In a normal cell, tumor suppressors are responsible for (select all correct choices):
A. increasing the rate of cell division.
B. correcting replication errors.
C. signaling death in a highly defective cell.
D. signaling the initiation of DNA replication.
B,C
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Claire lost the ability to completely empty her bladder following a stroke, and a nurse inserts a catheter into the open end of her urinary tract each day to remove the urine. Into what structure does the nurse insert the catheter?
A. collecting duct B. ureter C. bladder D. urethra E. renal pelvis F. nephron
If the frequency of expression of a recessive trait in a population is 16 percent, the frequency of the recessive allele is
what percent? a. 16 b. 25 c. 40 d. 50 e. 67
What type of fruit is a tomato?
a. dehiscent b. berry c. drupe d. indehiscent e. pome
Which of the following requires treatment with both antibiotics and antitoxins?
A) diphtheria B) tuberculosis C) whooping cough D) scarlet fever E) psittacosis