Contemporary hypotheses concerned with the origin
of life focus on what two characteristics of living
systems?
a. energy conversion and biosynthesis
b. self-replication and energy conversion
c. plasma membranes and self-replication
d. growth and development
e. adaptation and responsiveness
Answer: c
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The word eukaryotic refers specifically to a cell containing
a. photosynthetic membranes. b. a true nucleus. c. a cell wall. d. none of the above.
The genotype for a pea plant that is homozygous recessive for both height and pea color would be:
a. tt. b. YY. c. TtYy. d. ttyy. e. TTYY
When substrate level phosphorylation occurs, it means what?
A. ATP is converted into ADP plus a phosphate group. B. NADH is converted into NAD + H. C. ADP is converted into ATP by addition of a phosphate group. D. NAD is converted into NADH. E. AMP is converted into NAD by adding a phosphate group.
Sea cucumbers have an Incomplete gut
a. true b. false