Annelids have _______, which are hair-like extensions anchored in their skin.

a. chaetae
b. parapodia
c. radula
d. nephridia


a. chaetae

Annelids have chaetae, which are hair-like extensions anchored in their skin.

Biology & Microbiology

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_____________ infects the CD4+ T cells, which are required for normal immunity.  

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

When the population size of a prey species increases, the birthrate of a predator species should also increase

Indicate whether the statement is true or false

Biology & Microbiology

Multiple Excitatory Postsynaptic Potentials (EPSPs) from temporal summation and spatial summation can result in:

A. an action potential. B. filtering out of unimportant background signals. C. adaptation. D. hyperpolarization.

Biology & Microbiology

Primary carnivores are

a. tertiary consumers in the third trophic level. b. secondary consumers in the third trophic level. c. secondary consumers in the second trophic level. d. tertiary consumers in the fourth trophic level. e. also primary producers.

Biology & Microbiology