Which of the following concepts best describes the wide variety of dog species we observe, ranging from the domesticated golden retriever or the basset hound, to the wild dogs of Africa, to foxes?
a. evolution
b. taxonomy
c. special creation
d. preadaptation
e. inheritance of acquired characteristics
A
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Which is not a cell or fiber type found in loose connective tissues?
A. Chondrocytes B. Macrophages C. Adipose cells D. Mast cells E. Collagen fibers
Humans who have mutations in the presenilin genes are at a higher risk for developing early-onset Alzheimer's disease
The human presenilin proteins that are made from these genes are responsible for altering other proteins by cleaving (cutting) them at specific positions. Presenilin proteins that are highly similar to the human ones have been identified in C. elegans, a microscopic nematode worm. These nematodes do not get Alzheimer's disease, as they do not have a brain. What would you expect the function of nematode presenilins to be? A) They are responsible for the development of the central nervous system. B) They are responsible for altering other proteins by cleaving them. C) They are responsible for transporting proteins to a new location within cells. D) They are responsible for the synthesis of new proteins.
Which of the following is not a component of DNA nucleotides?
A) arginine B) a phosphate group C) adenine D) guanine E) deoxyribose
Moss A produces gametes in May, and moss B produces gametes in June. This is an example of a/an ________ isolating mechanism
A) post-mating B) temporal C) behavioral D) geographic