Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that
arose from _____.
a. extensive exposure to long wavelength radiation
b. contaminated DNA samples
c. chemical exposure
d. unrepaired DNA replication errors
e. extensive exposure to x-rays
ANSWER: e
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Which of the following correctly describes the path of a drop of blood leaving the human heart?
A. heart arteries arterioles capillaries venules veins heart B. heart veins venules capillaries arterioles arteries heart C. heart arterioles arteries capillaries veins venules heart D. heart venules veins capillaries arteries arterioles heart E. heart arteries veins capillaries arterioles venules heart
When an enzyme shows Michaelis-Menton kinetics, Km is equal to [S] when the reaction rate is:
A. 0.5 Vmax. B. 0.5 V0. C. 0.1 Vmax. D. 0.1 V0. E. Vmax [S].
Oaks, birches and corn produce both staminate and pistillate flowers on the same plant. What term describes this type of plant?
A. monoecious B. dioecious C. hermaphroditic D. complete E. determinant
An herbivore is indicated by
a. A. b. B. c. C. d. D. e. E.