$$C_{12}H$$_{22}$$O_{11} + H_2O \\rightarrow C_6H_{12}O_6$ + C_6H_{12}O_6$

Question 1

Which of the following best describes the difference between organic and inorganic compounds?

Accepted Answer

Organic compounds are primarily composed of carbon and hydrogen, while inorganic compounds may lack carbon.

Question 2

Which of the following is the correct Lewis structure for methane ($$CH_4$$)?

Accepted Answer

A carbon atom single bonded to four hydrogen atoms, with no lone pairs on carbon.

Question 3

Which statement about the geometry of carbon atoms having four single bonds is correct?

Accepted Answer

The geometry is tetrahedral with bond angles of approximately $$109.5^\circ.$$

Question 4

Given the condensed formula $$CH_3CH_2OH$$, which class of organic compound does this molecule belong to?

Accepted Answer

Alcohol

Question 5

Which of the following molecules contains a chiral carbon?

Accepted Answer

$$CH_3CH(OH)CH_2CH_3$$

Question 6

Which statement best explains why alcohols generally have higher boiling points than alkanes of similar molecular weight?

Accepted Answer

Alcohols can form hydrogen bonds due to the presence of the hydroxyl group.

Question 7

Which of the following is the correct Haworth (cyclic) structure for $$eta-D-$$glucose?

Accepted Answer

The $$-OH$$ group on carbon 1 is above the plane of the ring.

Question 8

Which of the following is a correct general formula for an amino acid?

Accepted Answer

$$RCH(NH_2$)COOH$$

Question 9

Which of the following best describes the primary structure of a protein?

Accepted Answer

The sequence of amino acids in the polypeptide chain.

Question 10

Which factor would most likely increase the rate of an enzyme-catalyzed reaction?

Accepted Answer

Increasing the substrate concentration up to the point of enzyme saturation.

Question 11

Which of the following is a correct equation for the hydrolysis of sucrose?

Accepted Answer

$$C_{12}H$$_{22}$$O_{11} + H_2O \rightarrow C_6H_{12}O_6$ + C_6H_{12}O_6$

Question 12

Which of the following is NOT a class of protein function?

Accepted Answer

Polysaccharide

Question 13

Which statement best describes what happens when a protein is denatured?

Accepted Answer

The secondary, tertiary, and quaternary structures are disrupted, but the primary structure remains intact.

Question 14

Which of the following is the correct IUPAC name for the compound $$CH_3CH=$$CHCH_3$$?

Accepted Answer

2-butene

Question 15

Which of the following statements about cis and trans isomers of alkenes is correct?

Accepted Answer

Trans isomers have substituents on opposite sides of the double bond.

Question 16

Which of the following amino acids contains a sulfur atom in its side chain?

Accepted Answer

Methionine

Question 17

Which of the following best describes the lock-and-key model of enzyme action?

Accepted Answer

The substrate fits exactly into the active site of the enzyme, like a key into a lock.

Question 18

Which of the following is a correct general formula for a monosaccharide?

Accepted Answer

$$C_nH_{2n}O_n$$ where $$n = 3, 4, 5, 6$$

Question 19

Which of the following is a correct description of a peptide bond?

Accepted Answer

A bond formed between the carboxyl group of one amino acid and the amino group of another.

Organic and Biochemical Chemistry: Key Concepts and Learning Objectives

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