Even in siblings whose parents are same, difference in characteristics because each parent have two different set of genes. they passes only one set of gene to the offspring and half that is pass down is random .
In an organism each characteristic is determine by the pair of genes. Each parent passes only one of the two gene of the pair for each characteristics to its offspring through gametes . These variations are necessary and are part of natural selection . variation in characteristic is important for the organism to adapt to various kind of environment and also helps in prevention of species from extinction .
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Study the illustration.
Which term best describes the circular, enclosing structure
formed by the cell membrane in squares 3 and 4?
O sac
O vesicle
O lysosome
O enzyme
The best term that describes the circular, enclosing structures formed by the cell membrane in squares 3 and 4 is vesicles; option B
What are vesicles in a cell?Vesicles are small membrane-bound sacs that are used by the cells to transport materials within or outside the cell.
These vesicles transport materials such as proteins and fluids surrounded by lipid bilayers to or out of the cell.
Within the cell, vesicles are produced by the Golgi apparatus to transport materials within or outside the cell.
The cell membrane also forms vesicles that enclose substances to be taken into the cell.
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Which options identify a key point of cell theory?
(Select all that apply.)
Cells carry out functions that maintain life.
Living things are nde of one or more cells.
Cells come only from other living cells.
Living things are only made of more than one cell.
Answer:
cells carry out functions that maintain life
living things are made up of one or more cells
Explanation:
Carotenoids are found in several foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants?.
A related function that carotenoids have in plants is b. they protect against oxidative damage from excessive light energy.
We can describe carotenoids as valuable antioxidants that help to prevent many diseases in humans. Foods rich in carotenoids help the body to remove radicals.
Although humans have to take in carotenoids for benefitting from their antioxidant properties, plants are known to produce carotenoids in order to prevent oxidative damage that might occur due to excess light energy. Carotenoids are pigmented and usually give yellow color to the leaves. The carotenoids cause a plant to decrease the amount of light being trapped, hence preventing it from oxidative damage.
Although a part of your question is missing, you might be referring to this question:
Carotenoids are found in several foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants?
a) They serve as accessory pigments.
b) they protect against oxidative damage from excessive light energy
c) They cover the sensitive chromosomes of the plant.
d) They take up toxins from the water.
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to study the details of protein molecules on the surface of a cell a biologist wouldmost likely use a
Scanning electron microscope (SEM) can be used to study the details of protein molecules present on the surface of a cell. These give a three-dimensional structure of the molecules. Thus, the correct option is A.
What is Scanning Electron Microscope (SEM)?Scanning electron microscope (SEM) is a type of electron microscope, designed to directly study the surfaces of solid objects, that utilizes a beam of focused electrons of relatively low energy is scanned in a regular manner over the specimen to be observed.
Scanning electron microscopes use an electron beam to study samples with a resolution. The electrons are emitted from a filament and collect into a beam in the electron source. The beam is focused on the sample by a set of lenses in the column.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question will be:
To study the details of protein molecules on the surface of a cell a biologist would most likely use a:
a. scanning electron microscope
b. transmission electron microscope
c. compound light microscope
d. dissecting microscope
an increase in bioavailable forms of phosphorus in a river leads to a large increase in the population growth rate of algae and cyanobacteria. this suggests that phosphorus is typically in this freshwater habitat.
An increase in bioavailable forms of phosphorus in a river leads to a large increase in the population growth rate of algae and cyanobacteria suggesting that phosphorus is typically D. a limiting nutrient in this freshwater habitat.
As the name suggests, a limiting nutrient can be described as a kind of nutrient whose presence is either short or limited in a particular ecosystem. If there is not a limited supply of these kinds of materials, then some organisms in an ecosystem might grow exponentially.
In the case above, an increase in the bioavailable forms of phosphorus increases the population growth rate of algae and cyanobacteria hence this shows that this bioavailable form of phosphorus in the limiting nutrient. Phosphorus is one of the most common types of limiting nutrient that increases the growth of algae in aquatic ecosystems.
Although a part of your question is missing, you might be referring to this question:
An increase in bioavailable forms of phosphorus in a river leads to a large increase in the population growth rate of algae and cyanobacteria. This suggests that phosphorus is typically _______________ in this freshwater habitat.
A. always abundant
B. not at all present
C. unnecessary for phytoplankton growth
D. a limiting nutrient for phytoplankton growth
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When a cold air mass intrudes on a warm air mass what will most likely happen?
1. The cold air will stop until the warm air moves out of the way
2. The warm air rises slowly
forming long sheets of low clouds and drizzling rain
3. The cold air will push down the warm air and create clear weather
4. The warm air will rapidly rise forming tall clouds
The correct option is option is 4. The warm air will rapidly rise forming tall clouds.
Some clouds are created as air near the Earth's surface warms up and rises. The air immediately above the earth is warmed by sunlight. Since warmed air is less dense and lighter than the air around it, it begins to rise. Its pressure and temperature decrease as it rises, which causes water vapor to condense.
Two distinct air masses do not combine when they come into touch.
Along a path known as a front, they push up against one another. The heated air rises because it is lighter when it encounters the cold air mass. When it cools down at a high altitude, the water vapor inside condenses.
what are weather fronts in cloud formation?
Cloud formation is influenced by weather fronts. When two significant air masses collide near the Earth's surface, fronts form. These include the altocumulus, altostratus, cirrocumulus, cirrostratus, cirrus, cumulonimbus (and related mammatus clouds), nimbostratus, stratus, and stratocumulus cloud types.
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3. Why did you calculate the percent change in mass rather than simply using the change in mass?
When making a cross comparison between different sets of data, computing the percent change is more accurate.
Why is accuracy greater with percentage change?It is more crucial to use the percentage change method because, as you can see, it provides a more accurate description of how the data has changed over time. This is because you will typically be working with larger datasets and quantities. The mass change as a percentage reveals how much of a substance's mass has changed over time. For instance, if a rock loses one-fourth of its mass over the course of a year, its mass has changed by 25%.
What does mass change mean?A change that affects the eligibility requirements for the entire caseload or a sizable and discernible portion of the caseload is referred to as a "mass change" and was started by the state or the federal government.
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Please help me with this
Answer:
didn't you already have a answer.
Explanation:
In a human population, the population momentum effect is most likely to occur in cases in which a large percent of people in the population are in which age-group?.
A large percent of people in the population are in Younger than 18 years old.
What are types and population?A population is an identified grouping of objects with the purpose of analysis and data collection. Examples include people and animals. It comprises of a related collection of species that live in a specific area and have the ability to interbreed.
What is the population's origin?The three primary sources of demographic and socioeconomic statistics are recognized to be administrative records, surveys, and censuses. As part of a comprehensive program for the collection and production of statistical data, these three data sources serve as the main method for gathering fundamental demographic and socioeconomic statistics.
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Organisms categorized into the same_____are able to reproduce.
A. Kingdoms
B. Species
C. Order
D. Class
After initiation of cpr and 1 shock for ventricular fibrillation, this rhythm is present on the next rhythm check. A second shock is given, and chest compressions are resumed immediately. An iv is in place, and no drugs have been given. Bag-mask ventilations are producing visible chest rise. What is your next intervention?.
After initiation of CPR and one shock of VF, A second shock is delivered and chest compressions are immediately resumed. An IV was in place. For the next intervention, you should give epinephrine 1 mg IV / IO.
Epinephrine 1 mg is used bluntly during CPR to increase ROSC (Return of spontaneous circulation) rates and survival to hospital discharge. Epinephrine has a more pronounced therapeutic effect when given early in a resuscitation attempt, especially in non-shock cardiac arrest.
Arterial pulse palpation and end-tidal CO2 monitoring are typically used to detect the return of spontaneous circulation (ROSC) during chest compression.
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You feel thirsty, so you drink a large glass of water. After drinking the water, the feeling of thirst goes away. What system is most responsible for sensing that there are low water levels in the body and letting you know that you need to drink water to maintain your homeostasis?.
Lamina terminalis in the hypothalamus is responsible for regulating homeostasis in the body
Lamina terminalis is located in the anterior of the third ventricle within the hypothalamus
Study has shown that lamina terminalis has direct contact with the bloodstream and can easily detect how hydrated a person is.
Because as the body runs low on water, the volume of blood decreases which simultaneously lead to an increase in salt and other minerals in the blood.
High amount of salt in the blood is a good indication that a person is dehydrated
This information is passed to other brain parts to initiate drinking activity.
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___________ is a disorder that results from an extended exposure to high levels of acid in the body.
A) Metabolic alkalosis
B) Metabolic acidosis
C) Respiratory acidosis
Answer:
Explanation:
Metabolic acidosis is a disorder that results from an extended exposure to high levels of acid in the body.
It occurs when the body produces too much acid.
It can also occur when the kidneys are not removing enough acid from the body.
Select the correct answer. which hormone levels are checked using a urine pregnancy kit to confirm a pregnancy? a. human chorionic gonadotropin b. estrogen c. progesterone d. testosterone
The hormone whose levels are checked using a urine pregnancy kit to confirm a pregnancy is human chorionic gonadotropin; option A.
What are hormones?Hormones are chemical messengers which are produced by the body and transported in the blood to the site where they produce their effects.
Hormones are important molecules in the body as they perform several important functions in the body.
For example, the hormone insulin released by the pancreas is responsible for controlling the blood level of glucose.
Other hormones that are produced by the body include:
human chorionic gonadotropin- which is produced especially in preganncyestrogenprogesteronetestosteroneserotoninglucagon, etc.Learn more about hormones at: https://brainly.com/question/4678959
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Answer 3 questions for 100 points and brainiest.
1. When ocean life dies any carbon stored in them is immedialiety released back into the atmosphere.
A: TRUE
B: False
2: what molecule does surface of the water continues exchange with the atmosphere
A: CO2
B: O
C" NACI SALAT
3: How long would a marine snow have to fall to equal the amount of carbon stored in a whale fall
A: two weeks
B: seven years
C: ten thousand years
D: two thousand years
Thank You!
Answer: 1. True
2. CO2
3. Seven years
Explanation:
If all of our senses ultimately send the same kind of electrical signals to the brain, how do we end up with our distinct sensory and perceptual experiences?.
Since the senses are received by different parts of the brain according to the situation of the body, that is why we have distinct sensory and perceptual experiences.
Senses are the ability of the body to feel the changes or happenings around their body. This action is mediated by the different organs and regulated by the brain.
Brain is the center for the regulation of all the activities of the body. It resides inside the skull where it is protected from injuries. The brain is divided into left and right hemispheres and has three parts: the forebrain, the midbrain and the hindbrain. Different parts of the brain regulate different actions of the body.
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Select two statements that describe the role of cytoplasm in maintaining homeostasis for the cell. a. cytoplasm aids in the movement of organelles. b. cytoplasm supports organelles in a gel-like fluid. c. cytoplasm aids in the repair of damaged cell parts. d. cytoplasm contains chloroplasts for photosynthesis. e. cytoplasm produces nutrients used by other organelles. f. cytoplasm controls what crosses into and out of the cell.
Option a and b; cytoplasm aids in the movement of organelles and supports organelles in a gel-like fluid; both describe the role of cytoplasm in maintaining homeostasis for the cell.
The contents of a cell between the plasma membrane and the nuclear envelope are referred to as the cytoplasm (a structure to be discussed shortly). It is composed of organelles floating in cytosol, a gel-like fluid, the cytoskeleton, and numerous substances. The cytoplasm is home to a variety of cellular organelles.
Homeostasis is the collection of internal circumstances that allow an organism to function optimally. Every organism is always fighting to preserve homeostasis, and every cell in the organism is involved in the conflict. Every organelle in every cell, including the cell membrane, works to preserve homeostasis.
As a result, the cytoplasm's role in maintaining a cell's homeostasis is to provide a supportive environment for the organelles. Furthermore, it promotes the mobility of these organelles, which regulates the shape and size of a cell.
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Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as by products.
Cellular Respiration?A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions. Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration. Glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation are the phases of cellular respiration.The employment of photoautotrophic activities to obtain the glucose required for cellular respiration is an illustration of cellular respiration in plants. This means that plants can produce glucose and oxygen using the light energy they receive from the sun.To learn more about Cellular Respiration? refer to:
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Endocytosis by a single-celled organism is most similar to which function in a muticellular organism? (help pls im taking a test rn)
Endocytosis by a single-celled organism is most similar to phagocytosis function in a multicellular organism.
What are endocytosis and phagocytosis?Endocytosis and phagocytosis can be considered analogous cellular processes because both involve the engulfment of a cell of particles that are found outside the cell in the surrounding media. Phagocytosis occurs in multicellular organisms such as humans whose macrophages of the immune system are able to phagocyte pathogens in immune responses.
Therefore, we can conclude that phagocytosis in multicellular organisms can be analogous to the cellular process of endocytosis, which occurs both in multicellular and unicellular microorganisms.
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Compare the food chain and the food web below. Explain how biodiversity makes one of these more stable than the other. Be sure to use examples from the diagrams. Hint: How does biodiversity in an ecosystem increase organisms' chances of survival?
The food web shows all the feeding relationships while the food chain shows shorter feeding relationships. The wider the food web, the more the survival chances of an organism.
What is the food chain?The food web shows all the feeding relationships that exists in the ecosystem. Recall that the ecosystem is a self sustaining unit in which there is an exchange of materials and energy. Thus, in the ecosystem, all the organisms have what it takes to survive in the system.
The food chain is a shorter feeding relationship between organisms. It ideally involves only three or four living organisms. The food web shows the variety of choices that an organism have when it comes to feeding. As such, the food web is affected by biodiversity. If there are more organisms in the ecosystem, then the food web is wider.
Thus, if there is a great biodiversity in an ecosystem and organisms have a lot of chances in the food web, then they tend to have greater chances of survival.
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select a field of study with in environmental science to start Holly professional in that field would contribute to the environmental study of a lake
Help please with c 2a and b
The study of the lake is called limnology which is concerned with both natural and man made lakes their physical characteristics of ecology
What three stages does a lake go through?The Cycle of Lake Life
Lakes undergo change once they are produced. They experience different life stages, such as youth, adolescence, old age, and death, much like people. All lakes, even the biggest, gradually dry up as their basins fill with dirt and vegetation.
they produce food and water for domestic, industrial, and agricultural use, lakes and ponds are environments of considerable importance to humans. Despite the fact that freshwater ecosystems are fundamentally important to people, they have been badly harmed by a variety of anthropogenic disturbances, which have had a detrimental impact on their structure and function.
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About 2.4 billion years ago, the Great Oxidation Event occurred. During this time, the amount of oxygen in the atmosphere was estimated to go from trace concentrations to concentrations slightly higher than today.
Explain what happened to photosynthetic organisms during the Great Oxidation Event.
Provide examples of what may have occurred to the geosphere and hydrosphere during the Great Oxidation Event.
The answers include the following:
The photosynthetic organisms during the Great oxidation event were killed which led to their extinction.There was more accumulation of oxygen and the existence of more multicellular life forms.What is Great Oxidation?This is referred to as the period in which the earth's atmosphere and the shallow ocean experienced a rise in oxygen content and led to various results.
An example is the extinction of photosynthetic organisms such as anaerobic bacteria and there was also a accumulation of the oxygen content which were present in the atmosphere and water bodies.
The oxygen displaced some gases such as methane which therefore made it more abundant and the main gas which is present in the atmosphere thereby making it the correct choice.
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1. Compare
reflection,
and contrast how transmission,
and absorption affect a wave.
Absorption involves the transfer of energy to a substance, while reflection and transmission include direction and speed alterations. They alter waves' amplitude, frequency, speed, direction, or energy in diverse ways.
How do a wave's transmission, reflection, and absorption differ?Many things can happen when waves interact with an item. The term "transmit" refers to the ability of the wave to go through an object. Either the wave is absorbed, in which case thermal energy is produced, or it is reflected.
What distinguishes reflection from transmittance?Definition. The amount of light reflected from a surface or optical component is indicated by its reflectance. When light is projected onto a surface, it is equivalent to the ratio of incident power to reflected power.
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What makes up chromatin?
RNA wrapped around proteins called histones
DNA wrapped around proteins called histones
a mixture of DNA, RNA, and other nucleic acids
long chains just made up of DNA
B. DNA wrapped around proteins called histones makes up chromatin.
DNA- DNA is the molecule present in nearly all cells that contains the genetic information specific to each individual. It is in charge of producing the proteins necessary for cellular growth and development. DNA strands in chromosomes are tightly wound. DNA segments that code for certain proteins are known as genes.
Histones- Histones are fundamental proteins that may link with negatively charged DNA thanks to their positive charges. Some histones serve as spools for the DNA's filamentous thread to wind around. When chromatin is stretched, it resembles a string of beads under the microscope which is known as Nucleosomes.
Chromatin- The term "chromatin" describes the DNA and protein combination that makes up the chromosomes present in the cell of humans as well as other higher creatures.
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you conduct a voltage clamp experiment in which you hold the presynaptic terminal of a glutamatergic neuron (a neuron that releases glutamate) at 0 mv. when you treat the terminal with ttx, an inward current is recorded. which ion and ion channels are responsible for the current you observe?
You conduct a voltage clamp experiment in which you hold the presynaptic terminal of a glutamatergic neuron (a neuron that releases glutamate) at 0 mv. when you treat the terminal with ttx, an inward current is recorded. Calcium; voltage-gated calcium channels are responsible for the current you observe.
Electrophysiologists utilize the voltage clamp as an experimental technique to measure the ion currents flowing across the membranes of excitable cells.
With a voltage clamp, the researcher can regulate the transmembrane voltage and then measure the current flow through an activated ion channel. A selective ligand or a change in transmembrane voltage can activate an ion channel, acting as a switching mechanism.
In order to study ionic conduction in nerves, Kenneth Cole and George Marmont created an electronic circuit known as a voltage clamp2 in the late 1940s at the University of Chicago.
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what is the luminosity of the constellation crux?
The luminosity of the constellation crux has been defined as the crux which has been a constellation found in the southern sky that has been centered on the four bright stars just the cross- shaped asterism which is known as the Southern Cross.
What is luminosity of the constellation crux?The luminosity of the constellation crux has been defined as the crux which has been a constellation found in the southern sky that has been centered on the four bright stars just the cross- shaped asterism which is known as the Southern Cross.The solar system contain total 8 planet in which 146 moon, asteroid and space rocks, a number of dwarf planet such as Pluto and Italian astronomer Galileo galilei discovers solar system.
The solar system has been defined as a system which is gravitationaly bound of the sun and orbit is occupied by object. The formation of solar system takes place 4.6 billion years ago and this happens due to gravitational collapse of a giant molecular cloud. The most and wast majority of the systems mass in the sun and other part of mass contained by the planet Jupiter.
Therefore, The luminosity of the constellation crux has been defined as the crux which has been a constellation found in the southern sky that has been centered on the four bright stars just the cross- shaped asterism which is known as the Southern Cross.
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PLEASE HELP!! GIVING 15 POINTS!
Carbonic acid (H2CO3) serves as a buffer in human blood. Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). Thus, H2CO3 <--> HCO3- + H+. A decrease in blood pH will result in
A) a decrease in the concentration of H2CO3 and an increase in the concentration of HCO3-.
B) a decrease in the concentrations of H2CO3 and HCO3-.
C) an increase in the concentration of H2CO3 and a decrease in the concentration of HCO3-.
D) an increase in the concentration of H2CO3 and HCO3-.
E) an increase in the concentrations of H2CO3, HCO3-, and OH-.
A decrease in blood pH will result in a decrease in the concentration of [tex]H_{2} CO_{3}[/tex]and an increase in the concentration of [tex]HCO_{3} ^{-}[/tex].
What is the pH?The pH of a solution refers to the concentration of the hydrogen ions that is present in the solution. We know that the pH is the negative logarithm of the hydrogen ion concentration of the system.
Now we know that if we try to reduce the pH of the solution, then there would be need to increase the amount of the hydrogen ions in the system and this could be done when the equilibrium position shifts to the left.
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the enzyme changes shape to fit the substrate.the enzyme changes shape to fit the substrate. the substrate changes shape to fit the enzyme.the substrate changes shape to fit the enzyme. the enzyme helps to break bonds in the substrate.the enzyme helps to break bonds in the substrate. the enzyme helps to create bonds between two substrates.the enzyme helps to create bonds between two substrates. the enzyme is a selective catalyst.
The true statement about enzymes include the following options below:
The enzyme changes shape to fit the substrate.The enzyme helps to break bonds in the substrate. The enzyme helps to create bonds between the two substrates.The enzyme is a selective catalyst.What is an Enzyme?This is referred to as a biological catalyst which speeds up the rate of reaction and they are substrate specific which makes it a selective catalyst.
They also change shape to fit the substrate as described in the lock and key model and are also able to create and break bonds present in the substrate.
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The full question is:
Check all of the following statements which are true.
Cell membranes are selectively permeable, meaning only certain things can get through. What do you think caused the weight change in the gummy bear and eggs?
i don't know what to exactly put but i found something that might help?
even in siblings whose parents are same, difference in characters can be observed. how? class 10 cbse
Answer: Im sorry about before, but the answer is, Both the parents contribute equally to the DNA of next generation during sexual reproduction.
Explanation: