Blood transports 

A. nutrients, respiratory gases, and waste products.
B. chemical messengers.
C. heat.
D. All answers are true.


D. All answers are true.

Biology & Microbiology

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GTP binding occurs on which subunit of a G protein?

A. the alpha subunit B. the beta subunit C. the gamma subunit D. GTP binds both beta and gamma.

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Two species of salamander have similar ranges, but one breeds from January to March, while the second one breeds from March to May. This is an example of

A. mechanical isolation. B. temporal isolation. C. habitat isolation. D. behavioral isolation. E. gametic isolation.

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In some G-protein-coupled-receptors, cyclic AMP (cAMP) acts as a(n)

1.first messenger. 2.second messenger. 3.effector. 4.protein kinase. 5.extracellular signal.

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Devil fish is a common name for

A. Sepia B. Loligo C. Octopus D. Teredo

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