Question 1

Which of the following best describes an element?

Accepted Answer

A pure substance consisting of only one type of atom, represented by a chemical symbol.

Question 2

Which of the following is the correct chemical symbol for nitrogen?

Accepted Answer

N

Question 3

In a water molecule, what type of bond holds the hydrogen and oxygen atoms together?

Accepted Answer

Covalent bond

Question 4

Which of the following is a characteristic of acids?

Accepted Answer

They have a higher concentration of $$H^+$$ ions.

Question 5

A carbohydrate has a hydrogen to oxygen ratio of:

Accepted Answer

$$2:1$$

Question 6

Which of the following is NOT a function of lipids in the human body?

Accepted Answer

Catalyzing chemical reactions

Question 7

Which of the following statements about water is TRUE?

Accepted Answer

Water has a slightly negative charge on oxygen and a slightly positive charge on hydrogen.

Question 8

Which of the following is a polymer made of nucleotides?

Accepted Answer

DNA

Question 9

If two atoms share electrons equally, what type of bond is formed?

Accepted Answer

Nonpolar covalent bond

Question 10

Which of the following is the monomer (building block) of proteins?

Accepted Answer

Amino acids

Question 11

Which of the following best describes a chemical reaction?

Accepted Answer

A process in which atoms are rearranged to form new substances.

Question 12

What is the pH of a neutral substance?

Accepted Answer

$$7$$

Question 13

Which of the following is a function of enzymes?

Accepted Answer

Speed up chemical reactions

Question 14

Which of the following is a characteristic of carbohydrates?

Accepted Answer

They provide energy for cellular processes.

Question 15

Which of the following is a disaccharide?

Accepted Answer

Sucrose

Question 16

Which of the following is TRUE about ATP?

Accepted Answer

ATP is a nucleotide that supplies energy for cellular work.

Question 17

Which of the following is a function of proteins?

Accepted Answer

Catalyzing chemical reactions

Question 18

Which of the following is a characteristic of lipids?

Accepted Answer

They are insoluble in water.

Question 19

Which of the following is a base?

Accepted Answer

Sodium hydroxide ($$NaOH)$$

Question 20

Which of the following is a monomer of carbohydrates?

Accepted Answer

Monosaccharide

Fundamental Chemistry Concepts for Anatomy & Physiology

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