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
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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.
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?
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.
Which step in protein synthesis involves the formation of messenger RNA from a strand of DNA?
a. termination b. elongation c. translation d. transcription