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

Proteins

This Biology quiz is called 'Proteins' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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Proteins, the amino acid chains which are vital to all living organisms, are one of the topics looked at in middle school Biology. Their structure, their function and their many types are just some of the things we look at in this quiz. Proteins are polymers that consist of amino acid chains and they have a wide variety of functions in living organisms.

1.
Proteins consist of chains of...
fatty acids
amino acids
cholesterol
carboxylic acid
When proteins are digested by protease, amino acids are released
2.
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
3.
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
4.
Hemoglobin 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 hemoglobin in the body is known as anemia
5.
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
6.
Enzymes are a special type of...
fat
starch
vitamin
protein
They work using what is called a lock and key mechanism
7.
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
8.
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
9.
Enzymes are biological...
hormones
messengers
catalysts
nutrients
They speed up chemical reactions
10.
Which chemical reagent is used to test for proteins?
Benedicts
Burette
Biuret
Bleach
An unknown sample is mixed with biuret reagent and the color changes from blue to purple if a protein is present
Author:  Donna Maria Davidson

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