Font size
WorksheetsBio Revision Q2 (Biological Molecules)
Total questions: 24
Worksheet time: 12mins
What type of molecule contains glycerol?
simple carbohydrate
fat
complex carbohydrate
protein
What type of molecule contains amino acids?
simple carbohydrate
fat
complex carbohydrate
protein
What type of molecule is an enzyme?
simple carbohydrate
fat
complex carbohydrate
protein
Select all types of molecule which are used as energy store molecules
starch
fat
protein
glucose
Select all types of molecule which are used as energy store molecules
starch
fat
protein
glucose
Proteins can be structural. Select the structural protein from this list
amylase (an enzyme in the mouth)
insulin ( a hormone in the blood)
collagen ( a protein to strengthen skin)
glycogen (a store of glucose in the muscle)
The diagram shows the structure of something called a triglyceride. A triglyceride is a
fat
protein
carbohydrate
sugar
Glycogen is an example of
a fat
a protein
a complex carbohydrate
none of these
If the yellow and blue circles in this diagram represent amino acids, then this whole structure represents
a protein
a fat
a reducing sugar
a simple carbohydrate
None of these
Select the TRUE statement below
Glucose and Lactose are complex carbohydrates
Glucose and Glycogen are simple carbohydrates
Glycogen and Lactose are complex carbohydrates
Glucose and Lactose are simple carbohydrates
Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?
Amino acids are basic units of carbohydrates.
Fatty acids are basic units of glycogen.
Glycerol is a basic unit of oils.
Simple sugar is a basic unit of protein.
The diagram shows part of a protein molecule. What does X represent?
amino acid
fatty acid
glycerol
sugar
The diagram represents a protein molecule. What do the small circles represent?
amino acids
fatty acids
glycerol
simple sugars
Which nutrient produces a purple colour when mixed with biuret solution?
fat
protein
reducing sugar
starch
Which food-testing reagent shows a positive result when it turns from blue to purple?
Benedict’s solution
biuret reagent
ethanol
iodine solution
The diagram shows two food tests carried out on solution X. Which nutrients are present in solution X?
protein and starch
protein and sugar
starch and fat
starch and sugar
The graphs show the quantities of selected vitamins and mineral ions in four foods. Which food is the richest source of the vitamin or mineral ions essential for the transport of oxygen by the blood?
beans
egg
fish
fruit
A student set up a test-tube containing starch, water and amylase. How could the student test whether the amylase had digested all the starch?
Add Biuret solution.
Add dilute hydrochloric acid.
Add iodine solution.
Weigh the test-tubes and contents before and after the experiment.
Which pair of substances is transported in the phloem?
amino acids and protein
amino acids and sucrose
protein and starch
starch and sucrose
Water is a good solvent. What does this mean?
It dissolves well in many other substances.
It flows easily through vessels.
It is permeable to gases.
Many substances dissolve well in it.
What does the digestion of starch produce?
fatty acids
glucose
mineral salts
water
Which of these is not a type of lipid?
Steroid hormone
Glucose
Phospholipid
Triglyceride
Haemoglobin is an example of a...
Carbohydrate
Protein
Lipid
Which of these is a lipid?
