MMBIO 221 OLD Questions with Complete Solutions
Structural part of the cell wall of most bacteria. Composed of polysaccharide chains containing repeat units of N-acetylmuramic acid and N-acetylglucosamine, cross-linked by short chains of amino acids. Correct Answer-Peptidoglycan Found only in the outer membrane of gram-negative cells; lipid A is the active component; they are also called endotoxin. Correct Answer-Lipopolysacharides This gelatinous, sticky substance is usually composed of polysaccharides or proteins that surround the outside of a cell. Variations on this are also called capsules and slime layers. Correct Answer-Glycocalyx Unique poly-alcohols associated with the cell walls of gram-positive cells only; the name comes from the Greek word for wall. Correct Answer-Teichoic acids Glucose is transported into a cell by an active process and simultaneously modified into glucose-6-phosphate. This process is most correctly termed... Correct Answer-Group translocation Which two organelles are semiautonomous and are best explained by the endosymbiosis theory? Correct Answer-Mitochondria and chloroplasts If a red blood cell is placed into a hypotonic solution, the cell would most likely... Correct Answer-Fill wit
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- Subido en
- 19 de mayo de 2024
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- 2023/2024
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