Some biologists believe that the process of endosymbiosis was responsible for the evolution of
A. eukaryotic cells.
B. viruses.
C. prokaryotic cells.
D. fungi.
A. eukaryotic cells.
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A simple sugar is composed of equal parts carbon and water, which gave rise to the general name of any sugar as a ________.
Fill in the blank(s) with the appropriate word(s).
When do homologous chromosomes undergo recombination?
a. during anaphase b. during prophase c. during telophase d. during metaphase
A transport system that moves one solute into the cell and another one out of the cell during a single cycle accompanied by the expenditure of energy through ATP hydrolysis could be called a(n) _______
a) active uniport b) active antiport c) active symport d) passive symport e) passive antiport
Which option correctly describes the two strands of DNA in a double helix?
a. antiparallel in orientation b. parallel in orientation c. held together by covalent bonds between bases d. identical