In translation process, the initiator tRNA adds formyl methionine first.
What is translation ?Translation is the formation of protein from m-RNA. Similar to mRNA synthesis, protein synthesis can be broken down into three stages: initiation, elongation, and termination.
The first stage of protein synthesis is the formation of an initiating complex.This complex in E. coli is composed of the short 30S ribosome, the mRNA template, three initiation factors (IFs; IF-1, IF-2, and IF-3), and a particular initiator tRNA known as tRNA Metf.Met-tRNAThe initiator tRNA, or I is a particular tRNA that carries the amino acid methionine.Instead of looking for the Shine-Dalgarno sequence, the eukaryotic initiation complex looks for the 5′ cap of the eukaryotic mRNA. It then follows the mRNA from 5′ to 3′ until the AUG start codon is found.Currently, the Met-tRNAi, mRNA, and 40S subunit complexes interact with the 60S subunit.To know more about RNA :
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A decrease in the functionality of this structure in a cell would directly decrease the ability of the cell to exchange materials with its environment to maintain homeostasis.
A Structure 10
B Structure 3
C Structure 7
D Structure 1
Answer: A. Structure 10
Explanation: An intact and functional cell membrane is needed in order for cells to maintain homeostasis. All exchanging of materials has to occur through this structure.
Select the correct answer.
How does air pollution impact crops?
OA.
О в.
O C.
O D.
Air pollution has no impact on crops.
Air pollution causes plants to produce less.
Air pollution kills many types of plants.
Air pollution takes nutrients from the soil.
In the defense mechanism known as _____, the ego refuses to acknowledge anxiety-producing realities.
In the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
What is the denial defense mechanism?The denial defense mechanism can be defined as an unconscious mechanism by which a person may ignore the fasts in the real world in order to avoid excessive levels of stress that may be harmful to his / her health and being, therefore, a part of a defensive strategy from external stimuli.
In conclusion, in the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
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Like a bubble
I move around the cell
Carrying goods and proteins as well.
What am I?
Answer:
A Golgi Apparatus
Explanation:
Determine the stimulus, receptor, control center response, and effector for gas exchange in plants
PLEASE HELP ME ITS URGENTTTTTTTT
Answer:
The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
Stomata (the receptors of gas exchange process) are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf. In low light the guard cells lose water and become flaccid, causing the stomata to close.
Stomata, which are microscopic pores on leaves and stems that act as receptors in gas exchange, are common in plants.
Stimulation, which is caused by things like light and the environment, demands gas exchange. The plant's internal regulatory system, the control center, initiates the opening or closing of the stomata. The effectors, the guard cells, regulate the size of stomatal pores to facilitate this response. When under stress, the stomata close to prevent water loss and open to allow the entry of carbon dioxide for photosynthesis. By absorbing carbon dioxide and releasing oxygen during photosynthesis, this exchange enables plants to maintain a stable water balance by controlling transpiration.
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Urgently!! I have test tomorrow!! I Need To Know!!
Which organelle generates energy for the cell (Powerhouse)?
Answer:
Mitochondria is the powerhouse of the cell
Explanation:
Mitochondria are known as the “powerhouse of the cell.” The organelle that is responsible for the production of energy in a cell is the mitochondria. This is the most vital part of the cell as it takes the food and makes energy for the other parts of the cell.
Mitochondria play host to one of the most important processes in your body, called cellular respiration. Taking in glucose and oxygen, mitochondria produce energy, which they capture and package as energy-rich molecules of ATP.
I hope its helpful•••
Answer:
Mitochondrion
Explanation:
Mitochondrion generates ATP which is necessary for our body as it uses this energy to perform bodily functions.
Hope it helps!
Which of the following best describes the function of the enzyme Catalase?
Question 2 options:
Catalase is a poison produced by cells that is broken down by hydrogen peroxide
Catalase is a protein that is used by cells to slow down poisonous chemical reactions.
Catalase breaks down poisonous hydrogen peroxide into water and oxygen gas.
Catalase puts together water and oxygen gas to make poisonous hydrogen peroxide.
The statement that best describes the function of the enzyme Catalase is as follows: Catalase breaks down poisonous hydrogen peroxide into water and oxygen gas (option C).
What is an enzyme?An enzyme is a globular protein that catalyses a biological chemical reaction. A catalytic enzyme is a specific kind of enzyme that breaks down substrates into products.
Catalase is an example of a catalytic enzyme found in the liver that catalyses the decomposition of hydrogen peroxide to water and oxygen.
Therefore, according to this question, the statement that best describes the function of the enzyme Catalase is as follows: Catalase breaks down poisonous hydrogen peroxide into water and oxygen gas.
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In the following explanation, which two body systems are working together to help maintain balanced blood sugar levels?
When sugar levels in your bloodstream drop, your pancreas releases a hormone called glucagon. This makes your liver break down the glycogen into glucose which can then make its way into your cells where it can be used for cellular respiration.
Question 3 options:
Circulatory and Integumentary Systems
Muscular and Skeletal Systems
Endocrine and Circulatory Systems
Skin and Respiratory Systems
The two body systems are working together to help maintain balanced blood sugar levels are endocrine and circulatory systems and is denoted as option C.
What is Endocrine system?This type of system comprises of organs which are referred to as glands and secrete hormones which are required for metabolic reactions in the body system.
The pancreas is an organ which secretes the hormone known as insulin which is responsible in the regulation of sugar level in the blood. The insulin produced is then distributed to target areas through the circulatory system which is why option C was chosen.
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The creation of polymers from monomers is known as
Responses
hydrolysis
hydrolysis
ionic bonding
ionic bonding
condensation (dehydration synthesis)
condensation (dehydration synthesis)
hydrogen bonding
(c) Condensation or dehydration synthesis is the process of producing polymers from monomers.
The majority of macromolecules are created by fusing together tiny molecules known as monomers. These are the single-unit molecules that unite to form polymers; the term literally means "single unit" (because "mono" implies "one"). Polymers are simply chains of monomers, to put it simply. Given that meaning of "poly" is "many," this makes logical.
Both monomers and polymers have the ability to combine to form larger structures known as polymers. Our bodies experience particular reactions as a result of this.
While the process of hydrolysis divides polymers into monomers, dehydration processes are those that join monomers together to produce polymers.
The correct option is (c) condensation( dehydration synthesis).
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The complete question is mentioned below:
The creation of polymers from monomers is known as
(a) hydrolysis
(b) ionic bonding
(c) condensation (dehydration synthesis)
(d) hydrogen bonding
3. List two common everyday examples of the water cycle.
Answer:
Rain and snow soak into the earth and drain into rivers and streams, and fill our reservoirs. Water on the ground also evaporates, turning back into water vapor, to rise in the air and form more clouds. Here's another one: Boiling(evaporation) and ice(freezing)
Explanation:
are slime molds autotrophic or heterotrophic?
Answer:
heterotrophs
Explanation:
Like plants, slime molds have cellulose in the cell walls of their spores. Unlike plants, slime molds are heterotrophs!
When a cell is placed in a hypertonic solution, the cell may shrink. If the cell decreases in size, its ability to eliminate wastes by diffusion would
A. decrease because the solution would prevent materials from leaving the cell
B. decrease because the cell would now have less waste needing to be disposed of
C. increase because the surface-area-to-volume ratio of the cell would increase
D. increase because water and wastes would be drawn out of the cell into the solution
When a cell is placed in a hypertonic solution, the cell may shrink. If the cell decreases in size, its ability to eliminate wastes by diffusion would increase because the surface-area-to-volume ratio of the cell would increase.
What is meant by the hypertonic solution?The solution which contains more amount of solute than the solution is called a hypertonic solution. If the solution contains less amount of solute then the surrounding is called a hypotonic solution.
If the solution contains the same amount of solute then the surrounding it is called an isotonic solution.
If the cell is placed in hypertonic solution then cell will shrink because solutes and water tend to flow along their gradients. Surface area to volume ratio of the determine the size of the cell. When a cell grows in size its volume is higher than the surface area.
Therefore, When a cell is placed in a hypertonic solution, the cell may shrink. If the cell decreases in size, its ability to eliminate wastes by diffusion would increase because the surface-area-to-volume ratio of the cell would increase.
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Can the surface-area-to-volume ration be indicative of the importance of a cell's dimensions and the ability to properly diffuse material into the cell?
Runoff is most like which of the following? a) a puff of steam b) a flowing stream c) a cloud in the sky d) an invisible form of water
Answer:
a flowing stream
Explanation:
Velocity is...
The change of an objects mass
The change of an object's position
The change of an object's position over a period of time
The change of an object's speed
Answer: is C or D I think
the speed of something in a given direction.
"the velocities of the emitted particles"
Explanation:
Hope this helps!
Hi can someone help me with this. So I kind of struggling here because I tried multiple answers for both and it still says that its wrong. And Im not really sure on what to put here...
Any logical answers?
1. Redi tested the hypothesis by conducting the meat-jar experiment.
2. His conclusion would be that maggots do not come from meat.
Testing hypothesesHypotheses are tentative statements that are yet to be tested whether they are true or not.
In science, hypotheses are tested using well-designed experiments.
The belief that living things can come from non-living objects is known as spontaneous generation. It was a widely held belief for a long time until experiments are performed to prove otherwise.
Francesco Redi was able to test the hypothesis by conducting the meat-jar experiment. Many believe that maggots spontaneously come from meats.
By observing flies laying eggs on the meat in the uncovered jar, the notion that meats spontaneously give rise to maggots was totally dispelled. The eggs hatch to give rise to maggots.
Redi's conclusion would be that flies give birth to maggots through their eggs. Meats do not spontaneously give rise to maggots.
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If you have an experiment where you are testing whether or not plants grow more with miracle grow, what is the dependent variable?
1. type of plants
2. miracle grow
3. amount of growth
4. water, sunlight, nutrients
Suppose you want to investigate whether the type of music
students listen to while studying can affect their test
scores.
Which statement represents a valid hypothesis about music and studying?
OA. If you listen to calming music while you study, then you are more
likely to feel calm during the test.
B. Does the type of music played while studying affect test
performance?
C. Students who listen to music with faster beats while studying
perform better on tests.
D. Most people prefer pop or jazz music when studying for a test.
Answer: C because it is a testable hypothesis. For instance you could only listen to one genre for a term and another for the next term and then compare your scores.
Explanation: A is incorrect because you can not test a feeling like how calm you are.
Nerve cells can form many branches. How does this relate to their function?
A) they need a shape that allows them to hook onto structures
B) they need a large surface area
C) they form networks with other nerve cells
An electrically excitable cell known as a nerve cell uses synapses, which are specialized connections, to communicate with other cells. With the exception of sponges and placozoa, the neuron is the primary element of nervous tissue in all animals.
Plants and fungus are examples of non-animals that lack nerve cells. Dendrites are the many, brief branching found on nerve cells. Depending on the sort of cell it is affiliated with, dendrites may branch extensively. The axon of another nerve sends electrical signals to dendrites. The cell body or a portion of it is then where it accumulates before transmission. The quantity, branching, and placement of the dendrites or projections that make up a nerve cell, collectively known as arborization, determine the structure of the nerve cell. Their ability to communicate with their environment and other nerve cells or neurons, as well as their responsibilities in computation, are determined by this.
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How do molecules like O2, CO2, and small hydrophobic molecules cross cell membranes?
Answer: Simple Diffusion Across the Cell (Plasma) Membrane
Explanation:
pretty much the structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
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Which of these is a true null hypothesis
Here, a true null hypothesis is option B. Age has no effect on math ability.
According to the null hypothesis, the two variables under investigation have no relationship (one variable does not affect the other).A null hypothesis is a statement that is believed to be true in statistics unless it can be proven false beyond a reasonable doubt. The rationale behind this is that the null hypothesis typically believes that the population contains no novel or unexpected information.The null hypothesis and alternative hypothesis are significant because they roughly describe the phenomenon, which is their goal. The intention is to offer a relational statement that will be directly tested in a research study to the researcher or investigator.Hence, option B is the correct answer.
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What
happens to the fat
you "burn off"
during exercise?
How does food
make us gain
weight?
Answer:
by working out and it expands out stomach
Explanation:
three properties of water and for each property, identify and define the property and explain it in terms of the physical/chemical nature of water?
Physical water characteristics include the temperature, color, flavors, and odor of the water sample. Water's chemical properties include parameters such as pH and dissolved oxygen.
What are physical and chemical properties?When a substance undergoes a chemical change, its chemical properties can be observed or measured. Physical properties are those that can be observed without causing a chemical reaction.
Water's physical properties, namely color, temperature, turbidity, taste, and odor, are related to its appearance.
Even though water molecules are polar, they can establish hydrogen bonds. Water has distinctive properties as a result, such as a relatively high boiling point, a high specific heat, cohesion, adhesion, and density.
Thus, these are some of the properties of water.
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What amount of fertilizer in the soil produces the tallest flower
The independent variable is the amount of fertilizer, the dependent variable is the height of the flower, and the controlled variable might be the level of water.
What is the independent variable?The independent variable is those variable that doesn't change in the experiment, the dependent variable is modified by the independent variable and the controlled variable is the same for all treatments.
In conclusion, the independent variable is the amount of fertilizer, the dependent variable is the height of the flower, and the controlled variable might be the level of water.
Complete question:
Find the independent variable, dependent variable, and controlled variable in the experiment: What amount of fertilizer in the soil produces the tallest flower.
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Rank Smallest to biggest atom, molecule, proton, atomic nucleus, electron, neutron, cellular nucleus, cell
The correct order from smallest to biggest size is as follows:
electron < proton = neutron < atomic nucleus < atom < molecule < cellular nucleus < cell
Electrons are the smallest in size with a -1 charge orbiting around the nucleus of an atom which consist of protons and neutrons. Protons and neutrons are approximately similar in size and mass which is greater than that of an electron. Electrons, protons and neutrons are the three fundamental sub-atomic particles. Then comes atomic nucleus which is made up of protons and neutrons followed by an atom which is the most basic unit of matter. Molecules are made up of atoms. When at least two atoms are bound together by one or more chemical bonds, a molecule is formed. Macromolecules, or huge molecules that are created through polymerization like DNA, are a common type of biologically significant molecule. In cells, DNA is contained inside the nucleus. Organelles are collections of macromolecules seen in some cells that are encased in membranes like chloroplasts and mitochondria. Cell organelles along with the cell nucleus and cytoplasm make up a cell, which is the largest in size in the given example.
Thus, the correct order (from smallest to biggest size) is electron < proton = neutron < atomic nucleus < atom < molecule < cellular nucleus < cell
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How do hydrophilic heads and hydrophobic tails of phospholipid molecules result in a plasma membrane? (help is needed ASAP. Thank you)
Answer:
Phospholipids, arranged in a bilayer, make up the basic fabric of the plasma membrane.
Explanation:
Answer:
Hey there, I'm not an expert but I think I can help you out!
Explanation:
Following the rule of "like dissolves like", the hydrophilic head of the phospholipid molecule dissolves readily in water. The long fatty acid chains of a phospholipid are nonpolar, and thus avoid water because of their insolubility. In water, phospholipids spontaneously form a double layer called a lipid bilayer, in which the hydrophobic tails of phospholipid molecules are sandwiched between two layers of hydrophilic heads (see figure below). In this way, only the heads of the molecules are exposed to the water, while the hydrophobic tails interact only with each other.Need help with this. Think it’s false.
Answer: it is false
Explanation:
you got this
Where is Earth's older, denser, and thicker crust located on the seafloor?
A. the furthest away from the center of mid-ocean ridges
B. near the center of mid-ocean ridges
C. near continents
D. the bottom of ocean trenches
The Earth's older, denser, and thicker crust located on the seafloor is the the furthest away from the center of mid-ocean ridges and is denoted as option A.
What is Earth crust?
This is referred to as the outermost layer of the terrestrial planet and consists of young and old ones depending on their location from the mid-ocean ridges.
The Earth's older, denser, and thicker crust located on the seafloor is the the furthest away from the center of mid-ocean ridges and is located around subduction zones and continental shelves while the young and less dense crust are closer which is therefore the reason why option A was chosen as the correct choice.
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Why do oxygen (O2) molecules move into the cell and carbon dioxide (CO2) molecules move out of the cell on the ciliated side ?
Large area of land characterized by the plant and animal communities that live there
OBiosphere
OBiome
OEcolystem
OPopulation