Chlorine
A. readily reacts with organics to produce potentially carcinogenic trihalomethanes.
B. is an effective, inexpensive, disinfectant able to destroy all types of microorganisms.
C. is unaffected by the presence of organic material.
D. is ineffective when diluted.
E. readily reacts with organics to produce potentially carcinogenic trihalomethanes AND is an effective, inexpensive, disinfectant able to destroy all types of microorganisms.
E
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Some types of dinoflagellates (single-cell eukaryotes) show a circadian rhythm. They produce light for about 12 hours in the dark (at night) and photosynthesize for about 12 hours in the light (during the day)
Say you took some dinoflagellates at the end of their 12 hours of darkness and put them on a 24-hour light cycle. How would the cells likely respond during the first day of that cycle? A. The cells would photosynthesize for the full 24 hours. B. The cells would photosynthesize for more than 12 hours but less than the full 24 hours. C. The cells would produce light for the full 24 hours. D. The cells would not produce light or photosynthesize.
What is the term when one species benefits from an indirect interaction and the other has a neutral effect?
A) indirect competition B) indirect mutualism C) mutualism D) indirect commensalism
Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of deafness. Deafness is a recessive trait that is associated with the abnormal allele d. The normal allele at this locus, associated with normal hearing, is D. Dr. Smith's
parents could have which of the following genotypes? A) DD and dd B) dd and dd C) Dd and Dd D) Dd and DD
What is lymph?
A) the layer of lipids that collects under the skin for protection and insulation B) thick carbohydrate matrix that supports cells in various tissues of the body C) the portion of blood that contains red blood cells D) protein-rich blood plasma that has left capillaries E) the portion of blood that contains white blood cells and platelets