Answer:
All of the above
Explanation:
U 2 can help me by marking as brainliest.......
Answer:
A- A pH change can cause the enzyme to change its shape
Explanation:
A rise or fall in the pH of the medium from the optimum of pH 7 usually affect the enzymes' active sites of and therefore the shape and the rate of enzyme activity.
Assuming the pH is too low, the enzyme medium becomes acidic;Acidosis. The high Hydrogen ions concentration interacts with the R-groups of the amino acids moiety of the enzymes, this interaction affects the ionization of the R-groups, disrupting the ionic bonding holding these R-groups in shape.
This results in loss of the 3-Dimensional shape arrangements of the protein molecule and therefore of the active sites. Since active sites of enzymes determines the specificity of the <u>enzymes substrate- complex </u> to give <u>enzyme-product complex,</u> the catalytic activity of the enzymes decreases, <u>the rate of reaction decreases,and products formation stops, and the reaction also stops.</u>
The same is applicable to extremely high pH=Alkalosis.
However, the effective buffer system of the body prevents this scenarios from happening in real sense in the body. Through mopping by the haemoglobin, excretion by the kidney, etc
The nucleolus is the central support structure
The answer is 4. Mitochondria
Answer:
The sun is classified as a star.
Explanation:
The sun is a star at the center of the solar system.
The sun is important in the following ways:
- The sun's light has to be present for photosynthesis to occur thereby, it enables food production by plants.
- The sun lights up the earth through its light rays.
- It warms up the sea.
- It provides heat for heating up the earth leading to production of water vapor that rises to form clouds.
- The sun also provides vitamin D that is essential to living organisms health.
