Some anaerobic bacteria not only use organic compounds as a carbon source but can also use them for energy as well
Indicate whether the statement is true or false.
Answer: TRUE
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Why do researchers think the first self-replicating molecule was RNA?
A) RNA is the only type of molecule that can catalyze a chemical reaction. B) RNA can carry information and catalyze chemical reactions. C) Self-replicating molecules of RNA exist today, in human cells. D) Fossil evidence of such a molecule was recently discovered.
A restriction enzyme is most comparable to a ___________
A. screwdriver D. fork B. hammer E. ruler C. pair of scissors
In the experiment in which Frye and Edidin fused the plasma membranes of a mouse and a human cell, what happened
to the membrane proteins? a. They formed a bilayer. b. They formed a spherical structure. c. They moved laterally across the cell surface. d. They flip-flopped from one layer to the other. e. They reacted with cholesterol molecules on the membrane surface.
Carbon dioxide is split to form oxygen gas and carbon compounds _____
A) during photosynthesis B) during respiration C) during photosynthesis and respiration D) in neither photosynthesis nor respiration