Answer:
they all have a membrane
Explanation:
although some cells may have similar structure and chemical features, the only thing they all share is a membrane^^
A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type in the right side . Is this reaction balanced?
Answer: No
Explanation:
hope it helped
So, how do you think I "Life Comes Back" after being completely wiped out?
Answer:
mutations
Explanation:
A food web is shown below.
Hawk +
Bat
Raccoon
Dragonfly
Owl
Mouse
Beetle
An organism in the food web is labeled X.
a. Identify and describe the ecological role of organism X in the food web.
T
Answer:
it is the most important thing in the ecosystem
Explanation:
because if X is removed from the ecosystem then mouse & beetle is dead because they depends on X organism
Adding or removing heat from the system to change the temperature is an example of what kind of energy?
Thermal energy
Kinetic energy
Sugar energy
Potential energy
please help
Multiple choice question
Un hombre cruza distraído la calle cuando lo sorprende el bocinazo de un auto muy próximo a él. El hombre reacciona y sube a la vereda de un salto, algo agitado y tembloroso. Además de los cambios corporales citados, ¿Cuál/les otro/s pudieron haberle ocurrido ante esta situación? ¿Por qué el cuerpo responde de esa manera? ¿Cuál es la función de esos cambios?
Answer:
- Dilation of the pupils
- Increased heart rate (chronotropism) and the force of contraction of the heart (inotropism), as well as blood pressure.
- Bronchodilation to facilitate the entry of air
- Vasoconstriction in organs that are not needed, such as the abdominal viscera and the kidney
-Vasodilation of muscles, heart, liver and fat tissue
- Hepatic glycogenolysis and lipolysis of adipose tissue
- Increase in blood glucose
Physical stressors; for example cold, hypoglycemia, hemorrhage, hypoxia, necrosis, burn, acute pain are stimuli that alter the physiological state affecting homeostatic mechanisms, and initiate an adaptive response necessary for survival. For their part, psychological stressors are stimuli that threaten the current state of the individual or provoke a state of anticipation even though they do not pose an immediate threat to physiological conditions; need to be processed by the cerebral cortex before initiating the stress response and they depend largely on previous experiences.
Depending on the type of physical or psychological stress, neurons in the brain stem or those in the areas of the brain are activated. limbic system respectively, which through axonal projections affect neurons of the nucleus paraventricular cells of the hypothalamus that synthesize CRH (corticotropin-releasing hormone). Neurons hypophysiotropic in response to a stimulus, releases CRH to the hypothalamic-pituitary portal circulation that reaches the adenohypophysis and controls the synthesis and release of adrenocorticotropin (ACTH) that travels through the bloodstream exerting its feedback mechanism on the adrenal gland. Therefore, the glucocorticoids secreted by the adrenal gland will exert their actions on peripheral tissues as part of the adaptive response to stress.
But in addition, the hypothalamus will be in charge of decoding neuronal signals originating in other brain sites and hormonal signals coming from the periphery. Therefore, hypothalamic neurons not only secrete their product towards the hypothalamic-pituitary portal blood, but also have nerve projections towards other brain regions or to nuclei located in the spinal cord (such as the nucleus of the solitary tract) and controlling the functioning of the autonomic nervous system. Thus the coordinated response to stress includes adrenaline secretion from the adrenal medulla in response to stimulation of the autonomic system; this hormone it causes a state of excitement or alertness in the body allowing it to respond to the challenge.
So, the combined action of the hormones cortisol and adrenaline and the autonomic nervous system (system sympathetic-adrenal) allows a series of vegetative activities involving various apparatus (cardiovascular, digestive, respiratory, muscular, etc.) and the activation of various metabolic pathways (of carbohydrates and lipids fundamentally) to provide the immediate energy demands required before the aggressor stimulus or stress.
Explanation:
During physical exertion or emotional stress, the Sympathetic Nervous System predominates over the Parasympathetic Nervous System. The sympathetic tone favors : intense physical activity for the production of energy in a rapid and prolonged way. The fear, the confusion, the anger also stimulate the SNS.
The flight or fight reaction is the activation of the SNS on the adrenal medulla produces the release of adrenaline and norepinephrine, which in turn produce the following effects:
- Dilation of the pupils
- Increased heart rate (chronotropism) and the force of contraction of the heart (inotropism), as well as blood pressure.
- Bronchodilation to facilitate the entry of air
- Vasoconstriction in organs that are not needed, such as the abdominal viscera and the kidney
-Vasodilation of muscles, heart, liver and fat tissue
- Hepatic glycogenolysis and lipolysis of adipose tissue
- Increase in blood glucose
This ensures a self-defense response when perceiving danger, activating a survival instinct
Suppose that a minnow eats 100 marsh plants in a year. How much DDT build up in the body of the minnow?
Answer:
10,000
Explanation:
because:
1 marsh plant= 1 DDT
a minnow = 100 DDT
if 1 minnow = 100 DDT
100 marsh plants = 100 DDT
you multiply 100 by 100
You get 10,000 as the answer.
Bioaccumulation is the accumulation of persistent substances, many times toxic substances, in the organisms' tissues. In the exposed example, if the minnow eats 100 plants, it will get 100 units of DDT.
----------------------
This problem states that
a farmer sprays DDT in a field.DDT reaches the marsh plants by the wind actionEach plant receives 1 unit of DDT, which remains in the plant by bioacumulation.When talking about bioaccumulation we refer to a net accumulation of metals and other persistent substances in the tissues of an organism.
Accumulation occurs during the individual's life and can be transmitted to other organisms in the trophic chain.
There are two ways in which an organism can get these substances,
from other living beings (trophic chain) by direct consumption from the soil, air, and water.
So, according to the introduction, each plant has one unit of DDT.
1 marsh plant -------------- 1 unit of DDT
We need to find out how much DDT gets one single minnow that eats 100 marsh plants in one year.
So here, we can just perform a three simple rule.
If one plant has 1 DDT units, how many units DDT are in 100 plants??If one minnow eats 100 plants in a year, how many DDT units does it get?1 marsh plant -------------- 1 unit of DDT
100 marsh plants ---------X = 100 units of DDT
If the minnow eats one plant, it will get one unit. But if the minnow eats 100 plants, it will get 100 units of DDT.
-----------------------------
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Mice have two unlinked allele pairs that affect fur color. The table shows how allele pairs affect fur color. The term “agouti” describes fur with pigmentation that changes in each hair from the shaft to the tip, giving the fur a banded appearance. Mice with the aa allele pair are albino, regardless of the second allele-pair combination.
What is the probability of albinism in the offspring of a cross between two mice with AaBb alleles?
3/16
1/16
9/16
4/16
Answer: 4/16
Explanation:
The probability of albinism in the offspring of a cross between two mice with AaBb alleles is 4/16.
What is Probability?This is an expression which tells how likely an event will occur. It is usually gotten by dividing the favorable number of outcomes by the total number of possible outcome.
The total number of possible outcome is 16 and the favorable number of outcomes (AaBb) is 4.
This means the probability is 4/16.
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Choose the option that best matches the description given.
I will give the right answer Brainliest. Human services organizations seek to make changes and help people in need to improve their ______.
employment options
defense mechanisms
quality of life
Answer:
Quality of life
Explanation:
Please help, I need help
Answer:
yes it is c.
Explanation:
Quantitative is a number which would be represented by B. c however is describing something and its quality hints making it a qualitative description
A bad case of tonsillitis can sometimes affect a person’s breathing. How is this possible? Support your claim and explain your reasoning.
Answer: yes
Explanation: since the bacteria is in the throat/tonsils the breathing of a person bc of the water in it can transfer if placed in mouth
Block mountains are caused by faults in the crust, where rocks can move past each other in a rift and rise. the uplifted rocks become block mountains while the intervening dropped blocks are known as graben. Which mountain ranged is formed this way?
Answer:
This is true except they are called fault-block mountains
Explanation:
where are the 46 chromosomes found.
Answer:
The Nucleus!
Explanation:
Have a nice day~
Answer:
Nucleus.
Explanation:
Human chromosomes are located inside the nucleus of the cell. A chromosome is a structure that holds your genes. Your genes determine your traits, such as eye color and blood type. The usual number of chromosomes inside every cell of your body is 46 total chromosomes, or 23 pairs.
Describe the location of the three zones, or belts of latitude
Answer:
Tropical Easterlies is from 0-30 degrees latitude
Prevailing Westerlies is from 30-60 degrees latitude
Polar Easterlies is from 60-90 degrees latitude.
Explanation:
Areas between the Equator (0 degrees N/S) and 30 degrees N/S are referred to as low latitudes. The middle latitudes lie between 30 degrees N and 60 degrees N. The high latitudes are also located between the poles (90 degrees N/S) and 60 degrees N/S.
What is the belts of latitude?The polar easterlies, westerlies, and trade winds are the three main worldwide wind belts. Polar easterlies go towards 60 degrees north and south from the north and south poles, respectively.
They are extremely chilly, dry winds. Between 30 and 60 degrees north and south of the equator, the westerlies can be found.
The three wind belts that cover the entire planet are known as the “global wind belts”: the tropical easterlies (also known as the trade winds) are located close to the equator.
The polar easterlies are located at the north and south poles, and the predominant westerlies are located in the middle of the two.
Therefore, three zones or belts of latitude.
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if a rock has a volume of 2cm3 and a mass of 12g what is its density
Answer:
If a rock has a volume of 2 cm³ and a mass of 12 gr, its density will be 6 gr/cm³.
Explanation:
Density is a parameter used in chemistry and physics, which relates the mass and volume of a solid or compound, establishing the amount of volume that occupies a given mass.
If we observe the density formula, we can see that the greater the mass, the greater the density, while the volume is inversely proportional, so the lower the volume, the greater the density. This formula is:
ρ = m/V
Therefore, according to the mass and volume of the rock
ρ = 12 grs / 2 cm³
ρ = 6 grs/cm³
Being the density of the rock equal to 6 gr/cm³.
A. The mutation did not affect the child.
3. A child is diagnosed with sickle cell disease, a
genetic blood disorder. Which of the following is
true about the mutation that occurred?
B. The mutation produced a beneficial effect.
C. The mutation is due to the environment
D. The mutation produced a harmful effect.
Answer:
probably D because genetics doesnt rlly have to do for environment
Which of the following is NOT a characteristic of animals?
A. Heterotrophic
B. Contain eukaryotic cells
C. Contain cell walls
D. Mobility
Answer:
D
Explanation:
Why is still water an ideal environment for the formation of mold and cast fossils?
a) sediment builds up over organisms
b) sediment turns organisms into rock
c) hard tissue decays under sediment
d) soft tissue is preserved under sediment
Please Ill give Brainliest Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answer:
Surely, It's erosion.
Erosion breaks the rocks down into halves.
Have a nice day
Answer:
its erosion
Explanation:
ANSWER FORM EDGE 2020
The pedigree traces red-green color blindness. Lisa and Monica are half-filled circles. Sam, Bella, Joshua, and Tim are filled-in shapes. Which family members have red-green color blindness? Sam, Tim, Bella, and Joshua Lisa and Monica Ben, Jenny, Mike, Carol, Katie, and Chris Sam, Joshua, and Tim
Answer:
Sam, Tim, Bella, and Joshua
Explanation:
The correct answer would be Sam, Tim, Bella, and Joshua.
The human pedigree is a pictorial representation of a family tree that depicts how a particular trait is inherited across different generations.
In the human pedigree, those phenotypically affected for the trait in question are represented by filled-in shapes, with circles representing females and squares representing males. Half-filled shapes represent heterozygosity or carriers of the trait.
Sam, Tim, Bella, and Joshua were represented by filled-in shapes in the illustrated pedigree. Hence, they are affected for red-green color blindness.
Answer:
A
Explanation:
edge 2021, good luck
Each electron has a charge of 1–, and each proton has a charge of 1+. You can calculate the charge of an atom by subtracting the number of electrons from the number of protons. Move an electron from the sodium to the chlorine atom.
Answer:
Following are the solution to this question:
Explanation:
The creation of bonds:
[tex]Na \to Sodium \\\\Cl \to Chlorine[/tex]
Na has one electron of valence, and Cl has 7 electrons of valence. The transfer of electrons should be made to form a relation of such a nature. All relations among ionic and non is here Sodium is the metal and chlorine is the non-metal.
[tex]\to Na \longrightarrow Na^{+} + e^{-}[/tex]
Neon isoelectronic
[tex]\to Cl + e \longrightarrow Cl^{-}[/tex]
Argon isoelectronic
[tex]\to Na+Cl \longrightarrow NaCl\\\\\to Na^{+} + Cl^{-} \longrightarrow Na^{+}Cl^{-}\\\\[/tex]
Answer:
A.What are the charges of each atom now?
Sodium: +1___ Chlorine: __-1___
B.Is each ion stable? Explain.
-Electromagnetic force pulls them together
Conditions around an enzyme change and affect the shape of the enzymes active sites. Predict how this would affect the enzymes ability to catalyze the reaction
Answer: Enzyme is a special kind of protein which conducts the catalysis of the reaction and speed up the rate of the reaction.
Explanation:
The change in shape of the enzyme will distort or change the shape of the active site of the enzyme thus the enzyme will not be able to bind to the specific substrate and no enzyme substrate complex will be formed so the enzyme will become non-function and will not conduct the catalysis of the reaction. Hence, no product will be formed as no reaction will occur. The high pH and temperature will distort the shape of the enzyme and the active site of the enzyme.
Changes in pH and temperature affect enzymatic activity. Any deviation from the optimum pH level or an increase of temperature over the optimum level denaturalizes the enzyme, and loses its catalytic activity.
----------------------------------
Enzymes, like all proteins, are polypeptidic molecules. They need to get an accurate tridimensional structure to accomplish their function.
There is a limited temperature and pH level at which they lose that structure and denaturalize.
• pH changes
The most accurate configuration for the best catalytic performance depends on the charge of the lateral chains and the environmental pH.
Enzymes have ionizable chemical groups in the lateral chains of their amino acids.
Depending on the environmental pH, these groups will have a positive, negative, or neutral charge.
There is an optimum pH level at which enzymes get the best configuration to accomplish their functions.
Most enzymes are sensitive to any change in pH, which might drastically affect their activity.
So every enzyme has its optimum pH level, and any slight deviations will cause the enzyme denaturalization, hence, its activity loss.
• Temperature changes
In general, the increase in temperature accelerates chemical reactions.
For every 10ºC of temperature increase, the reaction velocity duplicates.
The optimum temperature is the range in which the enzyme expresses its highest activity rate.
⇒ When the environmental temperature is lower than the optimum, there is a slow enzymatic activity.
⇒ When the temperature exceeds the optimum point, the enzymatic activity sharply decreases. It denaturalizes the enzyme. Over this level, the reaction velocity is counteracted by the loss of the catalytic activity due to denaturalization. Enzymatic activity decreases until it completely annulates.
-------------------------------------------------
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Which organ(s) plays a major role in maintaining homeostasis when toxins build up in the body?
heart
kidneys
lungs
pancreas
Answer:
Kidneys is the correct answer!!
Explanation:
Please i need help fast! What societal, ecological, or technical constraints should resource managers consider before proposing solutions?
Answer:
Explanation:When the cumulative impact of humans was small, the environmental implications of ... Ecological constraints add one more set of considerations to the list. ... difficulty of finding short-term solutions that do not aggravate long-term problems. ... Rates of extraction of renewable resources should not exceed regeneration rates.
Answer and Explanation:
Social constraints refer to the social traits and behaviours that affect the project's sustainability within a public. Social constraints include informal norms comprising cultural preference or formal practices, for example, government rules, that a resource manager should consider before proposing a solution. Technical constraints are fixed technical design decisions that might not be altered. Most frequently, technical constraints are brought by the stakeholders at the onset of the plan. There are technical constraints that a resource manager should consider before proposing a solution such as programming language required for numerous reasons, platforms supported or operating system and frame work. Businesses are the most affected by ecological constraints. Ecological constraints such as social expectations and requirements, competitors' act, legal requirements, modification in business, and modification in technology that a resource manager should consider before proposing a solution. Ecological constraints are essential to the business that should be plan ahead.
what are the major parts of most prokaryotic cells?
Answer:
a plasma membrane: an outer covering that separates the cell's interior from its surrounding environment. cytoplasm: a jelly-like cytosol within the cell in which other cellular components are found. DNA: the genetic material of the cell. ribosomes: where protein synthesis occurs.
Filament of a bulb glows due ᴛᴏ.......
effect of the electric current.
Explanation:
The filament of a electric bulb glows because of the heating effect of electric current. As the current passes through the bulb it heats the filament which gives off light.
Using a microscope in the science lab, Jill observed two unknown cell: Cell
1 and Cell 2. Cell 1 she identified as a plant cell and Cell 2 as an animal
cell. Her teacher told her she identified the cells correctly. What did Jill most
likely observe to correctly identify the cells?
A. Cell 2 had a cell membrane and Cell 1 did not.
B. Cell 1 had a cell wall and Cell 2 did not.
C. Cell 2 had a chloroplast and Cell 1 did not.
D. Cell 1 had a nucleus and Cell 2 did not.
Cells are living entities, which are the structural and functional units of life. The cells of the plant and animals differ on the basis of structure and composition.
The correct answer is:
Option B. Cell 1 had a cell wall and Cell 2 did not.
Plant cells are the eukaryotic cells, which consist of the cell organelles like mitochondria, nucleus, cytoplasm, chloroplasts, and Golgi apparatus. The distinctive feature of the plant cell is the presence of a cell wall.
Animals' cells are also the eukaryotic cells, which consist of mitochondria, Golgi apparatus, nucleus, and cytoplasm. The cell membrane is also found in the animal cell. The cell wall is absent in the animal cell.
Thus, the correct answer is Option B.
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Write a five sentence summary of the Digestive system.
Answer:
The digestive system is where most of your food digests. It first starts in your mouth as food that is swallowed goes down to your esophagus, and then into your stomach. Your stomach acids break down those foods for nutrients, and the food particles get broken down into your small and large intestines. Your liver gives out insulin, which gets broken down to glucose, where your body uses that for energy. The rectum is where undigested food goes out as waste.
Explanation:
Some bacteria are helpful because they help us breathe by producing
Answer:
Bacteria such as Porphyromonas gingivalis, Treponema denticola and Prevotella intermedia can help people produce breath.
Explanation:
Answer:
oxygen, some bacteria are helpful because they help us breathe by producing oxygen.
Explanation:
Which best describes the tongue, ears, and nose?
A) sense organs that are part of the central nervous system
B) sense organs that are part of the peripheral nervous system
C) internal organs that are part of the central nervous system
D) internal organs that are part of the peripheral nervous system
Answer: A
It’s all main body parts that help us in everyday life
tongue, ears, and nose are best described as: (A) sense organs that are part of the central nervous system
Meaning of Sense organs
The sense organs can be defined as a group of organs in the human body which helps the human body interact with its environment.
The sense organs helps receive information and send to the brain for interpretation. The major five sense organs are: eye, nose, ear, tongue etc.
In conclusion, tongue, ears, and nose are best described as the sense organs that are part of the central nervous system
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