1 | Page
Orgo/Biochem Exam 1 Questions with
Correct Answers Questions and Correct
Answers
What are the three reasons the number of Organic carbon-
containing compounds is nearly limitless? Ans: 1) Carbon can
form stable covalent bonds with other carbon atoms
2) Carbon can form stable covalent bonds with certain other
elements such as H, O, and N.
3) Carbon can form double and triple bonds with itself and certain
other elements
What is the "Rule of 4" for Carbon? Ans: In any carbon-containing
compound, the number of covalent bonds emanating from all
carbon atoms is four (also, carbon possesses no lone e- pairs)
Carbon forms ________ _________ with a number of other elements
such as __________, _____________, and _____________. Ans: stable
bonds, hydrogen, nitrogen, oxygen
Carbon can form _________ bonds with other atoms (i.e. __________
and _________ bonds) Ans: multiple; double; triple
Carbon atoms can be arranged into an _____________ number of
____________ structures: ____________, ___________, and ___________.
Ans: unlimited, hydrocarbon, linear, branched, cyclic
Organic single-bonded carbon atoms in a molecular framework can
be _________ based based upon the number of other _________
atoms they are attached to. Ans: classified, carbon
In a C-C non-cyclic, single bonded hydrocarbon, the number of
hydrogens equals... Ans: 2n + 2 (where n equals the number of
carbons)
In a C-C cyclic, single bonded hydrocarbon, the number of
hydrogens equals... Ans: 2n (where n equals the number of
carbons)
© 2025 All rights reserved
, 2 | Page
A repeating, predictable bonding pattern of C, H, N, and/or O
atoms seen repeatedly and consistently in all organic and
biochemical molecules. Ans: Functional group
An organic molecule consisting of only carbon and hydrogen
atoms. Ans: hydrocarbon
typified by carbon-carbon single bonds Ans: alkane
typified by carbon-carbon double bonds Ans: alkene
typified by carbon-carbon triple bonds Ans: alkyne
typified by a cyclic structure with alternating carbon-carbon single
bonds and double bonds Ans: phenyl
typified by an Oxygen atom flanked on one side by a H and the
other by a hydrocarbon carbon Ans: alcohol
typified by an Oxygen atom flanked by two hydrocarbon carbons
Ans: ether
typified by a Nitrogen atom flanked by a hydrocarbon carbon Ans:
amine
Five functional groups are related by the existence of a... Ans:
carbonyl group (C=O)
typified by a Carbonyl flanked on one side by a H and the other by
a hydrocarbon carbon Ans: aldehyde
typified by a Carbonyl flanked by two hydrocarbon carbons Ans:
ketone
typified by a Carbonyl flanked on one side by a Nitrogen and the
other by a hydrocarbon carbon Ans: amide
typified by a Carbonyl flanked on one side by a hydroxyl and the
other by a hydrocarbon carbon Ans: carboxylic acid
typified by a Carbonyl flanked on one side by a O-R and the other
by a hydrocarbon carbon Ans: ester
A halogen atom single-bonded to a hydrocarbon-type carbon Ans:
halide functional group
© 2025 All rights reserved
Orgo/Biochem Exam 1 Questions with
Correct Answers Questions and Correct
Answers
What are the three reasons the number of Organic carbon-
containing compounds is nearly limitless? Ans: 1) Carbon can
form stable covalent bonds with other carbon atoms
2) Carbon can form stable covalent bonds with certain other
elements such as H, O, and N.
3) Carbon can form double and triple bonds with itself and certain
other elements
What is the "Rule of 4" for Carbon? Ans: In any carbon-containing
compound, the number of covalent bonds emanating from all
carbon atoms is four (also, carbon possesses no lone e- pairs)
Carbon forms ________ _________ with a number of other elements
such as __________, _____________, and _____________. Ans: stable
bonds, hydrogen, nitrogen, oxygen
Carbon can form _________ bonds with other atoms (i.e. __________
and _________ bonds) Ans: multiple; double; triple
Carbon atoms can be arranged into an _____________ number of
____________ structures: ____________, ___________, and ___________.
Ans: unlimited, hydrocarbon, linear, branched, cyclic
Organic single-bonded carbon atoms in a molecular framework can
be _________ based based upon the number of other _________
atoms they are attached to. Ans: classified, carbon
In a C-C non-cyclic, single bonded hydrocarbon, the number of
hydrogens equals... Ans: 2n + 2 (where n equals the number of
carbons)
In a C-C cyclic, single bonded hydrocarbon, the number of
hydrogens equals... Ans: 2n (where n equals the number of
carbons)
© 2025 All rights reserved
, 2 | Page
A repeating, predictable bonding pattern of C, H, N, and/or O
atoms seen repeatedly and consistently in all organic and
biochemical molecules. Ans: Functional group
An organic molecule consisting of only carbon and hydrogen
atoms. Ans: hydrocarbon
typified by carbon-carbon single bonds Ans: alkane
typified by carbon-carbon double bonds Ans: alkene
typified by carbon-carbon triple bonds Ans: alkyne
typified by a cyclic structure with alternating carbon-carbon single
bonds and double bonds Ans: phenyl
typified by an Oxygen atom flanked on one side by a H and the
other by a hydrocarbon carbon Ans: alcohol
typified by an Oxygen atom flanked by two hydrocarbon carbons
Ans: ether
typified by a Nitrogen atom flanked by a hydrocarbon carbon Ans:
amine
Five functional groups are related by the existence of a... Ans:
carbonyl group (C=O)
typified by a Carbonyl flanked on one side by a H and the other by
a hydrocarbon carbon Ans: aldehyde
typified by a Carbonyl flanked by two hydrocarbon carbons Ans:
ketone
typified by a Carbonyl flanked on one side by a Nitrogen and the
other by a hydrocarbon carbon Ans: amide
typified by a Carbonyl flanked on one side by a hydroxyl and the
other by a hydrocarbon carbon Ans: carboxylic acid
typified by a Carbonyl flanked on one side by a O-R and the other
by a hydrocarbon carbon Ans: ester
A halogen atom single-bonded to a hydrocarbon-type carbon Ans:
halide functional group
© 2025 All rights reserved
