All human cells carry
a. one X and one Y chromosome
b. at least one X chromosome
c. at least one Y chromosome
d. a pair of X chromosomes
Ans: b. at least one X chromosome
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If the stimulus is large enough at the trigger zone, the membrane potential reaches ____, and an action potential begins
a. positive charge b. maximum voltage c. resting potential d. threshold potential e. minimum ionic concentration gradient
Which forms the outermost whorl of flower
parts? a. sepals b. petals c. anthers d. carpels e. stamens
What components make up the ribosome? Select all that apply?
A) protein B) carbohydrate C) RNA D) DNA
A growing root comes into contact with a chemical that inhibits the Golgi bodies. Which of the following would be a probable effect of this contact?
A. The root would begin to growing in an upward direction. B. The root cap cells would begin to divide rapidly. C. The root would begin to simultaneously grow in multiple directions. D. The root would not be slick enough to move through the soil easily. E. The root would produce too much mucigel and oxygen uptake would be inhibited.