The lungs have increased surface area to increase the movement of oxygen into the circulatory system.

a. true
b. false


Ans: a. true

Biology & Microbiology

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During HIV reproduction, spike glycoproteins

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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

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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.

Biology & Microbiology

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

Biology & Microbiology