Parathyroid hormone acts to ensure that

A. potassium levels in the blood don't escalate.
B. calcium levels in the blood never drop too low.
C. sodium levels in urine are constant.
D. amounts of water in the blood are sufficient.


Answer: B

Biology & Microbiology

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Which of the following reactions is a hydrolysis reaction?  

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Biology & Microbiology

The malarial parasite, Plasmodium, is a member of the group 

A. Euglenozoa. B. Stramenopiles. C. Alveolata. D. Rhodophyta. E. Diplomonads.

Biology & Microbiology

Ethanol can be easily produced from:a

photosynthetic pigments. b. crystalline cellulose. c. root systems of plants. d. plant sugars. e. all of these.

Biology & Microbiology

The process by which genetic material is exchanged between different species, such as an endosymbiont and its host, is:

A. vertical gene transfer B. horizontal gene transfer C. binary fission D. mutualism E. parasitism

Biology & Microbiology