Cholesterol is a necessary component of the plasma membrane of all animal cells.
Answer the following statement true (T) or false (F)
True
Cholesterol is a necessary component of the plasma membrane of all animal cells. It plays a role in membrane fluidity.
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Which pertains to DNA but not to RNA?
A. Contains adenine B. Contains uracil C. Contains nucleotides D. Contains thymine E. Contains ribose
An unhealthy diet can lead to obesity in individuals which can result in cardiovascular disease and type 2 diabetes.
Answer the following statement true (T) or false (F)
During the Snowball Earth temperatures at the equator rarely exceeded -20 degrees Celsius. Why didn't heat from the sun melt the ice?
A. The ozone layer absorbed all the heat. B. Ice reflected most of radiant energy. C. The earth's core was cooled and kept the ice frozen. D. The high levels of atmospheric moisture created extensive cloud cover.
Many species of field mice are able to reproduce several times a year and produce litters with multiple offspring. However, an ecologist noted that the population size of mice, as measured in a California grassland, did not change from year to year
The factors that keep natural populations from increasing are collectively called A) scramble competition. B) nonliving factors. C) exponential growth. D) biotic potential. E) environmental resistance.