What are the final electron acceptors for the electron transport chains in the light reactions of photosynthesis and in cellular respiration?
a. O2 in both
b. CO2 in both
c. H2O in the light reactions and O2 in respiration.
d. P700 and NADP+ in respiration
e. NADP+ in the light reactions and O2 in respiration in the light reactions and NAD+ or FAD
Answer: e. NADP+ in the light reactions and O2 in respiration in the light reactions and NAD+ or FAD
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Which one of the following statements about horizontal gene transfer is false?
A. Horizontal gene transfer is also called lateral gene transfer. B. Horizontal gene transfer involves hitchhiking genes from other species. C. Horizontal gene transfer was common early in life, but is absent today. D. Gene swapping is evident in the human genome. E. The products of horizontal gene transfer often exist as transposons.
What is the most assured method of identifying
an individual?
a. full genome sequencing b. short tandem repeat analysis c. SNP-chip analysis d. DNA-DNA hybridization e. PCR amplification
Which of the following does NOT influence the pH
of extracellular fluids? a. respiration b. a high protein diet c. bicarbonate ions d. filtration by glomerulus e. phosphate and ammonia ions
The chromatids detach from one another during __________________.
A. anaphase B. metaphase C. interphase D. prophase E. telophase