A patient's serum, Mycobacterium, guinea pig complement, sheep red blood cells, and anti-sheep red blood cell antibodies are mixed in a test tube. What happens if the patient has antibodies to Mycobacterium?
A) Bacteria fluoresce.
B) Hemagglutination occurs.
C) Hemagglutination-inhibition occurs.
D) Hemolysis occurs.
E) No hemolysis occurs.
E
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Griffith first proposed the "transformation principal" through his studies on Streptococcus pneumoniae bacterium. Which of the following molecules was later found to be responsible for this phenomenon?
A. protein. B. RNA. C. DNA. D. phage. E. bacteriophage.
Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the assembly of
microtubules. Speculate how this drug works to inhibit cancer cell growth.
a. Vinblastine inhibits transition from G1 to S. b. Vinblastine inhibits transition from S to G2. c. Vinblastine inhibits cytokinesis. d. Vinblastine disrupts mitotic spindle formation and consequently mitosis. e. Vinblastine inhibits cyclin production.
Which number identifies a region near the promoter that increases the rate of transcription?
a. 2 b. 3 c. 4 d. 5 e. 6
Which of the following has not contributed to the evolutionary success of arthropods?
a. jointed appendages b. water vascular system c. well-developed sense organs d. hard exoskeleton e. compound eyes