When your mother told you to drink your milk because it would help build strong bones, she was
A) wrong, because milk contains large amounts of vitamin D, which causes rickets.
B) wrong, because milk contains large amounts of vitamin E, which helps with the formation of red blood cells.
C) right, because milk contains vitamin C, which is involved in maintaining the walls of blood vessels in the retina.
D) wrong, because milk contains large amounts of vitamin C, which causes scurvy.
E) right, because milk contains vitamin D, which promotes bone growth.
E
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Which of the following sets of terms belong together?
A. involuntary, autonomic, sympathetic B. voluntary, autonomic, parasympathetic C. involuntary, somatic, parasympathetic D. voluntary, somatic, sympathetic
A graduate student is trying to isolate bacterial mRNA for an enzyme that will degrade trinitrotoluene (TNT)
She's frustrated to find that the enzyme isn't produced when the bacterium in question is grown on nutrient agar. What might she do to solve the problem and obtain the mRNA? A. Add nitrogen and toluene to the agar to drive up synthesis of TNT. B. Add TNT to the agar-this will drive synthesis of the enzyme to degrade it, leading to production of the mRNA the student is looking for. C. Remove glucose from the agar-this will cause the bacteria to shift to other compounds for their energy purposes. D. Remove all sugars from the agar-this will cause the bacteria to shift to other compounds for their energy purposes. E. Add TNT to the agar-this will drive synthesis of the enzyme to degrade it, leading to production of the mRNA the student is looking for AND remove all sugars from the agar-this will cause the bacteria to shift to other compounds for their energy purposes.
Where does spermatogenesis occur?
A. vas deferens B. ovaries C. lobules of the testes D. bulbourethral gland E. urethra
If black fur is produced by a recessive allele, which genotype is most likely to produce a black individual?
A. Bb B. Cb C. bb D. BB