Rank these from smallest to largest
A) grain of rice Ans: B) HIV virus < E. coli bacteria< Human egg cell grain of rice
C) HIV virus < Human egg cell
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Nine of every ten cardiovascular patients also have ________
a. periodontal disease b. benign skin tumors c. kidney failure d. diabetes
The only endocrine gland whose secretory function is under direct control by sympathetic nerves is the
a. pancreas. b. thyroid. c. adrenal medulla. d. thymus. e. testis.
Interacting systems of molecules enclosed in compartments called __________ evolved 3.8 billion years ago in living organisms.
A) organs B) microspheres C) mitochondria D) cells E) brains
Which of the following channels would not be expected to generate a change in voltage by movement of its substrate across the membrane where it is found?
(a) an aquaporin (b) a sodium channel (c) a calcium channel (d) a proton channel