Section 2 Quizzes Flashcards
Which is an example of a fibrous protein?
A. ribonuclease
B. hemoglobin
C. collagen
D. typsin
C. collagen
(T/F) Conjugated proteins can use metals to perform chemical reactions.
true
There are four parts to each amino acid: (1) a carbon bonded to a hydrogen atom, (2) functional group (R), (3)_______________________ and
(4)_________________________
- amino group
- carboxyl group
What are the three main classes of amino acids?
neutral, acidic, basic
Which amino acid is polar?
A. glycine
B. lysine
C. valine
D. alanine
B. lysine
How many essential amino acids are there?
9
(T/F) Tertiary structure is driven by interactions between backbone carbonyl groups and amide hydrogens.
false
Draw a dipeptide between alanine to glycine (1 pt)
Label each amino acid with one letter abbreviation (2 pts) and circle the peptide bond (1 pt).
check week 6 quiz for answer
The __________________________ structure of a protein is the sequence of amino acids in the protein.
primary
The _______________________ structure of a protein is its folded or functional form of the protein.
tertiary
Which vitamin is fat soluble ?
A. K
B. Folic Acid
C. Antioxidant
D. B12
A. K
If an egg white protein ovalbumin is denatured into a hard boiled egg then which of the following is least affected?
A. the tertiary structure of ovalbumin
B. the quaternary structure of ovalbumin
C. the secondary structure of ovalbumin
D. the primary structure of ovalbumin
D. the primary structure of ovalbumin
Regulation of an enzyme’s activity by the product of the reaction is known as?
feedback control
Which of the following can impact an enzyme’s functioning/activity?
A. pH and temp
B. pH
C. temperature
D. none of the above
A. pH and temp
All are true for enzymes except:
A. Enzymes speed up the rate of a reaction
B. Enzymes may change physically during the reaction
C. Enzymes are biological catalysts
D. Enzymes are made of DNA
D. Enzymes are made of DNA
The type of interaction most likely to occur between an aspartic acid residue and lysine is:
hydrogen bond
Which of these is an enzyme?
A. dextrose
B. NADH
C. catalase
D. pyruvate
C. catalase
definition of aldose
a monosaccharide with an aldehyde group
definition of carbohydrate
member of a large class of polyhydroxy aldehydes and ketones
definition of monosaccharide
carbohydrate with 3-7 carbons
definition of ketose
a monosaccharide that contains a ketone carbonyl group
Why are cofactors needed in many enzyme reactions?
to provide functional groups necessary for a reaction that cannot be provided by amino acid side chains
What is sucrose made up of?
glucose and fructose
(T/F) Cellulose is made of glucose molecules and readily digestible in human.
false
Which Vitamin is water soluble?
1. D
2. A
3. E
4. C
- C
Carbohydrates contain the following elements:
carbon, hydrogen, and oxygen
What disacchraride is made from a glycosidic bond between Galactose and Glucose?
lactose
A condensation reaction between sugars forms this type of bond:
glycosidic bond
The carbohydrate form that is nutritionally useful to plants, animals, and humans is the _______.
D-form
