Which of the following is NOT a fatsoluble vitamin?

a. vitamin B
b. vitamin K
c. vitamin D
d. vitamin A


a. vitamin B
Vitamin B is a water-soluble vitamin.

Biology & Microbiology

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A significant event influencing the rapid evolution of plants on land after their initial appearance was the ____

a. increase of atmospheric oxygen b. reduction of ultraviolet radiation penetration through the atmosphere c. stabilization of global climates d. increase in soil nutrients e. merging of land masses

Biology & Microbiology

A population with zero growth is indicated by

a. A. b. B. c. C. d. D. e. none of these.

Biology & Microbiology

Offspring with four phenotypes in a 1:1:1:1 ratio can be produced by 

A. AaBb ´ AaBb. B. AABB ´ AaBb. C. AaBa ´ AABb. D. AaBb ´ aabb.

Biology & Microbiology

When does the human embryo implant in the wall of the uterus?

A) within a few hours of fertilization
B) about a day after conception
C) about a week after conception
D) just after gastrulation

Biology & Microbiology