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Chapter 2 Review 2
Test Description: More Chapter 2 Review
Instructions: Answer all questions to get your test result.
1) Which of the following are true?
A
all of these
B
HCO3 is a base that the body uses as a buffer
C
HCO3 is bicarbonate ion
D
carbonic acid dissociates into bicarbonate ions and hydrogen
2) Which is false regarding ATP?
A
ATP stands for adenosine triphosphate
B
ATP is hydrolyzed to provide energy for cellular needs
C
it is made up of ADP and Pi
D
life can go on without ATP
3) The four elements that comprise roughly 96% of the human body are:
A
carbon, hydrogen, oxygen, potassium
B
carbon, hydrogen, oxygen, calcium
C
carbon, hydrogen, oxygen, nitrogen
D
carbon, hydrogen, oxygen, sodium
4) Which fat-soluable vitamin is produced when the skin is exposed to sunlight and is essential for normal bone growth?
A
vitamin A
B
vitamin D
C
vitamin E
D
vitamin K
5) What am I? I am a heterogenous mixture that often appears translucent. My particles are large but they do not settle out although they do scatter light. An example of me is Jell-O.
A
molecule
B
colloid
C
suspension
D
compound
6) Which element is present in bone and is also an important cofactor in a number of metabolic reactions?
A
hydrogen
B
iron
C
magnesium
D
iodine
7) Which element is a component of hemoglobin?
A
sulfur
B
iodine
C
iron
D
chlorine
8) The mass number of an atom is:
A
none of these
B
the sum of the masses of its electrons and neutrons
C
the sum of the masses of its protons and neutrons
D
the sum of the masses of its protons and electrons
9) Which of the following is/are true of isotopes
A
same number of protons and electrons but different number of neutrons
B
elements with two or more structural variations
C
all are true
D
unstable isotopes are radioisotopes and are used in medical imaging
10) C6H12O6 is:
A
a carbohydrate
B
glucose
C
all of these
D
6 cargon atoms, 12 hydrogen atoms, 6 oxygen atoms
*select an answer for all questions
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