To increase the chance of detecting carcinogens in the Ames test, the test substance is treated with
A. penicillin.
B. heat.
C.
ground-up rat liver.
D. reverse transcriptase.
E. penicillin AND heat.
C
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Eukaryotic mRNAs are modified by addition of a poly(A) sequences at the 3' end and 7-methyl guanosine at the 5' end.
Answer the following statement true (T) or false (F)
Oxygen has an atomic mass of 16 and an atomic number of 8.
A. Oxygen has 16 neutrons. B. Oxygen has 8 electrons. C. Oxygen can form two bonds with other atoms. D. Oxygen has 16 neutrons and 8 electrons. E. Oxygen has 8 electrons and can form two bonds with other atoms.
If both parents are "carriers" due to the presence of one copy of the cystic fibrosis allele, what are the odds that they would have a normal child?
a. 0 b. 25% c. 50% d. 75% e. 100%
Which of the following statements about anabolic steroids is false?
A) They cause a general buildup of muscle mass. B) They often cause the body to reduce its normal output of sex hormones. C) They promote bone growth. D) They can stimulate mood swings and violent behavior.