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Chapter 2
Test Description: Chemistry Chapter Review
Instructions: Answer all questions to get your test result.
1) When considering the structure of DNA, identify the correctly paired bases.
A
cytosine and adenine
B
adenine and guanine
C
cytosine and thymine
D
adenine and thymine
2) When considering the structure of DNA, what forms the backbone of the molecule?
A
nucleotides
B
hydrogen bonds
C
deoxyribose sugar and phosphate
D
uracil
3) Which element is important for water balance, muscle contraction, and nerve impulse conduction
A
magnesium
B
iron
C
iodine
D
sodium
4) Which of the following are true of phospholipids?
A
they are modified triglycerides
B
both of these
C
neither of these
D
they are partially polar and partially nonpolar
5) With regards to lipids, which item is true?
A
trans fats are solidified oils that have added carbon atoms
B
unsaturated fats are liquid at room temperature
C
omega-3 fatty acids increase your risk for inflammatory diseases
D
saturated fats are liquid at room temperature
6) The most abundent protein in the human body is:
A
glucose
B
collagen
C
denatured antibodies
D
they are all equally abundent
7) The liver stores carbohydrates in the form of
A
glycogen
B
insulin
C
glucose
D
fat
8) Identify the false statement
A
enzymes work against catalysts to protect cells
B
sometimes enzymes are inactivated immediately after they have performed their catalytic function
C
coenzymes are derived from vitamins
D
some enzymes are purely protein
9) All but one of the following statements are true. Identify the false statement.
A
water is an organic compound
B
an ion is a charged particle that has lost or gained electrons
C
a salt is an ionic compound
D
all ions are electrolytes, substances that conduct an electrical current in solution
10) Which of the following statments about pH is incorrect?
A
gastric juice has a pH of roughly 2
B
the higher the pH number the more alkalotic the fluid tested
C
the higher the pH number the more acidic the fluid tested
D
the pH of human blood should be 7.35-7.45
*select an answer for all questions
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