Bio150 exam1(2)

Carboxyl

functional group determines the acidic properties of a molecule

It contributes to water's high specific heat and surface tension.

What is the role of hydrogen bonding in the properties of water?

Phosphate

What functional group is important in energy transfer in cells?

the atomic mass

Which of the following changes when you change the number of neutrons in the nucleus of an element?

Hydrocarbons

Which of the following describes compounds that only contain carbon and hydrogen?

Aldehyde or ketone

An example of a carbonyl-containing compound is known as:

Hydroxyl

What is the functional group characteristic of alcohols?

Geometric isomers

What is the term for isomers that differ in the orientation of groups around a double bond?

Amino

Which functional group is present in amino acids?

Geometric isomers

Cis and trans isomers are types of which isomerism?

Alcohols

Hydroxyl groups are characteristic of which class of compounds?

C-H bonds

What type of bond primarily allows hydrocarbons to be non-polar?

Sulfhydryl

Which functional group is associated with thiols?

Ionic bonds involve complete electron transfer, while covalent bonds involve electron sharing.

What distinguishes an ionic bond from a covalent bond?

By losing electrons

How do cations become positively charged?

Presence of carbon atoms

Which molecular feature is common to all organic compounds?

Structural isomers

What type of isomerism occurs when two compounds have the same molecular formula but different arrangements of atoms?

It contains carbon and hydrogen atoms.

Which of the following statements correctly defines an organic molecule?

The position of substituent groups around a double bond.

What distinguishes cis isomers from trans isomers?