If an individual living in a northern climate has allergies in the late summer, it is most likely
due to
a. long-day plants.
b. short-day plants.
c. either short-day or long-day plants.
d. There is not enough information given to determine which type of plant is involved.
B
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According to the logistic growth equation, = rmaxN,
A) the number of individuals added per unit time is greatest when N is close to zero. B) the per capita growth rate (r) increases as N approaches K. C) population growth is zero when N equals K. D) the population grows exponentially when K is small. E) the birth rate (b) approaches zero as N approaches K.
The male reproductive whorl of a flower typically consists of one or more
a. petals. b. carpels. c. stamens. d. receptacles. e. sepals.
Saturated fats have long, straight tails of fatty acids, whereas unsaturated fats from vegetables have kinks in their tails due to double bonds. These kinks prevent the fats from packing together as tightly. Hydrogenated vegetable oils, or trans fats, have hydrogens added back to the double bonds and thus behave like
A. proteins. B. saturated fats. C. unsaturated fats. D. carbohydrates. E. waxes.
Where are most glucose transporter proteins ("GLUTs") located when levels of the hormone insulin are LOW?
A. inserted into the nuclear membrane B. inserted into the plasma membrane C. in the membranes of intracellular vesicles D. in the endoplasmic reticulum E. in the liver-they are transported to other cells when glucose levels rise.