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sveta [45]
2 years ago
11

Help a girl out please thanks:))

Biology
2 answers:
earnstyle [38]2 years ago
6 0

Answer: to me its either a or c!

but i mostly feel like its c!

Explanation:

hope i helped, sorry if i got this answer wrong!

irga5000 [103]2 years ago
5 0
I think it’s A because animal cells do not contain cytoplasm
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An enzyme contains a catalytic histidine residue in its active site that must release an R group proton to solution in order to
hjlf

Options missing:

a) The pH of the environment should be relatively high.

b) The pH of the environment should be relatively low.

c) The pH of the environment would not matter.

d) The environment should be set to the biochemical standard state.

Answer:

a) The pH of the environment should be relatively high.

Explanation:

For optimal function an enzyme needs a certain environment or condition. As temperature increases, the rate of enzyme activity also increases. As temperature increases toward its optimum point of 37 degrees Celsius (98.6 F), hydrogen bonds relax and make it easier for the hydrogen peroxide molecules to bind to the catalase.

The part of the enzyme where this reaction takes place is called the active site. A temperature that is higher or lower than this optimum point changes the shape of the active site and stops the enzyme from working. This process is called denaturation.

Enzyme pH levels also change the shape of the active site and affect the rate of enzyme activity. Each enzyme has its own optimal range of pH in which it works most effectively. In humans, catalase works only between pH 7 and pH 11. If the pH level is lower than 7 or higher than 11, the enzyme becomes denaturated and loses its structure. The liver sustains a neutral pH of about 7, which creates the best environment for catalase and other enzymes.

General acid catalysis would require histidine to be protonated at pH values (pH 8.0) optimal for enzymatic activity which is relatively high.

3 0
3 years ago
According to one hypothesis, life on earth emerged from (bluegreen algae/ amino acids/ molten metals/ crustal rocks) in the pres
Yuri [45]
1) The answer is <span>bluegreen algae
</span>
Bluegreen algae or cyanobacteria <span>are thought to have started life on earth because they converted the atmosphere that didn't have a lot of oxygen, into an atosphere with enough oxygen to exist life. That </span>oxygen was a product of their photosynthesis.

2) The answer is lightning.
<span>By Primordial Soup Theory, life began as a result of the combination of chemicals from the atmosphere and lighning (a form of energy) to make amino acids. Aminoacids are necessary to build proteins, and proteins are necessary for all the organisms.</span>
6 0
3 years ago
Read 2 more answers
Which two processes allow water to enter the atmosphere?
Anna11 [10]

Answer:

Evaporation and Transpiration

Explanation:

Evaporation is the process in which water from bodies of water vaporizes and enters the atmosphere while transpiration is the process in which water from plants evaporates into the atmosphere.

6 0
2 years ago
Why the walls of atrium are thin? <br><br><br>only about atrium thinner not than ventricles plz​
Basile [38]

This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.

5 0
2 years ago
Read 2 more answers
Which of the following is a term used to describe the deep and flat portions of the ocean on either side of a mid-ocean ridge? A
Black_prince [1.1K]
Seamount and guyot are types of mountain - so we can reject those options, since we're looking for a flat surface, not a mountain.

A trench is a narrow ditch, or  depression so also it's not a plain

The correct answer is abyssal plain - it's a plain typically next to a continental rise (leading to the continent) and a mid-ocean ridge.
4 0
3 years ago
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