Which of the following movements is not based on actin-myosin interactions?

a. Cell migration (crawling) over surfaces
b. Chromosome movement during anaphase A
c. Cytokinesis of animal cells
d. Phagocytosis
e. None of the above


Answer: b. Chromosome movement during anaphase A

Biology & Microbiology

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Microbes that are found in hot springs or other extreme environments are most likely to be ____

a. Gram-negative b. Gram-positive c. archaeans d. cyanobacteria e. proteobacteria

Biology & Microbiology

The movement of both oxygen and carbon

dioxide in the body is accomplished by a. exocytosis and endocytosis. b. facilitated diffusion. c. osmosis. d. simple diffusion. e. active transport

Biology & Microbiology

Reverse transcriptase catalyzes the production of _____ from ____

a. double-stranded cDNA; single-stranded mRNA b. double-stranded mRNA; single-stranded cDNA c. single-stranded cDNA; single-stranded mRNA d. single-stranded mRNA; single-stranded cDNA e. double-stranded cDNA; double-stranded mRNA

Biology & Microbiology

In the case of Mendel's peas, a single gene determined the height of the plant; however, in humans, adult height is influenced by many genes. A trait such as human height is said to be

a) codominant b) polygenic c) multi-allelic d) incompletely dominant e) pleiotropic

Biology & Microbiology