Chapter 2 The Chemical Basis of Life

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Chapter 2  The Chemical Basis of Life

 

 

Complete chapter Questions And Answers
 

Sample Questions

 

 

TRUE/FALSE

1. Biochemistry deals with the chemical makeup of living organisms and the underlying process of life activities.

ANS: T DIF: Memorization REF: Page 34 TOP: Introduction

2. The number of protons in the nucleus of an atom determines its atomic mass.

ANS: F DIF: Memorization REF: Page 36 TOP: Atomic Number and Atomic Weight

3. The positively charged electrons are found in clouds outside the nucleus of an atom.

ANS: F DIF: Memorization TOP: Atomic Structure

4. Two shared pairs of electrons represent a single covalent bond. ANS: F DIF: Application REF: Page 39

5. The digestion of food is an example of a decomposition reaction.

ANS: T DIF: Application REF: Page 40 TOP: Chemical Reactions

REF: Page 36

TOP: Covalent Bonds

6. The number and arrangement of electrons orbiting in an atom’s outer shell determine its chemical activity.

ANS: T DIF: Application REF: Page 37 TOP: Energy Levels 7. An atom is chemically inert if its outermost shell has two pairs of electrons.

ANS: F DIF: Application REF: Page 37 TOP: Energy Levels
8. An isotope of an element contains the same number of neutrons but different numbers of protons.

ANS: F DIF: Memorization REF: Page 37 TOP: Isotopes

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