1.) Most vitamins are often components of ___.
A.) enzymes
B.) coenzymes
C.) food
D.) energy molecules
2.) The function of an enzyme is to
A.) give energy to a reaction.
B.) act as a buffer in a reaction.
C.) increase the concentration of the substrate.
D.) speed up a reaction.
3.) Meiosis results in a change in chromosomal number as shown by
A.) 2n to 2n.
B.) 2n to n.
C.) n to 2n.
D.) n to n.
4.) The cell that is formed through fertilization is called a(n)
A.) gamete.
B.) sperm cell.
C.) egg cell.
D.) zygote.
E.) embryo.
5.) The first checkpoint in the cell cycle occurs at .
A.) G1
B.) S
C.) G2
D.) mitosis
6.) Normal human somatic (body) cell would have
chromosomes.
A.) 4
B.) 23
C.) 45
D.) 46
E.) 47
7.) In human, mitosis occurs in
A.) liver only.
B.) heart only.
C.) ovaries only.
D.) testes only.
E.) either ovaries or testes.
F.) all organs.
8.) Most enzymes are classified as
A.) carbohydates.
B.) proteins.
C.) lipids.
D.) nucleic acids.
E.) DNA.
9.) Entropy ofter is referred as
A.) ATP.
B.) usable energy.
C.) unusable energy.
D.) potential energy.
10.) An example of potential energy is
A.) muscle contraction.
B.) transporting molecules.
C.) rocks on a hill.
D.) rocks rolling down the hill.
11.) Which is part of enzyme?
A.) substrate
B.) product
C.) coenzyme
D.) active site
E.) reactant
it is either c or d and i know for sure it is not a or b
answered: Guest
answer: 20 percent
the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.
Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.