Caffeine from the coffee plant is stored in
a. central vacuoles.
b. chloroplasts.
c. chromoplasts.
d. leucoplasts.
A
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Failure to recover a specific band in a gel made after PCR can be attributed to:
A. inappropriate annealing of primers to the DNA template. B. inappropriate design of gene specific primers. C. inappropriate numbers of cycles for amplification. D. None of the answer options are correct. E. All of the answer options are correct.
Which of the following statements concerning the relationship of energy expenditure to body size in animals is TRUE?
A. Large endotherms have higher mass-specific metabolic rates (O2/g tissue/hour) than small endotherms. B. Large ectotherms have lower mass-specific metabolic rates than small ectotherms. C. There is an inverse (i.e., negative) relationship between the TOTAL energy used by an animal and its body size. D. Only endotherms show an inverse relationship between specific metabolic rate and body size. E. Only ectotherms show an inverse relationship between specific metabolic rate and body size.
In what stage of the alternation of generations in flowering plants is a process that is analogous to the production of eggs by frogs carried out?
A. Gametophyte stage. B. Sporophyte stage. C. Embryogenic stage. D. Gametogentic stage.
The energy in chemical bonds is a type of ___________________ energy
Fill in the blank(s) with correct word