This type of forest is disappearing fastest
A) kelp B) maple C) tropical D) great oaks
Answer: C
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Recall from the text the example of cell communication in Streptococcus pneumoniae: the rate of DNA uptake by pneumococcal cells increases sharply when they are at high density due to changes in gene expression brought about by signaling between cells
If the pneumococcal cells did not express receptor protein, how would the rate of DNA uptake be affected when the cells reach high density? A. There would be no change in the rate of DNA uptake. B. There would be a larger than normal increase in the rate of DNA uptake. C. There would be a smaller than normal increase in the rate of DNA uptake. D. There would be a decrease in the rate of DNA uptake.
The smallest certifiable living organism is a
A. bacterium called Mycoplasma. B. virus. C. nanobe. D. protozoan called Giardia. E. All of the answer choices are correct.
Humans, chimpanzees, and bonobos are both
A. primates and Homo sapiens. B. Homo sapiens. C. primates. D. hominids. E. primates and hominids.
Cells of the pancreas will incorporate radioactively labeled amino acids into proteins. This "tagging" of newly synthesized proteins enables a researcher to track their location. In this case, we are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway?
a) ER -> lysosomes -> vesicles that fuse with plasma membrane b) Golgi -> ER -> lysosomes c) ER -> Golgi -> vesicles that fuse with plasma membrane d) ER -> Golgi -> nucleus e) nucleus -> ER -> Golgi