Why does Neisseria gonorrhea adhere only to mucosal epithelial cells in the genitourinary tract, eye, rectum, and throat?
What will be an ideal response?
Answer: N. gonorrhea has a surface protein called Opa (opacity associated protein) that binds specifically to a host protein called CD66 that is found only on the surfaces of these cells.
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Over the last 400,000 years, how have atmospheric CO2 levels changed? Select all that apply
A. Atmospheric CO2 levels have remained the same. B. Atmospheric CO2 levels have been steadily increasing overall. C. Atmospheric CO2 levels have been steadily decreasing overall. D. Atmospheric CO2 levels have fluctuated periodically.
In intervals of interphase, G stands for _____
a. gap b. growth c. Gey d. gene e. group
When one gene product suppresses the effect of another, it is defined as ________
a. epistasis b. incomplete dominance c. pleiotropy d. codominance
In flowering plants the integuments of the ovule develop into a(n) _____.
Fill in the blank(s) with the appropriate word(s).