A culture system with constant environmental conditions maintained through continual provision of nutrient and removal of wastes is called ________ culture system.
A. semicontinuous
B. fed-batch
C. continuous
D. batch
Answer: C
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Bacterial symbionts most often provide marine invertebrates with
A) fixed nitrogen in the form of ammonia. B) essential amino acids missing from the animal's diet. C) cellulolytic enzymes to help digest plant material. D) fixed carbon dioxide in the form of organic compounds.
Which organic molecule is a carbohydrate monomer?
a. triglyceride b. fatty acids c. nucleotide d. amino acid e. monosaccharide
Baroreceptors are located in the
a. coronary arteries. b. cardiac veins. c. pulmonary arteries. d. carotid arteries. e. pulmonary veins.
The geographical distribution of organisms makes sense only in the context of:
a. natural selection. b. plate tectonics. c. continental drift. d. evolution. e. ecology.