What is the relationship between photosynthesis and cellular respiration?
A. The reactants of photosynthesis are the products of cellular respiration and the reactants of cellular respiration are the products of photosynthesis.
B. Organisms conduct neither photosynthesis nor cellular respiration to produce food.
C. Organisms conduct either photosynthesis or cellular respiration to produce energy.
D. Photosynthesis is a step within cellular respiration.
E. Cellular respiration is a step within photosynthesis.
A. The reactants of photosynthesis are the products of cellular respiration and the reactants of cellular respiration are the products of photosynthesis.
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Which does a successful PCR require?
A) at least 100 starting DNA template molecules B) some sequence information about the region to be amplified C) a cloned cDNA of the region to be amplified D) a double-stranded DNA template of at least 100 kb to amplify E) an undamaged DNA template with intact chromosomes
How could telomerase inhibitors be used to treat cancer? What will be an ideal response?
The LD50 of Vibrio cholerae is 108 cells through the oral route. If the bacterial cells are ingested with bicarbonate, the LD50 drops to 104. Which of these explanations is the most likely?
A) Sodium bicarbonate decreases the virulence of Vibrio cholerae. B) Stomach acid decreases the virulence of Vibrio cholerae. C) Vibrio cholerae makes toxin only in the presence of stomach acid. D) Stomach acid increases the virulence of Vibrio cholerae. E) Sodium bicarbonate inactivates Vibrio cholerae.
Choose the true statement(s) about the evolutionary divergence of horses in North America. Check all that apply.A) Most changes are seen as adaptations for life in grassland habitats.B) The general trends during horse evolution are increase in body size, lengthening of limbs, reduction of digits on both sets of limbs, and tooth development for a grazing life style.C) Horse evolution is unusual in that rates of change were uniform and constant throughout most lineages.D) Living lineages of horses show much less diversity than existed in the past.
What will be an ideal response?