Christina Marshall
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Quiz on Bio 110 Final: Chapter 3, created by Christina Marshall on 12/12/2017.

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Christina Marshall
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Bio 110 Final: Chapter 3

Question 1 of 10

1

Molecules that are found in living cells and contain the element ___________ are considered organic molecules.

Select one of the following:

  • hydrogen

  • carbon

  • oxygen

  • nitrogen

  • calcium

Explanation

Question 2 of 10

1

The versatility of carbon to serve as the backbone for a variety of different molecules is due to

Select one of the following:

  • the ability of carbon atoms to form four covalent bonds

  • the fact that carbon usually forms ionic bonds with many different atoms

  • the abundance of carbon in the environment

  • the ability of carbon to form covalent bonds with many different types of atoms

  • both a and d

Explanation

Question 3 of 10

1

Which of the following type(s) of bonds are nonpolar?

Select one of the following:

  • C--C

  • C--O

  • C--H

  • both a and b

  • both a and c

Explanation

Question 4 of 10

1

Which of the following molecules are isomers of each other?

Select one of the following:

  • a and b

  • a and c

  • b and c

  • a, b, and c

  • None of them are isomers of each other

Explanation

Question 5 of 10

1

A polysaccharide that is commonly found in animals cells and stores energy is

Select one of the following:

  • glucose

  • sucrose

  • glycogen

  • starch

  • cellulose

Explanation

Question 6 of 10

1

In contrast to other fatty acids, essential fatty acids

Select one of the following:

  • are always saturated fats.

  • cannot be synthesized by the organism and are necessary for survival.

  • can act as building blocks for large, more complex macromolecules.

  • are the simplest form of lipids found in plant cells.

  • are structural components of plasma membranes

Explanation

Question 7 of 10

1

The structures of three molecules are shown below. Which of them is (are) amphipathic?

Select one of the following:

  • a only

  • b only

  • c only

  • b and c

  • a and c

Explanation

Question 8 of 10

1

The monomers of proteins are ___________, and these are linked by polar covalent bonds commonly referred to as ______________.

Select one of the following:

  • nucleotides, peptide bonds

  • amino acids, ester bonds

  • hydroxyl groups, ester bonds

  • amino acids, peptide bonds

  • monosaccharides, glycosidic linkages

Explanation

Question 9 of 10

1

A _______________ is a portion of protein with a particular structure and function.

Select one of the following:

  • peptide bond

  • domain

  • phospholipid

  • wax

  • monosaccharide

Explanation

Question 10 of 10

1

A DNA molecule contains 30% G. What percentage of its bases are A?

Select one of the following:

  • 30%

  • 20%

  • 15%

  • 10%

  • none of the above

Explanation