What species of Rhizopus may infect people who
have a weakened immune system?
a. R. oryzae
b. R nigicans
c. R. stolonifer
d. R. arrhizus
e. any of these
Answer: a
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What is a phospholipid?
A. A special kind of lipid with a water-fearing head and 2 water-loving tails B. A special kind of lipid with 2 water-loving heads and 1 water-fearing tail C. A special kind of lipid with a water-loving head and 2 water-fearing tails D. A special kind of lipid with 2 water-fearing heads and 1 water-loving tail
A direct immunofluorescent antibody (DFA) test was performed on a sputum sample that yielded a positive test. The organism grew on BCYE medium and was a thin gram-negative, faintly staining bacillus. What is the drug of choice for this organism?
a. Fluoroquinolones b. Erythromycin c. Penicillin d. Aminoglycosides
In your observations of a new rotifer species, you note that diploid females can lay diploid eggs that in turn become diploid female adults. What do you conclude about this behavior?
A. This asexual reproduction by way of budding of a new individual from the parent. B. This is sexual reproduction by way of parthenogenesis. C. This is sexual reproduction because sperm must have been stored in the female for later fertilization of her eggs. D. This is sexual reproduction by way of diploid females laying haploid eggs that hatch into haploid males who in turn produce sperm that fertilizes other haploid eggs. E. This is asexual reproduction by way of parthenogenesis.
In a neuron, ion channels permit movement of (but don't pump) ____________.
A) only sodium (Na+) B) only chloride (Cl-) C) sodium (Na+) and chloride (Cl-) D) only potassium (K+) E) sodium (Na+) and potassium (K+)