Which of the following is not a pyrimidine?

A. Thymine
B. Uracil
C. Adenine
D. Cytosine


Answer: C

Biology & Microbiology

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All of the following are true regarding coral reefs

EXCEPT that they a. develop in warm, clear waters near coasts or volcanic islands. b. are found between 25 degrees north and south. c. are wave-resistant formations. d. are areas of abundant resources and minimal competition among inhabitants. e. contain the remains of hard corals and the mineral-hardened cell walls of red algae.

Biology & Microbiology

Which of the following anemias is associated with malaria?

a. aplastic b. megaloblastic anemia c. hemolytic anemia d. leukemia e. iron-deficiency anemia

Biology & Microbiology

Half a woman's somatic cells express her paternal X chromosome and half express her maternal X chromosome

Indicate whether the statement is true or false

Biology & Microbiology

Gallstones are a problem when they:

A) break and release enzymes. B) break and release cholesterol. C) block the cystic duct or common bile duct. D) get stuck in the folds of the small intestine.

Biology & Microbiology