Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction?

Biology

2 answers:

Nady [450]2 years ago

5 0

It is unchanged and can be used again for the same chemical reaction.

is the answer

Naya [18.7K]2 years ago

3 0

Answer:

It is unchanged and can be used again for the same chemical reaction.

Explanation:

Enzymes are bio-catalysts which speed up the rate of chemical reactions by <u>lowering the activation energy</u> for the reaction and <u>producing binding energy</u>. But during chemical reaction the enzymes are unchanged and can be reused for the same chemical reaction. Most of the enzymes are proteins and without enzymes a biochemical reaction cannot take place.

For example: Amylase catalyzes the conversion of starch into sugar.

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One of the grand challenges in biology is understanding how the first cells formed on Earth. Since all cells are bound by a cell

coldgirl [10]

<h2>Answer is option "A"</h2>

Explanation:

Oils and fats, which in science are called lipids, are known as amphipathic molecules. These molecules have two distinct ends to them: a water-loving (hydrophilic) side and a water-fearing (hydrophobic) side. While the hydrophilic sides of a lipid will associate with the water in a solution, the hydrophobic sides of the lipid all cluster together to 'hide' from the water. Lipids therefore cluster together and form spheres where the hydrophobic sides are in the center away from the water while the hydrophilic sides are on the outside, associating with the water.
The ability of the atoms within a group to form hydrogen bonds with the water molecules around them makes them hydrophilic. Oxygen and nitrogen atoms readily form hydrogen bonds with water molecules, so any organic molecules that have oxygen or nitrogen atoms bound to their carbon skeletons will be hydrophilic.
For example, if we take the molecule for cholesterol, we see the OH group on the left is hydrophilic and will form hydrogen bonds with water, while the ring structures, which only consist of hydrogen and carbon atoms, are hydrophobic and will not associate with the water.
There are many different kinds of lipids with different functions. Lets start by examining phospholipids, which compose the cell membranes of animals. They form lipid bilayers, with one set of hydrophilic heads facing the exterior of the cell membrane and the other set facing the interior (as you can see on the diagram on screen). The hydrophobic portions of the lipid bilayer - the lipid tails - face towards one another, which allows them to hide away from the water inside and outside of the cell.
So,the right answer is option A "amphipathic molecules".

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3 years ago

What is another word for cytosol

snow_tiger [21]

Another word for cytosol is cytoplasm.

4 0

2 years ago

A) A man has two recessive alleles. What is his phenotype? (1 point)

diamong [38]

Answer:

His phenotype would be having dry earwax

Explanation:

8 0

1 year ago

Consider the Color locus. At this locus there are two alleles - red and green. The red allele is dominant to the green allele. I

Anuta_ua [19.1K]

Answer:

0.7

Explanation:

Using Hardy-Weinberg equation of genetic variation being constant when disturbing factors such has mutation and others are removed.

p² + pq + q² = 1 and p + q = 1

where p² is the frequency of the homozygous dominant genotype (RR) and q² is the frequency of the homozygous recessive genotype (rr) and 2pq is the frequency of heterozygous genotype (Rr). p represent the frequency of "R" and q represent "g". since the coefficient against the green/green homozygote is 0.30 then

the fitness of the green/green homozygote = 1 - 0.3 = 0.7

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3 years ago

Dna is located in a non membrane bound region in a prokaryotic cell called the

Over [174]

This would be the nucleiod region.

8 0

2 years ago