The main difference between cell wall and cell membrane is, cell membrane is present in all cells but cell wall is only present in plants, bacteria, fungi and algae. ... Cell wall covers the cell membrane and forms the outer covering. Cell membrane is partially permeable but cell wall is completely permeable.
- What is the function of ATP in living things?*
a. ATP helps in protein folding
b. DNA is stored in the ATP
C. ATP is used to capture, store and transfer energy
d. ATP helps maintain the structure of the cell membrane
Answer:
C - Capturing, storing, and transferring energy.
Explanation:
ATP is used by cells to store and transport chemical energy. The cells then use this energy to drive cellular functions.
what happens if the pressure in an angler fish habitat decreases
Certain environmental changes can denature proteins. Denatured proteins lose their three dimensional structure and when the protein is an enzyme, they lose their ability to function. pH is just one factor that can change the effectiveness of an enzyme. What other factor might the students test regarding catalase specificity?
A) Students could test various other enzymes to see if all enzymes were denatured in a basic environment (pH = 13).
B) After determining the optimum pH, they could vary the temperature of the environment to see if catalase is temperature specific.
C) After determining the optimum pH, the students could vary the amount of catalase used while keeping the amount of substrate constant.
D) Students could test an assortment of food items besides liver, raw potato, apple, crackers, to see if catalase is consistently pH specific.
B) After determining the optimum pH, they could vary the temperature of the environment to see if catalase is temperature specific
Enzymes are proteins which catalyze reactions by acting on substrates in order to speed up reactions- like the breakdown of large polysaccharides by amylase. Here, the enzyme catalase facilitates the breakdown of hydrogen peroxide into oxygen and hydrogen. Catalase specificity is affected by pH, temperature and the presence of inhibitors.
In temperatures beyond its optimal range, catalase may undergo changes to its physical structure called denaturation; when denatured, enzymes lose their ability to bind specifically to their substrate -i.e. substrate binding specificity is lost. H2O2 would no longer be able to bind to the active site, and thus would not be broken down.
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Answer:
B
Explination:
After determining the optimum pH, they could vary the temperature of the environment to see if catalase is temperature specific. Proteins can be denatured through exposure to heat, changes in pH, or chemicals. Students could vary the temperature of the liver, even boil it, to see if enzyme action continued.
what part of the hand is unique to primates and humans
Answer:
Opposable thumbs!
Explanation:
Humans and primates are the only species that can touch their thumb to their other four fingers.
Answer:
The Thumb
Explanation:
The Thumb is the most important part on the hand. you cant really do much without your thumbs.
All of the following occur during the Krebs cycle EXCEPT:
I. Acetyl-CoA combines with oxaloacetate to form citrate.
II. FADH2 accepts two electrons to form FAD.
III. NAD+ is reduced to form NADH.
IV. Pyruvate is converted into acetyl-CoA
V. Carbon dioxide, NADH, and FADH2, and ATP are reactants.
Answer:
B
Explanation:
just answered on USAtestprep
The processes 'FADH2 accepts two electrons to form FAD', 'Pyruvate is converted into acetyl-CoA' and 'Carbon dioxide, NADH, and FADH2, and ATP are reactants' do NOT OCCUR during the Krebs cycle.
Cellular respiration has three stages: glycolysis, the Krebs cycle (i.e., the citric acid cycle) and oxidative phosphorylation.During glycolysis, pyruvate is converted into acetyl-CoA by an enzyme called pyruvate dehydrogenase.The Krebs cycle is a group of reactions that produce CO2, ATP, and reduced forms of NADH and FADH2, thereby these molecules are products instead of reactants.During the oxidative phosphorylation, the flow of electrons from FADH2 and NADH to O2 via a series of protein complexes is coupled to the generation of an electrochemical proton gradient, which is subsequently used to generate ATP.In conclusion, the processes 'FADH2 accepts two electrons to form FAD', 'Pyruvate is converted into acetyl-CoA' and 'Carbon dioxide, NADH, and FADH2, and ATP are reactants' do NOT OCCUR during the Krebs cycle.
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. Where is calcium carbonate found and how does it acts as a natural pH buffer?
Calcium carbonate:
The calcium carbonate is found in sea shells and the bones of sea creatures. And it is settled on layer of ocean. The pH level can be equilibrium with atmospheric [tex]CO_2[/tex]. There is constant concentration of [tex]CO_2[/tex] in the water.
The limestone and calcium carbonate is present in the rocks, streams, lakes is helps to maintain the constant pH in the minerals present in the rock react with excess acid in the water.
When the acids or bases react with the calcium carbonate ,there is the excess change in the pH. The mixture of calcium carbonate ions in the water to prevent the damage in acid rain.
Calcium carbonate is found in different forms and has various applications. It acts as a natural pH buffer in the human body by reacting with acids and bases to maintain the pH within a narrow range.
Explanation:Calcium carbonate is found in various forms and has multiple applications. In nature, it can be found in the form of limestone, chalk, and marble. It is also commonly used as an antacid to neutralize stomach acid and as an agricultural lime to correct acidic soil.
Calcium carbonate acts as a natural pH buffer due to its ability to react with acids and bases. In the human body, it is involved in the carbonic acid/carbonate buffering system, which helps regulate blood pH. When too much acid or base enters the body, calcium carbonate reacts to maintain the pH within a narrow range by either releasing carbon dioxide or combining with hydrogen ions or hydroxide ions.
A line graph has a vertical axis labeled "Average plant mass (g)^ * and a horizontal axis labeled "Herbicide (g/plant)." What information is conveyed by a point plotted with the coordinates (3, 10) ? Keep in mind coordinates are written as (x-coordinate , y-coordinate).
A. The range average plant mass was from 3 g to 10 g.
B. The average mass of plants exposed to 10 g of herbicide was 3 g.
C. The range of herbicide was from 3 g per plant to 10 g per plant.
D. The average mass of plants exposed to 3 g of herbicide was 10g
Answer:
The correct option is D. The average mass of plants exposed to 3 g of herbicide was 10g.
Explanation:
As the vertical axis is labelled as average plant mass, it will make the y- coordinate.
As the horizontal axis is labelled as Herbicide (g/plant), it will make the x-axis.
The coordinates for the given value are (3,10). 3 will be the value of the x- coordinate. Hence, it will show the average mass of the plant at the plotted point which will be 3 g.
10 will show the value of the y- coordinate which will be the amount of herbicide given to the plant.
Hence, Dis the correct option.
The information is conveyed by a point plotted with the coordinates (3, 10) is The average mass of plants exposed to 10 g of herbicide was 3 g.
The correct answer is: B.
The coordinates (3, 10) on the graph correspond to the point where the x-coordinate (horizontal axis) represents the amount of herbicide (3 g per plant), and the y-coordinate (vertical axis) represents the average plant mass (10 g).
This means that the data point (3, 10) indicates that when plants were exposed to 3 g of herbicide per plant, the average mass of those plants was 10 g.Therefore, the correct interpretation is that the average mass of plants exposed to 10 g of herbicide was 3 g, which aligns with option b.
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Which statement best describes how waves carry energy?
A wave transfers energy by causing the particles of a medium to be set into vibration.
What is a wave?A wave is a disturbance along a medium which transfers energy. We know that the particles that compose a medium tend to vibrate when a wave is in motion.
Hence, a wave transfers energy by causing the particles of a medium to be set into vibration.
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Drought and water shortage: what’s at stake? What can we do?
Answer:
with a drought lots of crops can die of no water source this causes the economy to loose money from this therefore the economy suffers aswell with water shortage it takes away for the crops and from things with animals
An individual’s behavior characteristics, emotional expression, and intensity that is established from birth is known as __________.
A. Attachment
B. Temperament
C. Security
D. Contact comfort
An individual’s behavior characteristics, emotional expression, and intensity that is established from birth is known as temperament.
Answer:
Temperament-Edge 2020
Explanation:
Some scientists claim that humans are responsible for the increase of CO2 in the atmosphere. Evaluate which system the increased CO2 levels are likely to affect, and predict the effects of increasing atmospheric CO2 on natural and agricultural ecosystems.
Answer:
Smoke and fumes
Explanation:
Smoke and fumes contain carbon monoxide, carbon dioxide and carbon particles. These are produced from industries which burn coal and petroleum fuels and also from motor vehicles exhaust. Carbon dioxide prevents layers of warm air from escaping into the upper atmosphere causing greenhouse effect that leads to global warming. On a global scale, this may bring about melting of the polar ice caps thus raising the level of oceans hence flooding of lowland areas.
Describe three machines that humans have designed and explain how the mechanical advantage is used.
Answer:
A pulley
They are simple, yet powerful devices that can make small forces move large objects. It is designed to support movement and redirect tension.
The Screw
The screw help to hold things together,
such as pieces of wood or metal. screws
provide more strength and holding
power. They also form a tight seal.
They can also be removed fairly easily. Examples of screws included the grooves on a jar or soda bottle lids, the end of light
bulbs, water faucets and hoses, bottle caps, gas tank ,work screw and ect.
The Lever
Like other machines, a lever makes work easier by changing the force applied to the machine the distance over which the force is applied.
Three machines that humans have designed are screw, the lever, scissor.
what are the advantages of human designed machines?
Screws are the man made machine which is used to secure materials by digging in and wedging into a material, used for the development and building in all industries; it is commonly made up of carbon or stainless steel.
It is used to connect metals to other metals, and other electrical connection application, are designed for strength and high duty. Other type of screw called Sheet metal screws used to connect metal/rubber and vinyl/rubber combinations.
The Levers are the most useful machines are applied to do some work with minimal effort, it amplifies an input force to provide a greater output force. There are various types of levers depending upon the position of the fulcrum, the force and the weight.
Scissor is the simple and most popular machine used to lift with low lifting capacity and can be utilized in cleaning and maintaining exteriors, cutting clothes, papers etc.
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Before Daniel performed his experiment, he hypothesized, "If I raise the temperature of a cup of water, then it will be able to dissolve more sugar."
Which of the following results would support the hypothesis?
A.
The cup with the warmest water dissolved the largest amount of sugar.
B.
The cup with the coolest water dissolved the largest amount of sugar.
C.
None of these statements support the hypothesis.
D.
The cup with the warmest water dissolved the least amount of sugar.
Final answer:
The correct result to support the hypothesis that increasing temperature allows more sugar to dissolve is A. The cup with the warmest water dissolved the largest amount of sugar.
Explanation:
To support Daniel's hypothesis that increasing the temperature of water will allow it to dissolve more sugar, we need to find a result that shows a direct relationship between water temperature and the amount of sugar dissolved. Specifically, Daniel hypothesized that higher temperatures would lead to greater solubility of sugar in water. With this in mind, the correct result that would support his hypothesis would be: A. The cup with the warmest water dissolved the largest amount of sugar. This is because solubility often does increase with temperature. To further illustrate, when you dissolve sugar in hot water, it tends to dissolve more rapidly than in cold water due to the increased kinetic energy of the molecules resulting in more effective collisions between the sugar molecules and the water, thereby aiding in the dissolving process.
It is also relevant to note that solubility curves typically illustrate this relationship between solubility and temperature, indicating how different substances dissolve at varying rates depending on the temperature. In addition, while agitation of the solution can affect the rate of dissolution, it does not affect the maximum amount of solute that can be dissolved, which is determined by temperature and the nature of the substances involved.
beets are red. what color is being reflected from the beets?
Answer:
Red because that's the color we see.
Answer:
The red color seen in beeturia is caused by the presence of unmetabolized betalain pigments.
Explanation:
The red color seen in beeturia is caused by the presence of unmetabolized betalain pigments such as betanin in beetroot passed through the body. The pigments are absorbed in the colon.
A bat's wing and a moth's wing are ________ structures
a homologous b. analogous c. vestigial d. adaptive
Answer:
A
Explanation:
Which of the following monomers would be used to make the double helix of a DNA molecule?
DNA is the genetic material of a cell. It is known as deoxyribonucleic acid. It is made up of phosphate moiety, a deoxyribose sugar, and a nitrogenous base. Thus, the correct option is A.
What is DNA?DNA stands for Deoxyribonucleic acid. It is the genetic material of the cell. The DNA is made up of nucleotides, which is the monomeric unit of DNA. The nucleotides are composed of a deoxyribose sugar (5-membered sugar), a nitrogenous base (purine or pyrimidine), and a phosphate moiety.
The nucleotides polymerize to form DNA molecules, the DNA molecules wraps around the histone proteins (basic proteins) present in the nucleus to form nucleosomes in the nucleus which contains all the hereditary information of an organism.
Therefore, the correct option is A.
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one a feature of the structure of all DNA Molecules is the
Answer:
The structure of the DNA is ideal for the complex function that it plays.
Some of the features of the structure of all DNA molecules are:
Sugar- phosphate backbone:
The sugar- phosphate backbone is ideal for providing the DNA a ladder- like shape which is essential for its functions.
Hydrogen bonds:
The hydrogen bonds present in the nucleotides keep both the DNA strands intact. If the hydrogen bonds were not present then the double helix would not have been able to form.
Coiling:
The structure of the DNA is coiled and super coiled so that it can fit into an organism.
Which of the following will NOT filter from the blood into the capsular space of the
renal corpuscle in a healthy nephron?
O Vitamins
o Water
O Amino acids
O Red blood cell
Urea
Answer:
amino acids is the answer
How could a plant spread its seeds? A An animal could eat fruit and spread the seeds. B A seed could get tangled in animal fur and be carried to a new place. C Seeds could float away in the wind. D all of the above
Answer:
The answer is All of the above
Explanation:
Answer:A
Explanation:
Based on the cladogram, if moths undergo complete metamorphosis, we would MOST LIKELY infer that
A) butterflies and flies do as well.
B) all the insects undergo complete metamorphosis.
C) no other insects undergo complete metamorphosis.
D) only butterflies also undergo complete metamorphosis
Answer:
The correct answer is A) "butterflies and flies do as well".
Explanation:
Cladograms are graphic representations of the evolutionary relationships of species, where the branches and the closeness of the species represent the degree of similarity. In this case, the "butterflies, moths" and the "flies" are the ones closest to each other. Therefore, these species are the most similar and if moths under complete metamorphosis, we would most likely infer that butterflies and flies do as well. I attached the missing cladogram.
who is cuche girl...........
Answer:
uhhhh..
Explanation:
During the time of normal cell activity, DNA exists in a loose, spaghetti-like form called __________.
a. centromere
b. chromosomes
c. histone
d. chromatin
Answer:
D
Explanation:
Answer:
d. chromatin
Explanation:
Chromatin is a complex of DNA, RNA, and proteins that is present in the eukaryotic cell nucleus in the form of a long, spaghetti-like filament. Histones are the main proteins that make up the chromatins.
Chromatin is usually divided into two categories according to their condition: eucromatin and heterochromatin.
Eucromatin: When the chromatin filaments are less condensed it means that it has active DNA, ie the cell is able to "read" the content of this genetic material. Heterochromatin: The filaments are condensed, coiled together in a tangle. In this case, the DNA is inactive because cells at that time are unable to encode the condensed genetic material.An uncircumcised, 78 year-old male has presented at the clinic complaining that he cannot retract his foreskin over his glans. On examination it is noted that the foreskin is very constricted. What is this condition called?
Answer:
Phimosis.
Explanation:
Phimosis may be defined as the medical condition in which the foreskin around the tips of penis cannot be retracted. This might occur due to scarring and can occur naturally.
The main symptoms of this disease is unable to retract the skin. The skin gets loose with time. The 78 year old man complains that his foreskin over the glans cannot be retracted over the glans. This symptoms is more or less related with the phimosis.
Thus, the correct answer is phimosis.
Answer:
phimosis
Explanation:
Which of these is an important function of salt marshes, such as the one on
the Cape Hatteras National Seashore in North Carolina?
Answer:
To provide food for migratory birds.
Explanation:
Answer:
Letter C is the correct answer.
Explanation:
Salt marshes are is a coastal ecosystem located in the upper coastal intertidal zone, between land and brackish water usually flooded by the tides. Salt marshes have an important role since they deliver food to different groups of animals.
8. When does a cell stop going through the Cell Cycle?
Answer:
If the checkpoint mechanisms detect problems with the DNA, the cell cycle is halted, and the cell attempts to either complete DNA replication or repair the damaged DNA. If the damage is irreparable, the cell may undergo apoptosis, or programmed cell death 2.
How are 2 and 3 the answer
Answer No 2:
The correct option is C.
Translation can be described as a process by which proteins are produced from mRNA. This is because ribosomes are the sites where the production of proteins takes place. The mRNA which is formed as a product of transcription is translated in ribosomes to form a specific protein. As the disease, dyskeratosis congenita, causes mutations in the ribosomes hence, the production of proteins is the process which will be disturbed due to it. Hence, option C is correct.
HELP!!! We are going to ask the question: How does moving the fulcrum point effect the distance a nickel can fly?
Balance the ruler so there is an equal length on both sides of the fulcrum (at the 6” mark).
Put a nickel at the one inch mark on the ruler. Record your observations in the data table.
Keep the nickel at the 1” mark. Drop a quarter on the end of the opposite end of the ruler from about 12 inches in height. Measure the distance from the end of the ruler to where the nickel lands. Record your results.
Repeat this 3 times.
Now move your fulcrum to the 9 inch mark and repeat steps 2-4.
Now more your fulcrum to the 12 inch mark and repeat steps 2-4. Which causes the nickel to fly farther? Which takes more force?
Answer:
more force needed would be fulcrum at 12 with nickle at 1 the one closest to the nickle would go the furthest
So, honestly, to figure out this experiment, it is better to use a tube or round pen instead of the triangular block (because it is easier to find and easier to balance)
Now then, you simply gotta do is place the nickel right at the 1" point on the ruler for each trial and you will drop the quarter from 12" for each trial.
After wasting a few hours getting the ruler to not rotate while I launched the coins, I got a few sample results (this was calculated from the start position of the nickel)
______________________________________
Middle Trials (6")
T1: moved right about 0.5"
T2: moved left 1" and backwards 0.5" (-0.5")
T3: moved right 2" and backwards 0.5" (-0.5")
______________________________________
9" trials
T1: Right about 1"
T2: Right 0.5"
T3: around 0.8" foward
______________________________________
12" trials were all at 0" in change
______________________________________
The 12" trial requires more force for movement while the 9" trial gave the most positive changes forwards
This part of the cell stores wastes, water or food.
In cells, the vacuole is the organelle in which different substances or solutions are stored, this includes wastes, water, food, and even solids that the cell does not require because they are waste and therefore might contaminate the cell or substances the cell store to be used later.
Answer: vacuole
Explanation:
Which kind of wave would be observed in outer space between planets, where there is very little matter?
O an electromagnetic wave, such as an X-ray
O an electromagnetic wave, such as a sound wave
a mechanical wave, such as an X-ray
O a mechanical wave, such as a sound wave
Answer:
A.) an electromagnetic wave, such as an X-ray
Answer:
I would say the answer is A)
Why is it necessary to fill a chamber with water and empty it in a cellular respiration lab? Is it because if not, the carbon dioxide levels change?
Answer:
Yes , it is necessary to fill a chamber with water and empty it in a cellular respiration lab
Explanation:
The chamber which is filled with water act as oxygen in the cellular reaction and gets emptied during the process due to production of carbon dioxide. The main ingredient for the cellular respiration is oxygen without it production of carbon dioxide is certainly not possible. So presence of water is an essential factor in cellular reaction. Through anaerobic respiration carbon dioxide can be produced but to a limited amount not like with oxygen.
It is necessary to fill a chamber with water and empty it in a cellular respiration lab.
Yes. If not, the carbon dioxide levels will change.
Explanation:
Cellular respiration is the energy deriving process in most eukaryotes. Oxygen is the main input of this process. In the process glucose reacts with oxygen and get converted to ATP which is the energy source of the cell.
Other products released in the process are carbon dioxide and water. The chemical equation of cellular respiration is [tex]C_6 H_12 O_6+6O_2 \rightarrow 6CO_2+ 6H_2 O+ATP[/tex].
In a cellular respiration lab the chamber filled with water acts as the source of oxygen which is essential for cellular respiration.
Since carbon dioxide is the byproduct and oxygen continuously gets used up in the process, it is necessary to empty the chamber .If not the carbon dioxide levels change. When all the oxygen in the water gets used up will be no more production of carbon dioxide.