Q: Which of the following is a correct representation of the hydrolysis of ATP?

$$ATP + H_2O \rightarrow ADP + P_i + \text{energy}$$

Question 1

Which property of carbon most directly explains its ability to form a vast diversity of organic molecules?

Accepted Answer

Its ability to form four covalent bonds with a variety of atoms

Question 2

A molecule with the formula $$C_5H_{12}$$ can exist as several isomers. Which type of isomerism is demonstrated when the carbon atoms are arranged in different branching patterns?

Accepted Answer

Structural isomerism

Question 3

Which functional group is present in both estradiol and testosterone, and is responsible for their classification as steroids?

Accepted Answer

Four fused carbon rings

Question 4

What is the shape of a carbon atom that is bonded to four other atoms by single covalent bonds?

Accepted Answer

Tetrahedral

Question 5

Which of the following best describes the difference between cis and trans isomers?

Accepted Answer

They differ in the spatial arrangement of atoms around a double bond

Question 6

Why are enantiomers important in pharmaceutical chemistry?

Accepted Answer

Only one enantiomer may be biologically active, while the other can be ineffective or harmful

Question 7

Which functional group is most likely to act as an acid by donating a proton ($$H^+) in $$aqueous solution?

Accepted Answer

Carboxyl group ($$-COOH)$$

Question 8

A fat molecule contains long hydrocarbon chains. What property do these chains confer to the molecule?

Accepted Answer

They allow the molecule to store large amounts of energy

Question 9

Which of the following molecules is an important source of energy for cellular processes and contains three phosphate groups?

Accepted Answer

Adenosine triphosphate (ATP)

Question 10

What happens when ATP reacts with water in a cell?

Accepted Answer

It forms ADP and releases energy

Question 11

Which element is NOT one of the major elements found in all living organisms?

Accepted Answer

Calcium (Ca)

Question 12

Which statement best explains why carbon is the backbone of biological molecules?

Accepted Answer

Carbon can form stable covalent bonds with up to four other atoms, including itself

Question 13

Which functional group is found in amino acids and acts as a base by accepting a proton ($$H^+$$)?

Accepted Answer

Amino group ($$-NH_2$)

Question 14

A molecule has the formula $$C_6H_{12}O_6$. Which of the following statements is true about its isomers?

Accepted Answer

Isomers can differ in the arrangement of atoms and thus have different properties

Question 15

Which of the following best describes the role of functional groups in organic molecules?

Accepted Answer

They are responsible for the molecule's distinctive chemical reactions and properties

Question 16

Which of the following is a correct representation of the hydrolysis of ATP?

Accepted Answer

$$ATP + H_2O ightarrow ADP + P_i + 	ext{energy}$$

Question 17

Which of the following is NOT a property that contributes to the diversity of carbon skeletons in organic molecules?

Accepted Answer

Formation of ionic bonds

Question 18

A pharmaceutical company develops a new drug that is a mixture of two enantiomers. What is a potential risk of this approach?

Accepted Answer

One enantiomer may be biologically active while the other is inactive or harmful

Question 19

Which functional group is most likely to be found in molecules that transfer energy within cells, such as ATP?

Accepted Answer

Phosphate group ($$-PO_4$)

Carbon and the Molecular Diversity of Life

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