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Basic Biochemistry Trivia Quiz

Here's some basic biochemistry, dealing with carbohydrates, proteins, and lipids.

A multiple-choice quiz by Cher40. Estimated time: 3 mins.

Author
Cher40

Time
3 mins

Type
Multiple Choice

Quiz #
268,802

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
7 / 10

Plays
9313

Awards
Top 35% Quiz

Last 3 plays: Guest 93 (6/10), Froya (5/10), JulzD24 (10/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is an example of a 5-carbon sugar? Hint

Glucose

Sucrose

Fructose

Ribose

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Question 2 of 10

2. Of what elements are carbohydrates composed? Hint

C, H, O & N

C, H, & O

C, H & N

C, H, O & S

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Question 3 of 10

3. What is a long chain of sugar molecules? Hint

Lipid

Polypeptide

Polysaccharide

Protein

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Question 4 of 10

4. What is the principal carbohydrate storage product in animals? Hint

Cellulose

Glycogen

Starch

Protein

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Question 5 of 10

5. What molecules are the building blocks of proteins? Hint

Sugars

Disaccharides

Fatty acids

Amino acids

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Question 6 of 10

6. What is the name for 2 amino acids bonded together? Hint

Dipeptide

Protein

Disaccharide

Alanine

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Question 7 of 10

7. What is the protein found in human hair and finger nails, as well as in hooves, horns, wool, claws, bird beaks, and spider webs? Hint

Collagen

Glycogen

Cellulite

Keratin

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Question 8 of 10

8. Of what is a triglyceride composed? Hint

3 glycerol with a fatty acid

3 fatty acids

3 glycerides

One glycerol with 3 fatty acids

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Question 9 of 10

9. Why is a saturated fat called a "saturated" fat? Hint

The fat is saturated with water.

The fatty acid carbon chains are saturated with hydrogen.

The fatty acid chains can have more water added.

They saturate the body with fat when eaten.

NEXT>

Question 10 of 10

10. Of what elements are triglycerides composed? Hint

C, H, O & N

C, H, O, N & S

C, H & N

C, H & O

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Dec 21 2024 : Guest 93: 6/10
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Quiz Answer Key and Fun Facts

1. What is an example of a 5-carbon sugar?

Answer: Ribose

Glucose and fructose are both 6-carbon sugars, while sucrose is glucose and fructose bonded together. Ribose is the sugar in RNA.

2. Of what elements are carbohydrates composed?

Answer: C, H, & O

Carbohydrates are composed of carbon, hydrogen, and oxygen atoms. Proteins are composed primarily of carbon, hydrogen, oxygen, as well as nitrogen.

3. What is a long chain of sugar molecules?

Answer: Polysaccharide

Polysaccharides are long chains of simple sugars bonded together including starch, glycogen and cellulose. Polypeptides and proteins are long chains of amino acids. Lipids are substances like fats.

4. What is the principal carbohydrate storage product in animals?

Answer: Glycogen

Glycogen is stored in the liver and muscles. Cellulose is common in plants as supporting material. Starch is a carbohydrate storage product in plants. Proteins are not carbohydrates.

5. What molecules are the building blocks of proteins?

Answer: Amino acids

Proteins are formed with amino acids bonded together. Sugars and disaccharides are carbohydrates. Fatty acids are lipids.

6. What is the name for 2 amino acids bonded together?

Answer: Dipeptide

A dipeptide is two amino acids bonded together while a disaccharide is two sugars bonded together. Proteins are long chains of amino acids, and alanine is a simple amino acid.

7. What is the protein found in human hair and finger nails, as well as in hooves, horns, wool, claws, bird beaks, and spider webs?

Answer: Keratin

Keratin is also found in bird and reptile scales. Collagen is found in skin, tendons, and ligaments. Glycogen is a carbohydrate. Cellulite is "cottage-cheese" skin.

8. Of what is a triglyceride composed?

Answer: One glycerol with 3 fatty acids

A triglyceride is a 3-carbon glycerol or glyceride molecule that has three fatty acid chains attached to it, one chain to each of the glycerol's three carbons.

9. Why is a saturated fat called a "saturated" fat?

Answer: The fatty acid carbon chains are saturated with hydrogen.

Each carbon in the fatty acid chain is bonded to the maximum number of hydrogen atoms, and is said to be saturated with hydrogen. Unsaturated fatty acids have carbon-carbon double bonds which can be broken to add more hydrogen.

10. Of what elements are triglycerides composed?

Answer: C, H & O

Carbohydrates and the lipids known as triglycerides are composed of carbon, hydrogen, and oxygen atoms. Proteins are composed primarily of carbon, hydrogen, oxygen, as well as nitrogen.

Source: Author Cher40

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