Which of the following viruses has not been associated with a particular type of cancer?
A) influenza virus
B) hepatitis B virus
C) Epstein–Barr virus
D) human papilloma virus
E) hepatitis C virus
Answer: A
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Which of the following is at the highest energy level?
A. A reaction center chlorophyll that has received the energy from a blue-light photon B. A reaction center chlorophyll that has received the energy from a red-light photon C. A reaction center chlorophyll that has received the energy from a green-light photon
Water is a strongly polar molecule. How does it cross the plasma membrane?
What will be an ideal response?
Coreceptor inhibitors block HIV infection by preventing which of the following?
A) binding of the HIV virion onto the plasma membrane B) binding of the HIV virion onto the CCR5 receptor C) binding of the HIV virion onto the gp120 protein D) degrading the coreceptor so the virion cannot attach E) binding of the HIV virion onto the CD4 receptor
Women with PKU who eat a normal diet during pregnancy will have children with ____
a. only a 25% chance of developing PKU b. intellectual disability only if the child’s phenotype is homozygous recessive c. intellectual disability only if the child’s phenotype is heterozygous d. intellectual disability regardless of the child’s genotype e. no greater chance of having PKU than if she ate a special PKU diet