Which latitude will have the most hours of daylight on the summer solstice?
a. 0º (the equator)
b. 30º north
c. 45º north
d. 60º north
D
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Macrophage cells undergo a process called phagocytosis in which material is brought into a cell in the form of membrane vesicles and then transported along microtubules toward the cell center. Assuming that the centrosome is near the cell center you can predict that these vesicles are moving to the ________ end of microtubules using the motor protein _________.
A. minus end; kinesin B. plus end; kinesin C. minus end; dynein D. plus end; dynein
You are studying with a classmate who asks you about the concept of a replacement rate. She wants to know what happens to a population if the replacement rate is reached? She also assumes the average human replacement rate is 2.0. What would you tell her?
A. When replacement rate is reached, the population declines. The replacement rate is greater than 2.0 to make up for declining birth rates. B. When replacement rate is reached, the population increases. The replacement rate is lower than 2.0 to make up for increasing birth rates. C. When replacement rate is reached, the population is in equilibrium. The replacement rate is equal to 2.0 to replace both mother and father. D. When replacement rate is reached, the population is in equilibrium. The replacement rate is greater than 2.0 because some individuals die before they reproduce. E. When replacement rate is reached, the population declines. The replacement rate is lower than 2.0 to make up for increasing birth rates.
Members of this subphylum are now all extinct, but they were extremely numerous in shallow
Paleozoic seas. Most of them were dorsoventrally flattened and heavily armored, with two deep longitudinal grooves that gave their body a three-lobed appearance.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
What is the genotype of a person with type O blood?
A. IAIA B. ii C. IAi D. IAIB E. IBi