What type of mutation leads to a frameshift in the reading of DNA?
A. All point mutations
B. Deletions only
C. Insertions only
D. Both insertions and deletions
Answer: D
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Blood and lymph may carry
A. antibodies. B. complement. C. lysozyme. D. interferon. E. All of the choices are correct.
A scientist is investigating a hormone response in rose bush stems by removing the apical meristems of the main stems. What is the most likely result of this experiment and what hormone is responsible?
A. New apical buds will develop under the influence of auxin. B. Larger, deeper roots will form under the influence of cytokinin. C. More leaf buds will appear along the main stems under the influence of auxin. D. Flowers will turn yellow and fall off under the influence of auxin. E. Lateral buds will develop under the influence of cytokinin.
Telomerase is an enzyme characteristic of normal cells that is active in DNA repair; most cancer cells have been found to lack telomerase
Indicate whether the statement is true or false
Which of the following correctly describes papilloma virus (HPV) effects on cell growth?
A. Viral E7 degrades cellular p53 B. Causes insertional inactivation of critical genes C. Viral E6 perturbs the normal function of cellular Rb D. Viral E6 stimulates degradation of cellular p53