Which of these statements about nucleosomes are correct?

a. The histones H2A, H2B, H3, and H4 make up the nucleosome octamer that binds DNA.
b. Most histones are small (less than 150 amino acid residues), basic proteins rich in Lys and Arg.
c. DNA binding to histones has the same effect as positive supercoiling.
d. Degradation of linker DNA yields DNA fragments of about 200 bp.
e. Partial enzymatic digestion of chromatin results in DNA fragments of about 103 bp.

the answer is a) a shiprock was formed by igneous process

c. movement because i took the test and it lets me review my answers

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.