All vertebrates have an __________ system of

secretory glands and cells. Fill in the blank(s) with the appropriate word(s).


Answer: endocrine

Biology & Microbiology

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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.

Biology & Microbiology

The term substrate is synonymous to the term ____

a. enzyme b. end product c. reactant d. intermediate e. active site

Biology & Microbiology

The double helix of DNA is composed of building blocks called

amino acids. monosaccharides. phospholipids. disaccharides. nucleotides

Biology & Microbiology

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

Biology & Microbiology