What factor or factors discovered with electron microscopy distinguished prokaryotic from eukaryotic cells?

a) their size
b) their color
c) the types of their internal structures or organelles
d) their fragility


Answer:
a) their size
c) the types of their internal structures or organelles

Biology & Microbiology

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The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA _____

A) is a six-carbon sugar and the sugar in RNA is a five-carbon sugar B) can form a double-stranded molecule C) is an aldehyde sugar and the sugar in RNA is a keto sugar D) is in the ? configuration and the sugar in RNA is in the ? configuration E) contains one less oxygen atom

Biology & Microbiology

Say Gus and Ida were released back into the wild in 2011, in an area that has a population of polar bears. You observe them for many years and they only breed with each other

Does this prove that they are members of a different species than the wild polar bears? A. yes B. no C. maybe

Biology & Microbiology

Cell cleavage during embryonic development in ducks is

A. meroblastic. B. holoblastic. C. complete. D. through the entire egg. E. impossible.

Biology & Microbiology

What material make up a cell membrane?

a. carbohydrates b. cellulose c. phospholipid

Biology & Microbiology