In 2006, what was the average amount of garbage generated per person per day in the United States?
a. 25.6 pounds
b. 10.5 pounds
c. 15.2 ounces
d. 4.6 pounds
e. 1.5 pounds
D
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Cellulose belongs to which of the following groups of macromolecules?
A) lipids B) carbohydrates C) proteins D) nucleic acids E) none of the above
The figure above depicts the result of an experiment to determine how DNA replication occurs. Based on these results, it
appears that after replication, each new DNA molecule contains ____.
a. either entirely old DNA strands or entirely new DNA strands b. one old DNA strand and one new DNA strand c. entirely new DNA d. some DNA helix regions from old DNA alternating with some DNA regions from new DNA e. two strands that are each a mix of old and new DNA
Which does NOT occur in the light-independent reactions?
A. The 6-carbon molecule immediately divides into two 3-carbon molecules of glyceraldehyde-3-phosphate. B. Hydrogens from NADPH are transferred to molecules in the Calvin cycle. C. The 5-carbon ribulose is regenerated. D. ADP and NAD+ are returned to the light-dependent reactions.
Which of the following statements best describes DNA polymerase?
A. It is an enzyme that catalyzes the addition of nucleotides to the 3? end of a growing DNA strand. B. It is an enzyme that polymerizes the DNA and keeps the replication fork open. C. It is an enzyme required to produce a primer needed for DNA replication. D. It is an enzyme that catalyzes the addition of nucleotides to the 5? end of a growing DNA strand. E. It is an enzyme required to glue pieces of DNA fragments together.