A substance that diffuses across a cell membrane tends to move _______.
a) toward the area where it is more concentrated
b) away from the area where it is less concentrated
c) none of the choices is correct
d) away from the area where it is more concentrated
Ans: d) away from the area where it is more concentrated
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If a woman has blood type O and a man has blood type AB, what is the probability that they will have a child with
blood type O?
a. 0 b. 1/16 c. 1/4 d. 1/2 e. 3/4
Which are recycling centers for the cell?
A. ribosome and Golgi apparatus B. endoplasmic reticulum and chloroplast C. mitochondria and nucleus D. central vacuole and lysosome E. All of the answer choices are correct.
Most carbohydrates manufactured in leaves and other photosynthetic parts are transported through the phloem to the rest of the plant by the process of
A. receptor-mediated transport. B. turgor pressure. C. transpiration. D. osmosis. E. translocation.
The functions of the nasal conchae are to enhance the air turbulence in the cavity and to increase the mucosal surface area exposed to air for greater efficiency.
Indicate whether the statement is true or false