________ are used for cutting DNA molecules into fragments
A) Antisense RNAs
B) Mutagens
C) DNA polymerase and DNA ligase
D) Restriction enzymes
E) RNA polymerases
D
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Animals that sexually reproduce are ________ and produce __________ gametes
A. haploid; diploid B. diploid; haploid C. diploid; diploid D. haploid; haploid
Members of the lineage ____ are found primarily in marine environments. Called bristle worms, they
characteristically have parapodia.
a. Hirudinea b. Polychaeta c. Monogenoidea d. Cestoda e. Oligochaeta
In what phase of the cell cycle does an actively dividing cell produce the proteins necessary for mitosis?
a. G1 b. S c. G2 d. prophase e. G1 and G2
The plasma membrane is a thin sheet of lipid embedded with
A. sodium and potassium ions. B. carbohydrates. C. nucleotides. D. polymers. E. proteins.