Which of the following is done by toads to avoid hot, dry periods of the year?
A) hibernation
B) torpor
C) diapause
D) estivation
D
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In the reactions of glycolysis, acetyl-CoA formation and the citric acid cycle, chemical energy is transferred to the bonds in:
A. ATP. B. electron carriers. C. fats. D. a and b are correct. E. a, b, and c are all correct.
Restriction enzymes:
A. are found in a wide variety of mammalian cell types. B. cleave invading bacterial DNA. C. always produce sticky ends. D. typically cleave at palindromic sequences 4–8 base pairs long. E. are necessary for joining two DNA fragments together.
A phylogenetic tree is a diagram that describes a phylogeny. A phylogeny is
A. the evolutionary history of a species or group of species. B. the geographic distribution of populations in a species. C. the generations of individuals in a population. D. the distribution of species in a given area in time. E. a list of character traits of individual species set in a tree diagram.
This image depicts the concept of
1.osmosis
2.diffusion
3.active transport
4.facilitated transport