The method of choice for sterilizing items such as antibiotic solutions, chemicals, radioisotopes, and vaccines that are heat-sensitive is:
a. dry, low temperature heat.
b. moist, low temperature heat.
c. filtration.
d. chemical.
C
A filtration method that does not use heat is the method of choice for sterilizing items that are heat sensitive.
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Which of the following is NOT TRUE of the absorptive period?
A. Glucose absorption from the gut is high. B. Glucose utilization by cells is high. C. Fat utilization by cells is high. D. Synthesis of triglycerides is high. E. Breakdown of glycogen is low.
Answer the question using the accompanying figure. In the internal leaf structure, the structure labeled "4" is ____
a. a vascular bundle b. spongy mesophyll c. epidermis d. a stoma e. palisade mesophyll
The 30-cm floral tube of the flower Angraecum and the 35-cm proboscis of its hawk moth pollinator are the result of
a. preadaptation. b. adaptive radiation. c. coevolution. d. convergent evolution. e. key innovation.
What would happen if a root was rotated 90 degrees as a result of a shovel moving the plant during gardening?
a. Statoliths would settle on the new bottom of each gravity sensing cell with no effect on auxin. b. Auxin efflux carriers would be redistributed to the upward-facing side of the root or stem. c. Statoliths would resettle on the new bottom and auxin efflux carriers would be redistributed to the new bottom. d. The root would not recognize the gravity change. e. The root would stop growing downwards.