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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.

Acytosine and thymine Bcytosine and adenine Cadenine and thymine Dadenine and guanine

2) When considering the structure of DNA, what forms the backbone of the molecule?

Anucleotides Bhydrogen bonds Curacil Ddeoxyribose sugar and phosphate

3) Which element is important for water balance, muscle contraction, and nerve impulse conduction

Asodium Biron Ciodine Dmagnesium

4) Which of the following are true of phospholipids?

Aneither of these Bboth of these Cthey are partially polar and partially nonpolar Dthey are modified triglycerides

5) With regards to lipids, which item is true?

Aunsaturated fats are liquid at room temperature Btrans fats are solidified oils that have added carbon atoms Csaturated fats are liquid at room temperature Domega-3 fatty acids increase your risk for inflammatory diseases

6) The most abundent protein in the human body is:

Athey are all equally abundent Bdenatured antibodies Cglucose Dcollagen

7) The liver stores carbohydrates in the form of

Aglucose Bfat Cinsulin Dglycogen

8) Identify the false statement

Aenzymes work against catalysts to protect cells Bcoenzymes are derived from vitamins Csometimes enzymes are inactivated immediately after they have performed their catalytic function Dsome enzymes are purely protein

9) All but one of the following statements are true. Identify the false statement.

Aan ion is a charged particle that has lost or gained electrons Bwater is an organic compound Call ions are electrolytes, substances that conduct an electrical current in solution Da salt is an ionic compound

10) Which of the following statments about pH is incorrect?

Athe higher the pH number the more acidic the fluid tested Bgastric juice has a pH of roughly 2 Cthe higher the pH number the more alkalotic the fluid tested Dthe pH of human blood should be 7.35-7.45

*select an answer for all questions

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