WorksheetsUnderstanding Proteins and Digestion
Total questions: 35
Worksheet time: 21mins
What are the building blocks of proteins called?
Fatty acids
Amino acids
Nucleotides
Monosaccharides
Which of the following best describes a complete protein?
Contains all essential amino acids
Contains only carbohydrates
Lacks all amino acids
Contains only non-essential amino acids
Which organ is primarily responsible for the digestion of proteins?
Stomach
Large intestine
Pancreas
Esophagus
Which of the following is a function of proteins in the body?
Providing genetic information
Building and repairing tissues
Storing calcium
Producing bile
Which enzyme begins the digestion of protein in the stomach?
Amylase
Pepsin
Lipase
Lactase
Which of the following foods is an example of an incomplete protein?
Chicken breast
Black beans
Eggs
Fish
What is the main role of amino acids in the body?
To store energy
To build proteins
To provide insulation
To transport oxygen
Which of the following is a plant-based source of protein?
Tofu
Salmon
Milk
Chicken
What happens to proteins during digestion?
They are converted into fats
They are broken down into amino acids
They are stored as glycogen
They are absorbed whole
Which of the following best describes the structure of a protein?
A chain of amino acids
A ring of fatty acids
A double helix of nucleotides
A chain of glucose molecules
How many essential amino acids are there in the human diet?
5
9
12
20
How many total amino acids are commonly found in proteins?
8
12
20
24
Why are some proteins called "incomplete"?
They are not digested in the stomach
They lack one or more essential amino acids
They are only found in animal products
They contain only carbohydrates
How can a vegetarian ensure they get all essential amino acids in their diet?
By eating only fruits
By combining different plant protein sources
By avoiding all grains
By eating only dairy products
What is a complementary protein?
A protein that is only found in animal products
A combination of two or more incomplete protein sources that together provide all essential amino acids
A protein that contains only non-essential amino acids
A protein that is not digested
What is the role of enzymes in protein digestion?
They store proteins
They break down proteins into amino acids
They transport proteins in the blood
They convert proteins into fats
Which combination of foods would provide a complete protein for someone who does not eat meat?
Rice and beans
Apples and oranges
Bread and butter
Lettuce and tomatoes
Why is it important to consume essential amino acids through the diet?
The body cannot produce them
They are only found in fats
They are stored in the liver
They are produced by the pancreas
Which process occurs first during the digestion of dietary proteins?
Absorption in the small intestine
Breakdown by stomach acid and enzymes
Storage in the liver
Conversion to glucose
How does the body use amino acids after protein digestion?
To build new proteins needed for growth and repair
To store as fat
To produce bile
To make vitamins
Which of the following best explains why animal proteins are usually considered complete?
They contain all essential amino acids in sufficient amounts
They are easier to digest than plant proteins
They have more carbohydrates
They are always low in fat
If a person eats only corn as their protein source, what is a likely nutritional consequence?
They will get all essential amino acids
They may lack some essential amino acids
They will have too much protein
They will not digest any protein
What is the main difference between complete and incomplete proteins?
Complete proteins contain all essential amino acids; incomplete do not
Complete proteins are only found in plants
Incomplete proteins are only found in animals
Incomplete proteins have more calories
A student wants to design a meal plan that provides all essential amino acids without using animal products. What should they consider when planning their meals?
Combining different plant protein sources such as grains and legumes
Eating only fruits and vegetables
Avoiding all protein-rich foods
Consuming only dairy products
Explain why enzymes are necessary for the digestion of proteins.
Proteins are large molecules that need to be broken down into smaller units for absorption
Enzymes store proteins in the body
Enzymes convert proteins into carbohydrates
Proteins can be absorbed whole without enzymes
A person is not getting enough essential amino acids in their diet. What might be a possible effect on their health?
Poor growth and tissue repair
Increased energy levels
Improved digestion
Excess fat storage
If a person is lactose intolerant and avoids dairy, which plant-based foods could they combine to get a complete protein?
Rice and lentils
Apples and carrots
Potatoes and lettuce
Bananas and grapes
A student claims that eating only one type of vegetable will provide all the protein their body needs. Use your knowledge of protein types to evaluate this claim.
Most vegetables are incomplete proteins and do not provide all essential amino acids
All vegetables are complete proteins
Vegetables do not contain any protein
One vegetable is enough for all protein needs
Describe how the body processes dietary protein from ingestion to absorption.
Proteins are broken down by stomach acid and enzymes into amino acids, which are then absorbed in the small intestine
Proteins are absorbed whole in the stomach
Proteins are converted to glucose in the mouth
Proteins are stored in the liver before digestion
A person is recovering from an injury and needs to repair body tissues. Which dietary change would best support their recovery?
Increase intake of complete proteins to provide all essential amino acids for tissue repair
Eat more simple sugars
Avoid all protein sources
Only drink water
How many calories are in one gram of protein?
(a)
What percent of daily calories should come from protein?
10-30%
20-40%
45-60%
Unlimited
Click all that apply:
Which are plant based Protein Foods
Chicken
Chickpeas
Chia Seeds
Beef
Lentils
(a) are organic compounds that are made of one or more chains of amino acids and that is a principal component of all cells.
Using all the information you know about carbohydrates, fat, and protein, what is the best source of protein for someone who suffers from heart disease? Explain why you choose that source.
