If blood is too acidic, bicarbonate ions enter the bloodstream via the
a. collecting ducts.
b. proximal tubules.
c. distal tubules.
d. peritubular capillaries.
e. Henle's loop.
D
Biology & Microbiology
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photosynthesis requires ___________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
What characteristic would the R groups of amino acids have if they are located within the interior of biological membranes?
A. The R groups would be hydrophilic. B. The R groups would be polar. C. The R groups would be able to form ionic bonds. D. The R groups would hydrophobic.
Biology & Microbiology
At present the human population is
A. in the death phase B. growing rapidly C. stable D. in the lag phase
Biology & Microbiology
What is a ribosome made of?
a. tRNA and rRNA b. tRNA, rRNA, and mRNA c. rRNA and proteins d. rRNA and mRNA
Biology & Microbiology