Which of the following is not an important biogeochemical cycle on Earth?
A. phosphorus cycle
B. iron cycle
C. nitrogen cycle
D. water cycle
E. carbon cycle
B. iron cycle
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A student clones a DNA insert into the SalI site of pBR322 . Select all answers that describe the media on which she could expect growth of E. coli containing the recombinant plasmid
A. nutrient agar with ampicillin B. nutrient agar with tetracyline C. nutrient agar with ampicillin and tetracycline D. nutrient agar with streptomycin E. nutrient agar with no antibiotics
Answer the following statements true (T) or false (F)
1. Tuberculosis and Hansen disease (leprosy) are caused by Mycoplasma spp. 2. It is possible for scarlet fever and toxic shock syndrome to be caused by the same pathogen. 3. The most common cause of gas gangrene also causes a type of food poisoning. 4. The most common cause of gas gangrene also causes a type of food poisoning. 5. Botulism, gas gangrene, and tetanus are all caused by Clostridium spp.
Four of the five answers listed below are functions of the nephrons in the kidney. Select the exception
a. filtration b. dilution c. excretion d. reabsorption e. secretion
If you compared two samples of DNA at three different locations in the genome and found they had different lengths of short tandem repeats at each location, what could you conclude?
A) The two samples came from the same individual. B) The two samples came from females. C) The two samples came from males. D) The two samples came from different individuals.