Suppose an antibody to bindin and sea urchin sperm were mixed together and the mixture was added to eggs. You predict that the antibody-treated sperm will _____
A) fertilize the eggs normally
B) fertilize eggs from other species
C) not bind to the egg membrane
D) not be able to swim toward the egg
Answer: C
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Describe a method developed by molecular biologists to easily observe the success of a genetic engineering procedure involving the ligating of a gene of interest into a plasmid
What will be an ideal response?
Results from the study of globin variants indicate that
A. all amino acid substitutions cause severe phenotypic effects. B. the alteration of one amino acid can cause a genetic disease. C. extended chains do not function to carry oxygen. D. all mutations in globin are caused by changes in amino acids. E. none of these is indicated.
A microorganism that has an optimum growth temperature of 37°C, but can survive short exposure to high temperatures is called
A. an extremophile. B. a facultative psychrophile. C. a psychrophile. D. a thermophile. E. thermoduric.
Which of the following can be used to isolate pure cultures of bacteria from mixtures?
A. Streak plates B. Pour plates C. Spread plates D. All of the choices are correct.