What is made by adding Streptococcus thermophilus and Lactobacillus bulgaricus to milk?
A. Sour cream
B. Butter
C. Tofu
D. Cheese
E. Yogurt
Answer: E
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We currently know:
A. all of the genetic risk factors for most cancers and many common diseases. B. many genetic risk factors for some cancers and common diseases. C. the individual mutations that cause colon cancer, breast cancer, and Alzheimer's disease. D. the individual mutations that cause breast cancer, lung cancer, and inflammatory bowel disease. E. the combination of genetic risk factors that cause skin cancer, lung cancer, and colon cancer.
Enzymes
a. change the rate of a reaction. b. change the direction of a reaction. c. change the free energy of a reaction. d. are used up in a reaction. e. are present in concentrations approaching their substrates' concentrations.
Synthesis of new sperm cells occurs in the
A) ductus deferens. B) urethra. C) prostate gland. D) epididymis. E) seminiferous tubules.
Whenever a species of an organism has been introduced into an area that contains a variety of unfilled niches, a variety of ecological opportunities are available and the descendants of this species evolve in a variety of ways. These variations permit the organisms to take advantage of these ecological opportunities. This illustrates
A. the inheritance of characteristics that the individual developed as a response to the forces of the environment. B. convergence. C. polyploidy. D. adaptive radiation.