F. F. Blackman performed experiments to investigate the effects of various factors on photosynthesis. In one of his experiments, Blackman found that if light intensity was low, photosynthesis could be accelerated by increasing the amount of light, but not by increasing the temperature or carbon dioxide concentration. What can you conclude from this specific experiment?
A. Photosynthesis generates oxygen.
B. Carbon dioxide is important for photosynthesis.
C. High temperatures are important for photosynthesis.
D. Light is important for photosynthesis.
Answer: D
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What process can lead to an individual having too many or two few chromosomes?
A. Nondisjunction B. Homologous recombination C. Crossing over D. Independent assortment
If chromosomal DNA from a host is the only type of DNA carried by a transducing particle, what can be concluded regarding transduction in this case?
A. Transduction in this case could be generalized or specialized depending on the phage involved. B. Transduction in this case is generalized rather than specialized. C. Transduction in this case is neither generalized nor specialized. D. Transduction in this case is specialized rather than generalized.
Select all correct descriptions of the hypothalamus.
A. consists of masses of gray matter deep within the cerebral hemispheres B. controls the pituitary gland C. regulates hunger, thirst, sleep, body temperature, and water balance D. integrating center that helps maintain homeostasis E. consists of two masses of gray matter located in the sides and roof of the third ventricle
All of the following are direct methods of measuring microbial growth except:
A. a Coulter counter. B. membrane filtration. C. viable plate counts. D. turbidity.