You drive a nail into a tree that is 10 feet tall, and come back 10 years later. The tree is now 30 feet tall, but the nail is the same distance from the ground. This is because the tree grows up from
A. the apical meristem only.
B. the lateral meristem only.
C. both the lateral and apical meristems.
D. the root tip.
E. the node.
Answer: A. the apical meristem only.
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If the fluid inside of a cell has a 5% solute concentration, what would happen if the cell was placed in a solution with a 10% solute concentration?
A. Water molecules would leave the cell by osmosis. B. Water molecules would enter the cell by osmosis. C. Water molecules would cross the membrane in both directions, but there would be no net movement of water molecules. D. There would be no movement of water molecules in either direction. E. Solute molecules would leave the cell by osmosis.
Genetics is defined as the study of ____
A. diseases B. DNA C. heredity D. chromosome structure E. more than one of these
In homeostatic control, the ________ compensates for any deviation between the actual value and the set point. In body temperature regulation in mammals, this function is carried out by ________.
A. effector; brain B. effector; skeletal muscle C. sensor; neurons D. integrator; skeletal muscle E. integrator; brain
Which of the following is the largest genome sequenced to date?
A. Pan troglodytes (chimpanzee) B. Homo sapiens (human) C. Saccharomyces cerevisiae (brewer's yeast) D. Mus musculus (mouse) E. C. elegans