Which of the following statements about the glycocalyx is false?
A) It may be composed of polysaccharide.
B) It may be composed of polypeptide.
C) It may be responsible for virulence.
D) It is used to adhere to surfaces.
E) It protects from osmotic lysis.
Answer: E) It protects from osmotic lysis.
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In 1440, there were approximately how many people
living on Easter Island? a. 1 million b. 95,000 c. 15,000 d. a few hundred e. none of these
To make a typical Southern blot, genomic DNA is extracted and cut into fragments and the fragments are separated by
____________________. Fill in the blank(s) with the appropriate word(s).
Which of the following best describes the orthodromic response of a motor nerve?
a. Spinal cord to effector (muscle) b. Effector (muscle) to spinal cord c. Skin to spinal cord d. Spinal cord to brain
Why do woodland star flowers likely abort flower heads with Greya moths in geographic locations where other nonflower-feeding pollinators are present?
a. Greya moths do not pollinate woodland stars in locations with multiple pollinators. b. Pollination by Greya is no longer essential for the reproduction of woodland stars. c. Pollen becomes limited and woodland stars can no longer afford to lose seed to Greya larvae. d. B and C.