Heart inflammation, or ________ , produces an irregular heart rhythm that leads to dizzy spells and other symptoms.
a. rheumatic fever
b. pericarditis
c. Borrelia burgdorferi
d. myocarditis
e. endocarditis
d. myocarditis
Biology & Microbiology
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Natural selection operates directly on
(a) the genotype. (b) individual alleles. (c) the phenotype. (d) color only.
Biology & Microbiology
During which phase of the cell cycle do chromosomes separate and move toward opposite poles?
a. prophase b. metaphase c. anaphase d. telophase
Biology & Microbiology
Hawthorn maggot flies that breed on native hawthorns or introduced European apples can mate in the lab, but rarely mate in the wild. This is an example of _____ reproductive isolation.
A. postzygotic B. prezygotic C. allopatric D. sympatric E. outgroup
Biology & Microbiology
Bacterial RNA polymerase binds to the ________
A) operator B) proto-oncogene C) regulatory gene D) promoter
Biology & Microbiology