Cyanobacteria

A. are a form of algae.
B. are prokaryotes.
C. use hydrogen sulfide as an electron source.
D. are eukaryotes.


B

Biology & Microbiology

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Transgenic goats produce

a. human factor VIII. b. CFTR protein to treat cystic fibrosis. c. human antithrombin III. d. both a and b. e. both b and c.

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If one kind of plutonium isotope is not removed, the wastes from a nuclear power reactor must be kept

out of the environment for how many years before they are safe? a. 25 b. 250 c. 1000 d. 5000 e. 10,000 or more

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Horticulturists often use ________ and other growth regulators applied as a paste to plant cuttings to stimulate root formation.

A. ethylene B. abscisic acid C. auxin D. cytokinins

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A population pyramid:

a. reflects the number of individuals in various age groups in a population. b. predicts survival and mortality rates for an individual at a given age. c. directly predicts future age distributions of the population. d. shows the current birth and death rates of a population.

Biology & Microbiology