Which of the following techniques can identify antibodies in a patient's serum?
A. flow cytometry
B. Southern blotting
C. Western blotting
D. phage typing
Ans: B. Southern blotting
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Alders are trees with symbiotic nitrogen fixing bacteria in their roots. This enables alders to be a key part of _________ in recently glaciated areas in Alaska.
A. intermediate disturbance B. competition C. primary succession D. inhibition E. secondary succession
Which of the following statements is false?
a. The best option for a vaccine against AIDS may be an engineered virus. b. HIV genes mutate faster than the immune system can form antibodies against their products. c. Home test kits are as accurate as those used in clinics d. It is very difficult to form a vaccine against all the mutated forms of HIV. e. The prevention of the spread of HIV currently depends upon implementing behavioral controls through education.
The uptake of neutral amino acids such as leucine, histidine, and valine is inhibited in brain cells of
PKU individuals. Indicate whether the statement is true or false.
The movement of substances from regions where their concentration is higher to regions where their concentration is lower is called
A. diffusion. B. exocytosis. C. active transport. D. pinocytosis. E. pumping.