Which of the following would be an external parasite? 

A. a bird that aids large mammals by eating parasites in the skin of the large mammal
B. a fungus living on the dead remains of a tree
C. a cowbird that lays its eggs in the nest of another species of bird
D. a flea that lives among the feathers and feeds on the blood of a bird


D. a flea that lives among the feathers and feeds on the blood of a bird

Biology & Microbiology

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The endosymbiosis that formed mitochondria likely occurred after eukaryotes developed photosynthetic capabilities

Indicate whether the statement is true or false.

Biology & Microbiology

Unlike the leading strand, ______________ are made in replicating the lagging strand of DNA.

A. primers B. nucleases C. Okazaki fragments D. pyrophosphates E. DNA polymerases

Biology & Microbiology

Which of the following group is most closely related to mammals?

A. Reptiles B. Amphibians C. Lancelets D. Cartilaginous fishes

Biology & Microbiology

A situation in which the birth rate equals the death rate is called:

a. an intrinsic limiting factor b. exponential growth c. saturation d. zero population growth e. geometric growth

Biology & Microbiology