Which of the following nitrogenous bases is usually found in RNA but not in DNA?
A. Adenine
B. Uracil
C. Thymine
D. Guanine
Answer: B
Biology & Microbiology
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The ideal environment for the growth of fungi, such as mushrooms, is
a. damp and dark. b. damp and light. c. dry and dark. d. dry and light
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What is the function of the acrosome of a sperm cell?
1.Contain enzymes that help the sperm penetrate an egg
2.Contain the DNA
3.Locomotion
4.Produce energy for locomotion
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The ability to tolerate lactose throughout life most likely arose in ________
A) populations that live in cold climates B) populations that live in wet climates C) cultures that keep dairy herds D) Native Americans
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Which of the following represents the amount of DNA in a typical G2 cell?
a. n b. 2n c. 4n d. 8n
Biology & Microbiology