Which part of the sperm contains the chromosomes?
A. flagella
B. tail
C. middle piece
D. cell membrane
E. head
Answer: E
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Mycobacterial infections in AIDS patients are mostly likely to be caused by ________.
A. Mycobacterium avium complex B. Mycobacterium africanum C. Mycobacterium bovis D. Mycobacterium tuberculosis
You have inherited some old glass baby milk bottles from your grandmother, and you would like to use them instead of plastic bottles. The bottles are placed into a large metal container and placed in the oven at 325°F for about 2 hours. What factor would you change if you wanted the sterilization to occur much quicker?
A. Increase the temperature of the oven by 5 degrees B. Use a pressure cooker to sterilize the bottles with steam C. Place the bottles outside in the sunlight and then place in the oven D. Pour an antimicrobial chemical into the bottles before placing into the oven
What happens during photorespiration?
A) The Calvin cycle produces twice as much glyceraldehyde 3-phosphate (G3P). B) The enzyme rubisco uses oxygen as its substrate for the reaction with ribulose bisphosphate. C) Ribulose bisphosphate (RuBP) is broken down into glycolate. D) A second wave of light reactions occurs to replace the Calvin cycle.
Which of the following is not a predicted outcome of climate change?
a. change in precipitation patterns b. inability of some organisms to adapt c. profound health effect on people in developing countries d. increased problems for agriculture e. global average sea level decreasing