A large increase in exercise (say hiking for 20 miles a day for a week) requires _______________.
a. an increase in oxygen delivery to the muscles
b. an increase in nutrient delivery to the muscles
c. an increase in ATP levels in the muscles
d. a and b are correct
e. a, b, and c are correct
Answer: d. a and b are correct
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Viruses are known to infect Bacteria, but no virus has yet been found that infects Archaea
Indicate whether the statement is true or false.
You expect to find the lowest overall blood pressure in
A. humans. B. sparrows. C. alligators. D. ostrich. E. salmon.
In the fall, leaves of most deciduous trees change color. This color change takes place when the chlorophyll in the cells breaks down and the other pigments become visible as the green color fades. What is the purpose of the other pigments within a plant cell?
A) The other pigments are waste products of cellular activities and are stored within the vacuoles of the cells. B) The other pigments assist in absorbing specific wavelengths of light for photosynthesis. C) The other pigments are used in the dark reaction of photosynthesis. D) The other pigments are for color only and assist in camouflage.
Which of the following can influence reproductive success?
A. how long the individual lives B. how frequently it mates C. the genetic makeup of the mate D. how many offspring it produces per mating E. All of the choices are correct.