The main function of the rough endoplasmic reticulum is the production of
A) mitochondria and proteins secreted by the cell.
B) hydrogen peroxide and steroid hormones secreted by the cell.
C) ribosomes and steroid hormones.
D) membrane and proteins secreted by the cell.
Answer: D
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Which of the following is not true of viroids?
A. Viroid RNA does not serve as mRNA nor does it direct the synthesis of mRNA. B. Viroids are small circular ssRNA molecules. C. Viroids have no protein capsids. D. Extracellular viroids have a lipid bilayer envelope.
Suppose Monet did NOT have a reduced ability to see over the years. What would his paintings have looked like?
a. They would have been less vibrant. b. They would have been less blue-green. c. They would not have had narrow brush strokes. d. They would not have consisted of bleeding colours.
Which molecule is often called the cell's energy currency?
A) adenosine triphosphate B) flavin adenine dinucleotide C) nicotinamide adenine dinucleotide D) nicotinamide adenine dinucleotide phosphate
Darwin noticed that many organisms seemed well suited to
A. Being preserved as fossils B. Providing humans with food C. Surviving in the environment in which they lived D. Swimming from South America to the Galápagos Island