Which factor is a population-limiting, density-dependent factor?
A) a heavy flood that destroys a large area around a river
B) a heat wave in which some organisms can't survive
C) a drought that limits food availability
D) the rapid spread of tuberculosis in heavily populated areas
D
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How is DNA linked to the production of proteins?
A. Proteins hold the instructions on how to make DNA. B. DNA holds the instructions for the cells on how to make proteins. C. DNA is the end point of protein production that allows cells to finish making proteins. D. DNA is not linked to the production of proteins.
Polygynous species:
a) are usually sexually dimorphic, with males larger and more highly ornamented. b) are often asexual. c) are usually sexually monomorphic. d) are usually sexually dimorphic, with females larger and more highly ornamented. e) usually employ external fertilization.
Genome sequencing of the parasitic protist Plasmodium falciparum has been completed. One of the results is
A. Plasmodium is highly genetically similar to its host, Anopheles. B. Plasmodium has a chloroplast-like apicoplast that could be targeted by drugs. C. Plasmodium produces fatty acids that are similar to ones found in humans and could be targeted by drugs. D. Plasmodium is highly genetically similar to its host, Drosophila.
?
Figure 37.9A
The following question refers to the antibody structure figure above.
The variable region of a light chain, produced by the alternative gene splicing of many versions of gene segments, ____.
A. A B. B C. C D. D E. E