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Biochemistry Trivia Quiz

You find in this particular quiz questions on the very interesting and fun area of biochemistry. Most of the questions are on proteins, since they are in my opinion the most interesting.

A multiple-choice quiz by knight7se7en. Estimated time: 6 mins.

Author
knight7se7en

Time
6 mins

Type
Multiple Choice

Quiz #
148,843

Updated
Dec 03 21

# Qns
10

Difficulty
Difficult

Avg Score
5 / 10

Plays
7793

Last 3 plays: Sethdv7 (10/10), Guest 124 (4/10), Crowphale (4/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Which one of these macromolecules is the most complex of all macromolecules? Hint

lipids

proteins

carbohydrates

nucleic acids

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Question 2 of 10

2. What is the only macromolecule whose monomers don't undergo dehydration to become long-chain polymers? Hint

proteins

lipids

nucleic acids

carbohydrates

NEXT>

Question 3 of 10

3. Give the single letter notation for any one of the polar neutral amino acids.

Answer: (One Letter)

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Question 4 of 10

4. True Or False: A glycoprotein is mostly carbohydrate, and has very little protein.

True

False

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Question 5 of 10

5. What enzyme do cows have that allows them to digest cellulose? Hint

alpha-amlyase

beta-amylase

beta-hydroxy-beta-methylglutaryl coenzyme A reductase

beta-lactase

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Question 6 of 10

6. What type of non-covalent interaction contributes most to the stabilization of the secondary structure of proteins? Hint

hydrophobic interactions

charge-charge interactions

hydrogen bonding

van der waals forces

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Question 7 of 10

7. Oxidoreductases, isomerases, and lyases are three of the six classes of enzymes.

True

False

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Question 8 of 10

8. Choose the correct description for an enzyme that has its associated coenzyme/cofactor. Hint

Apoenzyme

Hapoenzyme

Aloenzyme

Holoenzyme

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Question 9 of 10

9. True or False: Transition states are the formed structures (which don't include the product) in any given reaction. For example, in reaction A ----> B ----> C, B would be a transition state.

True

False

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Question 10 of 10

10. Name the type of double bond that exists in any normal unsaturated or polyunsaturated fatty acid.

Answer: (one word, three letters)

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Most Recent Scores

Nov 13 2024 : Sethdv7: 10/10
Nov 13 2024 : Guest 124: 4/10
Oct 27 2024 : Crowphale: 4/10
Oct 17 2024 : Guest 172: 2/10
Sep 22 2024 : Guest 103: 4/10

Score Distribution

Quiz Answer Key and Fun Facts

1. Which one of these macromolecules is the most complex of all macromolecules?

Answer: proteins

Carbohydrates are the most abundant, nucleic acids are the largest, and lipids are the most diverse.

2. What is the only macromolecule whose monomers don't undergo dehydration to become long-chain polymers?

Answer: lipids

Lipids hold the distinction of having monomers called fatty acids that aggregate into fats, composed of three fatty acids and a glycerol molecule. CHO's, proteins and NA's all lose a water molecule to form a disaccharide/dipeptide/DNA molecules.

3. Give the single letter notation for any one of the polar neutral amino acids.

Answer: S

The polar neutral amino acids are Serine (Ser, S), Threonine (Thr, T), Tyrosine (Tyr, Y), Cysteine (Cys, C), Glutamine (Glu, Q), and Asparagine (Asp, N).

4. True Or False: A glycoprotein is mostly carbohydrate, and has very little protein.

Answer: False

A proteoglycan is mostly carbohydrate, and has very little protein. A glycoprotein is mostly protein, and has very little carbohydrate.

5. What enzyme do cows have that allows them to digest cellulose?

Answer: beta-amylase

Humans only possess alpha amylase, which can't break down cellulose (because it has a beta 1-4 linkage). This is why when we ate grass as children (if you attempted to anyways) it passed straight through your system and out, eventually into the toilet.

6. What type of non-covalent interaction contributes most to the stabilization of the secondary structure of proteins?

Answer: hydrogen bonding

Regardless of whether or not the secondary structure is a beta sheet or alpha helix, the two main portions of the peptide bond (the carbonyl portion and the amino portion) on different amino acids orient themselves so that so that the hydrogen of the amino portion on one amino acid hydrogen bonds to the oxygen of the carbonyl portion of another.

This essentially stabilizes the structure.

7. Oxidoreductases, isomerases, and lyases are three of the six classes of enzymes.

Answer: True

The six classes of enzymes are in order: 1) Oxidoreductases 2) transferases 3) Hydrolases 4) Lysases 5) Isomerases 6) Ligases

8. Choose the correct description for an enzyme that has its associated coenzyme/cofactor.

Answer: Holoenzyme

Enzymes with their associated cofactor/coenzymes are called holoenzymes, and enzymes without their associated cofactor/coenzymes are called apoenzymes.

9. True or False: Transition states are the formed structures (which don't include the product) in any given reaction. For example, in reaction A ----> B ----> C, B would be a transition state.

Answer: False

Transition states are actually the structures that exist for a very small period of time in between two intermediates (which are formed structures in a reaction pathway), the reactant and an intermediate or an intermediate and a product.

10. Name the type of double bond that exists in any normal unsaturated or polyunsaturated fatty acid.

Answer: cis

Source: Author knight7se7en

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