The upper chamber on each side of the heart is the ventricle.

a. true
b. false


Answer: b. false

Biology & Microbiology

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The cnidarians have an incomplete gut (having only one opening) called the:

a. nematocyst. b. coelom. c. gastrovascular cavity. d. pseudointestine. e. spongeocoel.

Biology & Microbiology

What animal group is mismatched with its circulation system type (open or closed)?  

A.  earthworm—closed B.  lobster—open C.  killer whale—closed D.  cricket—closed E.  oyster—open

Biology & Microbiology

Regarding the growth curve, a bacteria is more sensitive to penicillin during the ______ phase

a. stationary b. lag c. exponential (Log) d. stationary and log

Biology & Microbiology

Which of the structures in Figure 48-1 represents the nitrogenous waste urea?


a. 1
b. 2
c. 3
d. 4
e. 5

Biology & Microbiology