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The following questions concern the limits of microbial growth. 19. An would be

ID: 256682 • Letter: T

Question

The following questions concern the limits of microbial growth. 19. An would be charact would be characterized by its ability to grow in environments. A. acidophile B. psychrophile C. halophile D. high temperature E. low pH 20. Which statement describes adaptations necessary for hyperthermophilic proteins to stay functional at temperatures above 80°C? The proteins contain increased disulfide bonds between sulfur-containing amino acids. A. B. The proteins contain unique amino acids not found in mesophilic proteins. C. The proteins contain increases ionic interactions between amino acids. D. The proteins contain peptide cross-links, similar to peptidoglycan. E. The proteins contain fewer hydrophobic amino acids compared to mesophilic proteins.

Explanation / Answer

Answers-

19. A. Acidophile & E. Low ph.

- Acidophile are the bacteria which grows in low ph sometimes about 2.0 or below that.

20. B. The protein contains unique amino acids not found in mesophilic protein.

The structure of both the protein are same approximately but the thermophillic protein share some extra H-bonds competitively.