All vertebrates have an __________ system of
secretory glands and cells. Fill in the blank(s) with the appropriate word(s).
Answer: endocrine
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Why do most replication errors occur?
a. DNA polymerases work very fast and mistakes are inevitable. b. DNA repair mechanisms do not work well. c. DNA replication is a slow and uncommon process. d. The hydrogen bonds between base pairs are weak. e. DNA ligase often binds incorrect sections of DNA.
The term substrate is synonymous to the term ____
a. enzyme b. end product c. reactant d. intermediate e. active site
The double helix of DNA is composed of building blocks called
amino acids. monosaccharides. phospholipids. disaccharides. nucleotides
Once duplicated, the chromosome and its copy remain attached as _____ until separated during mitosis.
A) histones B) nucleosomes C) sister chromatids D) centrosomes E) condensates