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