If there are 32 sister chromatids in a normal somatic cell, how many chromosomes are there?
A. 32
B. 64
C. 16
D. 8
Answer: C
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Which of the following human diseases is linked to a class of Epsilonproteobacteria?
A. Guillian-Barre Syndrome B. Diarrhea C. Stomach ulcers D. Gastric cancer
Antipodals and synergids are
A. produced in the female gametophyte. B. the result of double fertilization. C. what will fuse to form the endosperm. D. responsible for pollen tube formation. E. nonfunctional vestigal structures.
Based on your knowledge of human papillomaviruses, human papillomaviruses use reverse transcriptase to integrate in host DNA and replicate which eventually leads to formation of tumours.
a. true b. false
All of the following are characteristics of an effective vaccine except
A. it should have a relatively long shelf life. B. it should be easy to administer. C. it should stimulate only the antibody (B-cell) response. D. it should not require numerous boosters. E. it should protect against wild forms of the pathogen.