In a given strand of DNA, complementary

bases are connected to each other by



a. ionic bonds.
b. polar covalent bonds.
c. hydrogen bonds.
d. peptide bonds.
e. nonpolar covalent bonds.


C

Biology & Microbiology

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T or F: a lever amplifies the force of movement

What will be an ideal response?

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Angiosperms that originated as hybrids resulting from a cross between two closely related species are known as ____

a. paleopolyploids b. autopolyploids c. allopolyploids d. hexapolyploids e. tetrapolyploids

Biology & Microbiology

Duplicated chromosomes linked together at

their centromeres at the beginning of meiosis are appropriately called what kind of chromatids? a. mother b. daughter c. sister d. homologous e. haploid

Biology & Microbiology

The assumption that there was little free oxygen in

the earth’s first atmosphere is supported by evidence derived from the study of a. ancient iron-containing rocks. b. the ancient atmosphere. c. oceanic sediments. d. moon rocks that formed at the same time as the earth. e. none of these.

Biology & Microbiology