At minimum, a virus, be it bacteriophage or otherwise, needs the following in order to survive and take over its host:

a. Nucleic acid and protein capsid
b. None of the answers are correct
c. Nucleic acid and envelope
d. Envelope and protein capsid
e. Protein capsid and envelope


Answer: a. Nucleic acid and protein capsid

Biology & Microbiology

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Which of the following statements about plant macronutrients is/are true? Check all that apply.  

_____  They approach or exceed 1% of a healthy plant's dry weight. _____  They reduce the need for CO2 during photosynthesis. _____  A deficiency in any one can have severe effects on a plant's growth. _____  They can have important implications for human nutrition. _____  The ability of the plants to take up minerals is affected by soil pH.

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Which group of genes in Drosophila embryos must be mutated if the result is elimination of a significantly sized, contiguous region of segmentation?

What will be an ideal response?

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The growth process that allows cells to become specialized to carry out specific functions is:

a. cell division. b. cell elongation. c. cell differentiation. d. primary growth. e. secondary growth.

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Which step in protein synthesis involves the formation of messenger RNA from a strand of DNA?

a. termination b. elongation c. translation d. transcription

Biology & Microbiology