Which tissue assists in absorption and secretion, and in the movement of materials?
a. A
b. B
c. C
ANSWER: b
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When many genes of an organisms are globally regulated, those genes are considered as regulon genes. What is the common theme of such genetic regulation?
A) Genes of regulons are silenced by a common repressor. B) Genes of regulons are able to transcribe mRNA independent of regulation. C) Genes of regulons are much more stable than non-regulon genes. D) Genes of regulons are much less stable than non-regulon genes. E) Individual genes of regulons are regulated independently of each other.
True or False: The size of a population of frogs is severely below the K that that environment can support. This is likely the result of frog parasites and/or predators
A. true B. false
Soil nutrients that are leached from soils into ponds or other bodies of water can contribute to such phenomena as:
A. overproduction of water plants that could block waterways B. excess growth of certain algae C. loss of those nutrients for plant growth D. reduced fertility of the soils E. All of these could be true
A group that contains species from separate evolutionary lineages is considered ____
a. paraphyletic b. polyphyletic c. monophyletic d. haplophyletic e. multiphyletic