4. In the body of a human, the types of chemical activities occurring withir
cells are most dependent on the: *
O
A) biological catalysts present
O
B) size of the cell
O
C) number of chromosomes in the cell
D) kind of sugar found on each chromosome

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this process is called "phosphorylation." a phosphate bond joins adenosine diphosphate to form adenosine triphosphate.

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.

her affection for her parents makes her an especially sympathetic character.