FNU Chemical Reactions Responsible for Growth Repair and Nutrition MCQs

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1. 
   
   nformation in living organisms is transmitted by which mechanism(s)?

   1. genes only
   2. genes, hormones, and neurotransmitters
   3. neurotransmitters only
   4. genes and hormones
   5. hormones only

2. 
   
   Question 2

   1 PointA stalk of celery is placed in a solution of blue colored dye. After one hour, the leaves have blue fluid in their veins. Which property of water is being demonstrated?

   1. surface tension
   2. high specific heat
   3. evaporation and cooling
   4. adhesion and cohesion
   5. lower density as a solid than as a liquid

3. 
   
   Question 3

   1 PointA substance that is resistant to changes in pH is called a(n) buffer.__________________

   1. True
   2. False

4. 
   
   Question 4

   1 PointA DNA molecule is made up of:

   1. carbohydrates
   2. nucleotides
   3. lipids
   4. fatty acids
   5. proteins

5. 
   
   Question 5

   1 PointAll of the members of the same species occupying the same area at the same time constitute a(n):

   1. community
   2. biosphere
   3. population
   4. individual
   5. ecosystem

6. 
   
   Question 6

   1 PointA base is defined as a(n) _____ acceptor.

   1. anion
   2. proton
   3. electron
   4. neutron
   5. cation

7. 
   
   Question 7

   1 PointAs water boils and turns to steam, what happens to the hydrogen bonds?

   1. The hydrogen bonds break.
   2. The hydrogen bonds become stronger.
   3. The hydrogen bonds generate additional bonds.
   4. The hydrogen bonds continually break and join together again.
   5. The hydrogen bonds form a crystalline lattice structure.

8. 
   
   Question 8

   1 PointA(n) inorganic compound is one that contains carbon.__________________

   1. True
   2. False

9. 
   
   Question 9

   1 PointA chlorine atom has 17 protons and 18 neutrons. What is its atomic mass?

   1. 306 amu
   2. 18 amu
   3. 17 amu
   4. 35 amu
   5. 1 amu

10. 
    
    Question 10

    1 PointIn living organisms, chemical reactions responsible for growth, repair, and nutrition are collectively referred to as:

    1. development
    2. metabolism
    3. homeostasis
    4. adaptation
    5. genetics