Prokaryotic cells are smaller than eukaryotic cells. What is a plausible explanation?
A. Prokaryotic cell walls limit their cell growth.
B. Prokaryotes lack the genetic material needed for protein synthesis.
C. Eukaryotes have compartmentalization, which allows for specialization.
D. Prokaryotes have more diverse energy sources.
E. Eukaryotes are immobile allowing them to grow larger.
C
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The amount of solar energy that any spot on the
surface of the earth receives is affected by a. the particulate matter and pollution in the air b. the angle at which the sun strikes the earth. c. the amount of atmosphere above the spot. d. all of these e. none of these.
An individual who has an XXY combination of sex chromosomes is said to have
A) Klinefelter syndrome. B) Turner syndrome. C) Down syndrome. D) Fragile X syndrome. E) cri du chat syndrome.
In an experiment with amphibian embryos, cells from a blastomere that was divided in two developed normally under which condition?
A. When they contained at least half of the gray crescent B. Only when cells did not have the gray crescent C. Only when cells received the full amount of gray crescent D. When cells were cleaved bilaterally E. When cells were cleaved radially
If a certain water-soluble, intravenous antibiotic is not succeeding in defeating the germs inside the central nervous system, the ________ may be preventing the antibiotic from reaching the brain
Fill in the blank(s) with correct word