In animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This disintegration does not occur in the cells of most protists and fungi. According to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants?

A) unicellular green algae
B) cyanobacteria
C) charophytes
D) red algae
E) multicellular green algae


Ans: C) charophytes

Biology & Microbiology

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The ____ cells are most sensitive to reduced O2 levels

a. heart b. kidney c. liver d. brain e. pancreatic

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A strictly fermentative bacterium produces energy

A) by glycolysis only. B) by aerobic respiration only. C) by fermentation or aerobic respiration. D) only in the absence of oxygen. E) only in the presence of oxygen.

Biology & Microbiology

Which of the following are examples of pyrimidines?

A. uracil and adenine B. cytosine and guanine C. thymine and adenine D. thymine and guanine E. cytosine and thymine

Biology & Microbiology

Because the same microbes are not always present on food from harvest to harvest, (fresh/natural/starter) cultures are used in the production of alcoholic beverages.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology