Each DNA strand has a backbone that consists

of alternating
a. covalent and ionic bonds.
b. nitrogen-containing bases.
c. hydrogen bonds.
d. sugar and phosphate molecules.
e. covalent and hydrogen bonds.


D

Biology & Microbiology

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The process of cell division in a prokaryotic cell is called:

A. binary fusion. B. mitosis. C. binary fission. D. cytokinesis.

Biology & Microbiology

The main hypothesis about the origin of the first living organisms is called ________.

A. novel design B. biogenesis C. panspermia D. chemo-evolution

Biology & Microbiology

Where does the citric acid cycle take place?

What will be an ideal response?

Biology & Microbiology

Which of the following has the smallest size?

A neutron A molecule of glucose An atom of oxygen A cell

Biology & Microbiology