A hormone that will be secreted from a cell is manufactured by ribosomes ________
A) attached to the endoplasmic reticulum
B) attached to the Golgi apparatus
C) attached to the plasma membrane
D) inside the nucleus
A
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Examine Figure 41.1. As water flows into the region with high solute concentration, it exerts an opposing force called ____ pressure, which eventually prevents additional water from moving into the compartment, bringing the system into equilibrium
Fill in the blank with the appropriate word.
Two different species are crossed and the second generation (F2) illustrates reduced fitness. This is an example of
____.
a. behavioral isolation b. gametic isolation c. hybrid breakdown d. crossing over e. hybrid sterility
When sperm enter the epididymis, they ________
A) are mature B) are incapable of moving on their own C) are ready to fertilize an egg D) come from the vas deferens
Which of these organisms is able to use several body surfaces, such as gills, skin, and lungs, for respiration?
A. amphibians B. humans C. birds D. reptiles E. None of these are correct.