NSC-350 Exam 2 GCU 2024/2025 Exam
Questions and Verified Answers |
Already Graded A+
Structure of Protein - 🧠ANSWER ✔✔carbon, hydrogen, oxygen, nitrogen,
and sometimes sulfur
-may also contain iron, copper, phosphorus, or zinc
Amino acids - 🧠ANSWER ✔✔a simple organic compound containing a side
chain of carbon and hydrogen atoms, a carboxyl (—COOH) and an amine
(—NH2) group.
In a protein the carboxyl group acts as an? - 🧠ANSWER ✔✔acid
In a protein the amine group acts as a? - 🧠ANSWER ✔✔base
What happens when 2 amino acids combine - 🧠ANSWER ✔✔a peptide
bond is formed and water is released
What is a polypeptide? - 🧠ANSWER ✔✔a chain of amino acids bound
together by peptide bonds
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,What are proteins classified by - 🧠ANSWER ✔✔nutritional use and
chemical nature of their side chains
How are proteins classified by nutritional use - 🧠ANSWER ✔✔-20 amino
acids needed by body fro growth and body function
-dispensable (nonessential) amino acids
-indispensable (essential) amino acids
Indispensable amino acids - 🧠ANSWER ✔✔9 essential amino acids that
are not made by the body and must be supplied by the diet
Conditional indispensable amino acids - 🧠ANSWER ✔✔conditionally
essential
Complete proteins - 🧠ANSWER ✔✔contain all the indispensable amino
acids
incomplete proteins - 🧠ANSWER ✔✔short one or more of the essential
amino acids
-combining incomplete proteins, such as red beans and rice form a
complete protein
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
,Classification by side chains - 🧠ANSWER ✔✔-the shape and function of
protein depend on the polarity of the side chains
Side chains can be - 🧠ANSWER ✔✔nonpolar, uncharged polar, positively
charged, or negatively charged
Nonpolar side chain - 🧠ANSWER ✔✔less soluble in water and are
attracted to other nonpolar compounds, such as lipids and cholesterol
amino acids with neutral polar side chains will? - 🧠ANSWER ✔✔form
hydrogen bonds and are attracted to other polar molecules, such as water
positively and negatively charged side chains - 🧠ANSWER ✔✔enable
some proteins to act as buffers
Proteins are complex molecules because of the? - 🧠ANSWER ✔✔-number
of amino acids
-order in which they combine
-interaction of the side chains
Primary structure - 🧠ANSWER ✔✔order the amino acids occur in the chain
-results from the chain of peptide bonds
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
, secondary structure - 🧠ANSWER ✔✔refers to the shape of the sections of
the amino acid
helix - 🧠ANSWER ✔✔repeating coil
random coil - 🧠ANSWER ✔✔is tangled and twisted
pleated sheet - 🧠ANSWER ✔✔like a paper fan
Tertiary structure - 🧠ANSWER ✔✔-the 3-dimensional structure of an entire
amino acid chain
-globular proteins do not form networks
-fibrous proteins are usually made from helix-shaped strands, are strong
and elastic, and form networks
Molecular interactions of proteins - 🧠ANSWER ✔✔a hydrogen bond can
form between hydrogen atom of one side chain and hydroxyl group of
another
disulfide cross-links - 🧠ANSWER ✔✔covalent bonds between 2 protein
molecules at side chains containing sulfur
the more disulfide bonds - 🧠ANSWER ✔✔the more stable the molecule
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
Questions and Verified Answers |
Already Graded A+
Structure of Protein - 🧠ANSWER ✔✔carbon, hydrogen, oxygen, nitrogen,
and sometimes sulfur
-may also contain iron, copper, phosphorus, or zinc
Amino acids - 🧠ANSWER ✔✔a simple organic compound containing a side
chain of carbon and hydrogen atoms, a carboxyl (—COOH) and an amine
(—NH2) group.
In a protein the carboxyl group acts as an? - 🧠ANSWER ✔✔acid
In a protein the amine group acts as a? - 🧠ANSWER ✔✔base
What happens when 2 amino acids combine - 🧠ANSWER ✔✔a peptide
bond is formed and water is released
What is a polypeptide? - 🧠ANSWER ✔✔a chain of amino acids bound
together by peptide bonds
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,What are proteins classified by - 🧠ANSWER ✔✔nutritional use and
chemical nature of their side chains
How are proteins classified by nutritional use - 🧠ANSWER ✔✔-20 amino
acids needed by body fro growth and body function
-dispensable (nonessential) amino acids
-indispensable (essential) amino acids
Indispensable amino acids - 🧠ANSWER ✔✔9 essential amino acids that
are not made by the body and must be supplied by the diet
Conditional indispensable amino acids - 🧠ANSWER ✔✔conditionally
essential
Complete proteins - 🧠ANSWER ✔✔contain all the indispensable amino
acids
incomplete proteins - 🧠ANSWER ✔✔short one or more of the essential
amino acids
-combining incomplete proteins, such as red beans and rice form a
complete protein
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
,Classification by side chains - 🧠ANSWER ✔✔-the shape and function of
protein depend on the polarity of the side chains
Side chains can be - 🧠ANSWER ✔✔nonpolar, uncharged polar, positively
charged, or negatively charged
Nonpolar side chain - 🧠ANSWER ✔✔less soluble in water and are
attracted to other nonpolar compounds, such as lipids and cholesterol
amino acids with neutral polar side chains will? - 🧠ANSWER ✔✔form
hydrogen bonds and are attracted to other polar molecules, such as water
positively and negatively charged side chains - 🧠ANSWER ✔✔enable
some proteins to act as buffers
Proteins are complex molecules because of the? - 🧠ANSWER ✔✔-number
of amino acids
-order in which they combine
-interaction of the side chains
Primary structure - 🧠ANSWER ✔✔order the amino acids occur in the chain
-results from the chain of peptide bonds
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
, secondary structure - 🧠ANSWER ✔✔refers to the shape of the sections of
the amino acid
helix - 🧠ANSWER ✔✔repeating coil
random coil - 🧠ANSWER ✔✔is tangled and twisted
pleated sheet - 🧠ANSWER ✔✔like a paper fan
Tertiary structure - 🧠ANSWER ✔✔-the 3-dimensional structure of an entire
amino acid chain
-globular proteins do not form networks
-fibrous proteins are usually made from helix-shaped strands, are strong
and elastic, and form networks
Molecular interactions of proteins - 🧠ANSWER ✔✔a hydrogen bond can
form between hydrogen atom of one side chain and hydroxyl group of
another
disulfide cross-links - 🧠ANSWER ✔✔covalent bonds between 2 protein
molecules at side chains containing sulfur
the more disulfide bonds - 🧠ANSWER ✔✔the more stable the molecule
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
