Some RNA viruses direct the synthesis of double-stranded DNA at some point in their life cycle.
Answer the following statement true (T) or false (F)
True
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Archaeal cells are about ________ bacterial cells.
A. the same size as B. ten times smaller than C. ten times larger than
Dinoflagellates became photosynthetic via secondary endosymbiosis
Indicate whether the statement is true or false.
What inorganic precursors are needed to synthesize proteins?
A) carbon, water, and oxygen B) carbon, water, oxygen, and phosphate C) carbon, water, oxygen, nitrogen, and phosphate D) carbon, water, oxygen, nitrogen, and sulfur E) carbon, water, oxygen, sodium, and phosphate
The second messenger that causes calcium ion to be released from intracellular stores is
A. Diacylglycerol B. Adenylyl cyclase C. Inositol triphosphate D. Phospholipase A E. None of the choices are correct