The lungs have increased surface area to increase the movement of oxygen into the circulatory system.
a. true
b. false
Ans: a. true
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During HIV reproduction, spike glycoproteins
A. do not enter the cell with the virus. B. are released into the cytoplasm by cellular enzymes. C. are embedded in the infected cell membrane. D. are assembled into the virus along with reverse transcriptase. E. are embedded in the viral capsid.
The term [(K-N)/K] influences a population growth curve such that
a) when K is small, mortality rates are lowest b) the increase in actual population numbers is greatest when N is small c) when N equals K, population growth is zero d) as N approaches K, the birthdate approaches zero e) as N approaches K, a populations carrying capacity increases
How do sponges differ from all other animals?
A) Sponges exhibit radial symmetry. B) Sponges are autotrophs. C) Sponges lack a true body cavity. D) Sponges lack true tissues.
Which of the following would decrease body temperature?
a. dilation of cutaneous blood vessels b. shivering c. enhanced thyroxine release d. eating a large meal