The part of the spirochete that houses the cytoplasm and the nucleoid of spirochetes is called the ________ cylinder.
A. protoplasmic
B. mesoplasmic
C. cytoplasmic
D. ectoplasmic
Answer: A
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Which of the following is a possible human genotype that could result from nondisjunction of the sex chromosomes in one of the parental gametes?
A. XXY B. XYY C. XXX D. XO E. All of the answer options are correct.
Human damage to Earth’s ecosystem and biodiversity will likely decrease the planet’s human:
a. age structure. b. agricultural advancements. c. potential for technological innovation. d. carrying capacity.
One reason for the increase in the rate of skin cancer is
a. increased exposure to ultraviolet radiation. b. water pollution. c. food additives. d. preservatives. e. air pollution.
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