partial or full credit receive Multiple Choice- 1 point each 1. Which statement

Question

partial or full credit receive Multiple Choice- 1 point each 1. Which statement describes the chromosomal content of a typical prokaryote? a. Two copies of a single double-stranded, circular DNA molecule. b. One copy of a single double-stranded, circular RNA molecule. c. One copy of a single double-stranded, circular DNA molecule. d. One copy of multiple double-stranded, linear DNA molecules. 2. Independent virus particles (virion) a. contain nucleic acids b. do not carry out metabolism c. do not contain ribosomes d. a, b, and c are all true e. only b and e are true 3. Viruses that infect bacteria are called a. retroviruses b. transposons c. prions d. bacteriophage 4. Viruses may be as small as a. 0.02 nm b. 0.02 mm c. 0.02 pum d. 0.02 inches 5. The virus that posed the largest health threat to human beings, in terms of number of people that died in the 20th century, is a. HIVb. rhabdovirus c. orthomyxovirus d. Ebola virus

Explanation / Answer

1. c. one copy of a double stranded circular DNA molecule.

Gene is the physical unit of heredity that transmits information from one cell to another and thereby one generation to another. DNA (deoxyribonucleic acid) is a double helical structure; it contains the organism’s genetic information in the genes which lie along the structure of DNA. Prokaryotic genetic material is a double stranded circular DNA molecule.

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