Which of the following microorganisms is the most commonly used indicator organism for water quality testing?
A) Escherichia coli
B) Salmonella spp.
C) Shigella spp.
D) Campylobacter jejuni
E) Hepatitis A virus
A
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Which of the following is most TRUE about multicellular organisms when compared with unicellular organisms?
A. Multicellular organisms carry out specialized functions, while unicellular organisms do not. B. Multicellular organisms can reproduce themselves, while unicellular organisms cannot. C. Multicellular organisms can digest more complex molecules than unicellular organisms. D. Multicellular organisms tend to have larger genomes than unicellular organisms. E. Multicellular organisms show development while unicellular organisms do not.
An operon includes which of the following components?
a. multiple genes b. a promoter c. all of the choices d. one or more operators
Which gland is associated with seasonal
affective disorder (SAD)?
a. pineal b. pituitary c. thyroid d. parathyroid e. thymus
Which of the following would occur if excess sweating led to dehydration and high salt concentration in the bloodstream?
A. The hypothalamus would signal the kidneys to release more salt into the urine. B. The hypothalamus would signal the kidneys to absorb more salt from the urine. C. The liver would signal the kidneys to absorb more salt from the urine. D. The liver would signal the kidneys to release more salt from the urine. E. None of the answer choices is correct.