100. Which statement is wrong for viruses ? (1) Antibiotics have no effect on them (2) All are parasites (3) All of them have helical symmetry (4) They have ability to synthesize nucleic acids and proteins Answer : All of them have helical symmetry...
Nissl bodies are mainly composed of (1) Proteins and lipids (2) DNA and RNA (3) Nucleic acids and SER (4) Free ribosomes and RER Answer : (4) Free ribosomes and RER...
9 In some viruses DNA is synthesized by using RNA as a template. Such a DNA is called............ a. r-DNA b. C-DNA c. B- DNA d. A- DNA Answer : Ans. b C-DNA...
A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be a) All individuals ... Only 50% individuals would be hybrids d) All individuals would have DNA made up of 100% N14 Answer : b) All individuals will be hybrids...
The chemical component that is invariably found in all viruses is : (1) proteins (2) lipids (3) DNA (4) RNA Answer : proteins...
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