During exhalation, the chest cavity ____ in size, which causes air pressure in the lungs to ____
a. increases; increase
b. decreases; decrease
c. increases; decrease
d. decreases; increase
e. expands; remain the same
ANSWER: d
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Which of the following statements about veins is false?
A. Veins located in the head, limbs, and lower body have one-way valves that help prevent blood from pooling due to gravity. B. The blood pressure within the veins is much lower than the blood pressure within the arteries. C. Veins have thinner walls than arteries. D. As much as 80% of the total blood volume resides in the venous circulation at any given time. E. None of the answer options is false.
When a plant has a hypersensitive response, production of ____ triggers effects such as the expression of PR proteins
a. oligosaccharins b. salicylic acid c. ethylene d. cytokinin e. brassinosteroids
Pollen is derived from mitosis and differentiation of ________
a. the endosperm mother cell b. megaspores c. the integuments d. microspores
When looking at plant and animal cells with an electron microscope, you notice that the plant cells have more Golgi membranes than the animal cells. This is most likely because unlike in animal cells, in plant cells the Golgi apparatus is involved in the production of:
A. chloroplasts. B. mitochondria. C. cytoplasm. D. cell walls.