Question
QUESTION 13 Genetic change in bacteria can be brought about by Transduction. Mutation. Transformation. Conjugation. All...
QUESTION 13 Genetic change in bacteria can be brought about by Transduction. Mutation. Transformation. Conjugation. All of the above. ooo
QUESTION 14 All of the following pertain to glycolysis except occurs without oxygen. ends with formation of pyruvic acid. occurs during fermentation. degrades glucose to CO2 and H20. involves reduction of NAD.
QUESTION 15 Which of the following statements about viruses is false? Viruses contain a protein coat. Viruses have genes. Viruses contain DNA or RNA but never both. Viruses use their own catabolic enzymes. Viruses use the anabolic machinery of the cell.
QUESTION 16 In which of the following ways do viruses differ from bacteria? Viruses are not composed of cells. Viruses are obligate intracellular parasites. Viruses don't reproduce. Viruses don't have any nucleic acid. Viruses are filterable.
Answers
13. All the a bove.
Bacteria can under go mutation and bring genetic changes in them. They also can take up DNA from surroundings (transformation ) and bring genetic changes. Viruses can add genes and also conjugation also can bring genetic changes.
14. Degrades glucose in to CO2 and H2O.
Glycolysis produces Pyruvate , NADH, occurs in anaerobic respiration and also does not require O2.
15.Viruses use their own catabolic enzymes.
Viruses are surrounded by protein coat and have either RNA or DNA as the genetic material but never both. Viruses use the host cell machinery to make their own compounds. They have enzymes only to convert DNA in to RNA etc
16. Viruses are not composed of cells.
Viruses do not have any cell structure at all.
Viruses are minutest particles with protein coat and nucleic acid. They do not have any cytoplasm inside. That is why they do not have any cell structure as in bacteria. Some bacteria and all viruses are obligate parasites. All viruses and some bacteria are filterable. Vis=rus reproduces like bacteria and have genes like bacteria.
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