Answer the following questions true (T) or false (F)
1. Plants perform only photosynthesis, not cellular respiration.
2. Most plant leaves appear green because they absorb green light.
3. Photosynthesis forms ATP using oxidation-reduction reactions similar to those seen in the electron transport chain of respiration.
1. FALSE
2. FALSE
3. TRUE
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Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for two generations. The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)?
A. one light and one half-heavy band B. one half-heavy (intermediate to heavy and light) band C. one heavy band D. one heavy and one half-heavy band E. one light band
In the Hardy-Weinberg equation, p and q are _____.
A. genotypes B. mutation rates C. phenotypes D. allele frequencies E. measures of fitness
People at greatest risk for pneumococcal infections include all the following except
A. those with underlying lung disease and viral infections. B. adolescents and young adults. C. patients without a spleen. D. young infants. E. the elderly.
The best contraceptive device to prevent the spread of sexually transmitted diseases is the
A. condom. B. diaphragm. C. IUD. D. contraceptive pill.