Four of the five vitamins listed below are all of the
same class. Select the exception.
a. vitamin A
b. vitamin K
c. vitamin C
d. vitamin D
e. vitamin E
Answer: c
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Which cycle involves materials moving through a series of transfers from living to nonliving systems and then back again?
A) biogeochemical B) geological C) uranium-lead D) continental
In a cell in which 2n = 6, the independent assortment of chromosomes during meiosis can by itself give rise to ________ genetically different gametes.
A) two B) four C) five D) six E) eight
Cells can increase the number or size of some organelles in response to new demands. The amount of one organelle often is increased dramatically in the livers of alcoholics. Based on what you know of organelle function, this organelle is the:
A) smooth endoplasmic reticulum. B) nucleus. C) mitochondrion. D) Golgi apparatus. E) ribosome.
Accumulation of a metabolic pathway product may result in decreased activity of the pathway enzymes.
Answer the following statement true (T) or false (F)