The only protozoan that causes an STI that affects mostly women is
a) Trichomonas vaginalis.
b) Gardnerella vaginalis.
c) Mycoplasma hominis.
d) Haemophilus ducreyi.
Ans: a) Trichomonas vaginalis.
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Which of the following immunogens is MOST effective as a vaccine?
A) chemically inactivated bacteria B) dead virus C) live virus D) toxoid
Animals that sexually reproduce are ________ and produce __________ gametes
A. haploid; diploid B. diploid; haploid C. diploid; diploid D. haploid; haploid
Embryonic cells that have the potential to become any cell type are called:
a. connective cells b. epithelial cells c. muscle cells d. nerve cells e. stem cells
What pigments are present in the samples derived from individuals that are homozygous recessive for shell color?
a. Red and grey b. Yellow and grey c. Red and yellow d. Red, yellow, and grey