Honeybees and the flowers they feed on are called __________, which are composed of large,
complex cells with many specialized compartments.
a. prokaryotes
b. macromolecules
c. microbes
d. eukaryotes
D
You might also like to view...
The equation, 6CO2 + 6H2O ?C6H12O6 + 6O2, describes which of the following processes?
A. light reaction B. nitrogen fixation C. photosynthesis D. Calvin cycle E. aerobic respiration
Which of the following hormones does NOT promote growth of cells or tissues?
a. ADH b. growth hormone c. insulin-like growth factors d. thyroid hormones e. prolactin
Like most birds, what nonbird reptiles are highly vocal and engage in complex parental behavior?
a. crocodilians b. turtles c. lizards d. snakes e. amphibians
The level of carbon dioxide in the blood is monitored by nerve tissue. If you exercise strenuously, the increase in cellular respiration consumes oxygen from the blood and produces surplus carbon dioxide removed in the blood. Since this physical exertion requires faster breathing to replenish oxygen supplies and carry away carbon dioxide, the carbon dioxide sensors result in signals from the brain to increase breathing rate. After you have rested, and carbon dioxide levels are back to normal, your breathing rate decreases too. This is an example of
A. a positive feedback loop that stimulates a response opposite to the stimulus. B. a response to a sensory impulse that causes a muscle or gland to react. C. the dynamic interplay between events that tend to change the internal environment and events that tend to keep it the same. D. a negative feedback loop that stimulates a response similar to the stimulus. E. the dynamic interplay between events that tend to change the internal environment and events that tend to increase the changes.