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WorksheetsYr8 Biology Revision
Total questions: 30
Worksheet time: 19mins
Which nutrient is the main one which provides us with energy?
proteins
carbohydrates
fats
vitamins and minerals
Which nutrient is needed for growth and repair?
proteins
carbohydrates
fats
vitamins and minerals
Which nutrient provides us with energy but is also used in some animals for insulation?
proteins
carbohydrates
fats (lipids)
vitamins and minerals
Which nutrients are needed to keep us healthy?
proteins
carbohydrates
fats (lipids)
vitamins and minerals
Which nutrient provides bulk to our food to help keep it moving through the gut?
proteins
carbohydrates
fibre
vitamins and minerals
Why is water an important part of a healthy diet?
it stops us from getting hot
it keeps us hydrated
it keeps us dehydrated
it makes us thirsty
What is the positive test for protein?
Add biuret solution and see a lilac colour change
Add ethanol and see a cloudy layer form
Add Benedict's solution and heat, and see a brick red colour change
Add starch and see a blue/black colour change
What is the positive test for lipids?
Add biuret solution and see a lilac colour change
Add ethanol and see a cloudy layer form
Add Benedict's solution and heat, and see a brick red colour change
Add starch and see a blue/black colour change
What is the positive test for starch?
Add biuret solution and see a lilac colour change
Add ethanol and see a cloudy layer form
Add Benedict's solution and heat, and see a brick red colour change
Add iodine and see a blue/black colour change
Where does digestion start?
small intestine
stomach
mouth
large intestine
Where in the body are nutrients absorbed into the bloodstream
stomach
small intestine
large intestine
gullet
Where in the digestive system is water absorbed back into the body?
stomach
small intestine
large intestine
gullet
Protease is the enzyme that breaks down proteins into...
lipids
amino acids
carbohydrates
sugars
Lipase is the enzyme that breaks down fats into...
lipids
amino acids
fatty acids and glycerol
sugars
Carbohydrase is the enzyme that breaks down carbohydrates into...
lipids
amino acids
fatty acids and glycerol
sugars
What are alleles?
Long strands of DNA that contain lots of genes.
Different versions of a gene.
The basic unit of heredity; controls a specific trait.
A characteristic passed from parent to offspring
The differences that occur from a mixture of genes
What is an inherited trait?
Long strands of DNA that contain lots of genes.
Different versions of a gene.
The basic unit of heredity; controls a specific trait.
A characteristic passed from parent to offspring
The differences that occur from a mixture of genes
A Punnett square showing the cross between two pea plants is shown. In pea plants, the smooth coat allele is (R) the wrinkled coat allele is (r). Which is the dominant allele?
smooth coat (R)
wrinkled coat (r)
What percent of offspring will have the recessive phenotype?
25
50
75
100
Where in the cell does
aerobic respiration take place?
