of certain substances into or out of the cell, but it's not typically faster than passive transport because it relies on this added energy.
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Power house of cell called?
The bones in the front leg of a lizard and in the wing of a bat, which are evolutionarily derived from their common ancestor are said to be analogous O homologous O sympatric
O functionally similar O convergent
A front paws of cats are similar to the wings of a bat. The term "homologous" mean Cat feet and bat wings share the common ancestor that had a limb with such a bone structure comparable to that of cat legs.
What forms the structure of bone?A protein collagen use to forms the structure of the bones, as well as the calcium, a mineral, gives the framework hardness and strength. When the other body parts has been require calcium, bones transfer some of the calcium they have stored into the blood.
RNA may be found in any biological tissue which has not yet degraded. One of the finest areas to find DNA from decaying human remains is in bones. DNA can typically be extracted from the flesh once it has rotted.
Therefore, A front paws of cats are similar to the wings of a bat. The term "homologous" mean Cat feet and bat wings share the common ancestor that had a limb with such a bone structure comparable to that of cat legs.
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Sequencing of DNA from tumor sample reveals that one allele of RB has been deleted and the other allele contains missense mutation The RB protein in the tumor cells most likely Multlple Cholce binds to EZF, but has no effect on cell division. does not bind t0 EZF, resulting In Inhlbitlon of cell division does not bind to EZF, resulting in uncontrolled cell division: blnds to EZF; thereby promoting uncontrolled cell division: binds to EZF thereby inhibiting cell division:
The RB protein in the tumor cells most likely d)binds to E2F, thereby promoting uncontrolled cell division. So, correct option is d.
The retinoblastoma protein (protein name truncated pRb; quality name contracted Rb, RB or RB1) is a proto-oncogenic cancer silencer protein that is broken in a few significant cancers. One capability of pRb is to forestall unnecessary cell development by hindering cell cycle movement until a phone is prepared to partition.
At the point when the cell is prepared to partition, pRb is phosphorylated, inactivating it, and the cell cycle is permitted to advance. It is likewise an enrollment specialist of a few chromatin renovating proteins, for example, methylases and acetylases.
pRb has a place with the pocket protein family, whose individuals have a pocket for the useful restricting of other proteins. Ought to an oncogenic protein, for example, those created by cells tainted by high-risk kinds of human papillomavirus, tie and inactivate pRb, this can prompt disease.
Hence, correct option is d.
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(Complete question) is:
Sequencing of DNA from tumor sample reveals that one allele of RB has been deleted and the other allele contains missense mutation The RB protein in the tumor cells most likely Multlple Cholce
a) binds to EZF, but has no effect on cell division.
b)does not bind t0 EZF, resulting In Inhlbitlon of cell division does not bind to EZF,
c)resulting in uncontrolled cell division:
d) binds to EZF; thereby promoting uncontrolled cell division:
e)binds to EZF thereby inhibiting cell division:
Classify these sequences based on their potential to modify protein products. The plain letters in the sequence represent protein coding regions, and the bold letters represent no coding regions
These alleles sequences based on their potential to modify protein products. The plain letters in the sequence represent protein coding regions, and the bold letters represent no coding regions.
The sequences are as following:
ATTGAGACCGT → GAGACCAGT TATAATATTA → TATATATTA ATTCATCTGG → ATTCATCGTGG What are alleles?Alleles are the types of variation of sequence in a same nucleotides of same DNA.
Now following are the sequences based on their potential to modify protein products but we can't define the coding or no coding region as bold or plain letters are not clear here.
1).ATTGAGACCGT → GAGACCAGT
Chance of Alteration in Protein bcz in starting alleles ATT is missing in the after product.2). TATAATATTA → TATATATTA
Chance of Alteration in Protein as there is modification present in the AA alleles in between.3). ATTCATCTGG → ATTCATCGTGG
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The receptor system is the part of your nervous system that detects or senses the environment .
Ture or flase
The receptor system is the part of your nervous system which detects or senses the environment. This statement is True.
What is Receptor?Receptors are defined as chemical structures composed of proteins, which receive and transduce signals that can be integrated into biological systems. These molecules inside or on the surface of the cell bind to a specific substance and produce a specific effect in the cell.
When a ligand binds to the receptor, the receptor may change conformation which allows the signal to be transmitted into the cell while in some cases the receptors will remain on the cell surface and the ligand will eventually diffuse out.
It is found inside of the cell (in the cytoplasm or nucleus), and cell surface receptors, which are found in the plasma membrane.
Thus, the receptor system is the part of your nervous system which detects or senses the environment. This statement is True.
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Which of the following is a test forensic scientists might use for chemical analysis?
Size of insect
O Color pattern on insect
Range map of insect
DNA extracted from crop
This kind of chemical analysis can be carried out using spectroscopy of atomic absorption and plasma-atom inductively coupled emission spectroscopy.
In the simplest words, what is spectroscopy?Spectroscopy is the study about how light and also other types of electromagnetic radiation are taken and emitted by materials. In a manner similar to how a prism divides light it into rainbow of colors, it entails splitting light (or more accurately, electromagnetic phenomena) into its individual wavelengths (a spectrum).
What is the spectroscopic principle?The fundamental idea behind all absorption spectroscopy is to expose a sample to an electromagnetic field and then see how it reacts. Typically, the response is measured in relation to the radiation wavelength.
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Answer: CROP (DNA extracted from crop)
Explanation: "... when insects eat a specific food source, such as flesh, plant matter, or blood, they store this in their crop. By grinding the larva or adult insect up into a slurry, forensic scientists can analyze the composition of the food in the crop for chemicals and even DNA."
what is frontal EEG asymmetry and evaluate its relationship with individual differences in either depression OR anxiety.
Answer:
rip bozo
Explanation:
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