0) The theory of spontaneous generation was refuted by the work of a. Louis Past

Question

0) The theory of spontaneous generation was refuted by the work of

a. Louis Pasteur. b. Robert Koch. c. Robert Hooke. d. Antoni van Leeuwenhoek.

1) A pure culture

a. is sterile.

b. is a population of identical cells.

c. is made of a clearly defined chemical medium.

d. contains one microbial cell.

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2) Microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of

a. carbon. b. nitrogen. c. sulfur. d. carbon, nitrogen, and sulfur.

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3) The structure that confers structural strength on the cell is known as the

a. cytoplasmic membrane. b. cell wall. c. ribosome. d. cytoplasm.

Explanation / Answer

0) The theory of spontaneous generation was refuted by the work of: a. Louis Pasteur
1) A pure culture: b. is a population of identical cells
2) Microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of: d. carbon, nitrogen, and sulfur
3) The structure that confers structural strength on the cell is known as the: b. cell wall

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