The nitrogenous bases of DNA stores genetic information. Indicate whether the statement is true or false
T
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If 5-bromouracil was added to a culture of actively dividing bacterial cells, resulting mutations could eventually become a stable part of the cellular genome.
Answer the following statement true (T) or false (F)
The bacterium Thermus aquaticus proved to be
important in biology because a. it put researchers on a path that led to the great domain of life, the Archaea. b. it makes a heat resistant enzyme. c. its heat-resistant enzyme can catalyze the polymerase chain reaction. d. synthetic forms of its heat-resistant enzyme triggered a revolution in biotechnology. e. all of these are true.
Heredity plays a major role in about what percent of cancers?
a. 1% b. 5% c. 10% d. 25% e. 50%
Which of the following is true of steroids?
A) Steroids are polymers. B) If people inject male steroid hormones, they can build muscle mass with no side effects. C) Some amino acids are steroids. D) Steroids exist naturally in humans as hormones. E) Steroids contain a central, single-ring carbon structure.