Which of the following is true?
a. RNA is usually single-stranded
b. DNA is usually single- stranded
c. DNA contains uracil
d. RNA contains thymine
Ans: a. RNA is usually single-stranded
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One type of polyploidy is ____
a. aneuploidy b. trisomy c. triploidy d. deletion
e. translocationYou find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery organism is most likely a plant and not an alga if it _____
A) contains chloroplasts B) is surrounded by a cuticle C) does not contain vascular tissue D) has cell walls that are comprised largely of cellulose
Which portion of DNA contains the genetic information "read" by the RNA polymerase and transmitted into mRNA?
A) sugar B) backbone C) phosphodiester bond D) base
Which of the following is a form of active transport?
A. Osmosis B. Facilitated diffusion C. Simple diffusion D. Sodium–potassium pump E. Glucose transporter