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This will help you prepare for the Unit 2: Chemistry of Life test.

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Unit 2 Practice Quiz

Unit 2 Practice Quiz

Question 1 of 9

1

Which of the following is a list of monomers?

Select one or more of the following:

  • carbohydrates, nucleic acids, proteins

  • nucleotides, amino acids, monosaccharides

  • glucose, amino acids, fatty acids

  • lipids, proteins, amino acids

Explanation

Question 2 of 9

1

Which of the following are biological processes?

Select one or more of the following:

  • monomers, polymers

  • lipids, carbohydrates, H2O

  • dehydration synthesis, protein synthesis, hydrolysis

  • photosynthesis, hydrolysis

Explanation

Question 3 of 9

1

Which of the following are biological macromolecules?

Select one or more of the following:

  • carbohydrates

  • lipids

  • nucleic acids

  • proteins

  • water

  • salt

Explanation

Question 4 of 9

1

Which of the following elements are found in a protein?

Select one or more of the following:

  • carbon

  • hydrogen

  • oxygen

  • nitrogen

  • phosphorous

  • sodium

Explanation

Question 5 of 9

1

Why is water considered a polar molecule?

Select one or more of the following:

  • it contains two hydrogen atoms

  • both ends carry a positive charge

  • both ends carry a negative charge

  • each end has a different charge (positive and negative)

  • it dissolves other polar molecules

Explanation

Question 6 of 9

1

What is the maximum number of covalent bonds one carbon atom able to form?

Select one of the following:

  • 1

  • 2

  • 4

  • 8

Explanation

Question 7 of 9

1

Which of the following describes the role of a phospholipid?

Select one of the following:

  • Phospholipids store short term energy for the cell

  • Phospholipids catalyze (speed up) chemical reactions

  • Phospholipids form the cell's membrane

  • Phospholipids carry hereditary information

Explanation

Question 8 of 9

1

Which of the following shows foods high in carbohydrates?

Select one of the following:

  • eggs, meat, fish, beans

  • fats, oils, waxes

  • bread, rice, vegetables, and sugar

Explanation

Question 9 of 9

1

Which of the following is liquid at room temperature?

Select one or more of the following:

  • saturated fatty acids

  • unsaturated fatty acids

  • phospholipids

Explanation

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