With ____, individual cells can be coaxed to divide and form embryos in a laboratory

a. in vitro fertilization
b. sexual reproduction
c. tissue culture propagation
d. vegetative reproduction
e. grafting


ANSWER: c

Biology & Microbiology

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Certain traits will have been lost from the gene pool forever. Some may be obvious, like people with red hair or double jointed thumbs. Others will be less obvious, like the ability to process cholesterol or being allergic to peanuts. This loss of diversity in a reduced population is called ________.

A) gene flow B) genetic drift C) bottleneck effect D) founder effect

Biology & Microbiology

The enzyme succinate dehydrogenase, located in the inner mitochondrial membrane, is directly involved in ____

a. glycolysis and pyruvate oxidation b. pyruvate oxidation and citric acid cycle c. citric acid cycle and electron transfer system d. electron transfer system and glycolysis e. electron transfer system and fermentation

Biology & Microbiology

The muscles of the body wall are derived mainly from which embryonic cell layer in most

eumetazoans?

a. mesoderm b. epiderm c. mesoglea d. endoderm e. ectoderm

Biology & Microbiology

Circulation in the accompanying diagram functions primarily as a(n) ____

a. an open circulatory system b. system consisting of mostly of tissue spaces c. closed circulatory system d. interstitial fluid system e. three-directional system

Biology & Microbiology