Which organism would be least likely to be able to survive rapid global climate change?
A. A self-compatible plant species (can use its own pollen to produce viable seeds) with wind-dispersed seeds and a fast growth rate
B. An omnivorous, endothermic animal species with a short generation time
C. An insect species that lays its eggs and feeds upon a single plant species with a short flowering period
D. A crustacean that tolerates a wide range of temperatures and can reproduce sexually or asexually
C. An insect species that lays its eggs and feeds upon a single plant species with a short flowering period
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Why is nonhomologous end joining (NHEJ) more frequent in eukaryotes?
A. Bacteria replicate frequently and so can use recombination repair to repair most double-strand breaks. B. The period of time between DNA synthesis events is longer so double-strand breaks occurring outside of the period require NHEJ. C. NHEJ is a mutagenic process that is tolerated better in larger genomes. D. Some eukaryotic cell types use NHEJ as a source of gene variation. E. All of the choices given are correct.
If a person has six fingers, her genotype is _____
a. ff b. Ff c. FF d. Ff or FF
Sensory adaptation ____
a. increases one's sensitivity tochangesin environmental stimuli b. increases one's sensitivity to constant stimuli c. is primarily associated with pain receptors d. functions the same way in all types of sensory receptors e. is unique to predator animals
In most cases, protein kinases ____
a. add phosphate groups to proteins b. bind cGMP c. stimulate adenylyl cyclase d. polymerize amino acids e. hydrolyze proteins