Most biopolymers industrially produced by means of microorganisms are ________.

A. nucleic acids
B. polysaccharides
C. histones
D. cell wall constituents


Answer: B

Biology & Microbiology

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A. armadillos B. mice C. chickens D. foxes

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Compounds such as salt and calcium are __________

a. minerals b. vitamins c. micronutrients d. organic

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Food chains are an important part of an ecosystem. A food chain shows ___

a. which organisms are producers b. which organisms are consumers c. how much food each organism consumes d. a and b e. a and c

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The sinoatrial node consists of a form of this tissue.

A. nervous B. adipose C. muscular D. connective E. epithelial

Biology & Microbiology