KS1 (Age 5-7)KS2 (Age 7-11)11 Plus (Age 7-11)KS3 (Age 11-14)GCSE (Age 14-17)PSHE A.I.ESL Spanish Specialist Games

Need help with Unit 2 - Proteins? Ask our AI Tutor!

AI Tutor - Lucy

Connecting with Tutor...

Please wait while we establish connection

Hi! I'm Lucy, your AI tutor. How can I help you with Unit 2 - Proteins today?

now

Haemoglobin is a protein which carries oxygen and is found in the red blood cells.

Unit 2 - Proteins

This GCSE Biology quiz on proteins revises how amino acids join, how protein structure links to function, and why enzymes and antibodies are vital in living organisms.

Explore the Topic →

(quiz starts below)

Fascinating Fact:

Antibodies are protein molecules made by white blood cells, and they help defend the body against specific pathogens.

In GCSE Biology, proteins are large molecules built from chains of amino acids. You study how their shapes relate to function, from enzymes that catalyse reactions to antibodies that support immunity.

Key Terms

Protein: A large molecule made from long chains of amino acids, with a specific shape that allows it to carry out a particular function.
Amino acid: A small molecule that joins with others in a chain to form a protein.
Enzyme: A biological catalyst made of protein that speeds up chemical reactions in cells without being used up.

Frequently Asked Questions (Click to see answers)

What are proteins in GCSE Biology?

In GCSE Biology, proteins are large molecules made from chains of amino acids. Their specific shapes allow them to work as enzymes, antibodies, hormones, or structural components.

What are some examples of proteins and their functions?

Examples include enzymes that speed up digestion, antibodies that help defend against pathogens, haemoglobin that carries oxygen in red blood cells, and collagen that provides structural support.

How are proteins made from amino acids in cells?

Proteins are made when ribosomes join amino acids together in a specific order, using instructions from the gene sequence in DNA. The chain then folds into a particular shape.

Try These Related Quizzes

1 .

Some proteins ensure the function of which type of tissue?

Fat

Muscle

Lung

Bladder

Muscle tissue consists of protein filaments which can cause contraction and relaxation of your muscles

2 .

Enzymes are a special type of...

fat

starch

vitamin

protein

They work using what is called a lock and key mechanism

3 .

Proteins consist of chains of...

fatty acids

amino acids

cholesterol

carboxylic acid

When proteins are digested by protease, amino acids are released

4 .

Which special proteins are released by white blood cells when a pathogen is invading your body?

Antibodies

Antidote

Antisense

Antihistamines

Antibodies have a special shape which can join to specific molecules on the surface of pathogens and help to destroy them

5 .

Enzymes are biological...

hormones

messengers

catalysts

nutrients

They speed up chemical reactions

6 .

Proteins are damaged by high...

concentration

temperature

moisture

wind

All proteins, including enzymes, are denatured or damaged by high temperatures and very low or very high pH

7 .

Some hormones are proteins. Which of the following is an example of a hormone which is a protein?

Adrenaline

Acetylcholine

Vitamin C

Insulin

Both insulin and glucagon are hormones made from protein

8 .

Which chemical reagent is used to test for proteins?

Benedicts

Burette

Biuret

Bleach

An unknown sample is mixed with biuret reagent and the colour changes from blue to purple if a protein is present

9 .

Haemoglobin is a protein which carries oxygen and is found in the...

white blood cells

memory cells

red blood cells

platelets

A lack of red blood cells or haemoglobin in the body is known as anaemia

10 .

The amino acid chain can be folded into a special...

size

shape

knot

branch

This special shape allows the protein to join with another molecule in order to do its job

You can find more about this topic by visiting BBC Bitesize - Reproduction, the genome and gene expression

Author: Donna Davidson (GCSE Biology Teacher & Examiner, Quiz Writer)

**Unlimited Quizzes Await You! 🚀**

Hey there, quiz champ! 🌟 You've already tackled today's free questions.
Ready for more?

🔓 Unlock UNLIMITED Quizzes and challenge yourself every day. But that's
not all...

🔥 As a Subscriber you can join our thrilling "Daily Streak" against other
quizzers. Try to win a coveted spot on our Hall of Fame Page.

Don't miss out! Join us now and keep the fun rolling. 🎉

Subscribe & Play

**Unlimited Quizzes Await You! 🚀**

Hey there, quiz champ! 🌟 You've already tackled today's free questions. Ready for more?

🔓 Unlock UNLIMITED Quizzes and challenge yourself every day. But that's not all...

🔥 As a Subscriber you can join our thrilling "Daily Streak" against other quizzers. Try to win a coveted spot on our Hall of Fame Page.

Don't miss out! Join us now and keep the fun rolling. 🎉

Subscribe & Play

Leave Feedback