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Year 8 in England

7th grade human body and health

10 7th grade human body and health skills, each with a worked example, free practice that checks every answer, and a printable worksheet. Start with a mixed review, or jump to the skill you need.

Mixed review

Ten questions drawn from every skill below.

Print a review worksheetRiddle puzzle on screenBingo

Breathing, gas exchange and respiration

CCSS NGSS.MS-LS1-7CCSS NGSS.HS-LS1-7England: KS3 Biology: Gas exchange systemsEngland: KS3 Biology: Cellular respirationEngland: KS4 Combined Science: Cell biology

Example

Where does gas exchange happen in the lungs?

  1. Oxygen diffuses from the alveoli into the blood, and carbon dioxide diffuses out.
  2. So the answer is: in the alveoli (air sacs)

Answer: in the alveoli (air sacs)

Builds on: Heart, blood and circulation

Leads to: Respiration without oxygen: muscles and yeast

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Cells, tissues, organs and organ systems

CCSS NGSS.MS-LS1-3CCSS NGSS.HS-LS1-2England: KS3 Biology: Cells and organisationEngland: KS4 Combined Science: Cell biology

Example

Which organ system includes this part: bronchi?

  1. The respiratory system exchanges gases with the air.
  2. So the answer is: respiratory system

Answer: respiratory system

Builds on: Major organs and their jobs

Leads to: Nervous system, reflexes and hormones

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Trace a meal through the digestive system

CCSS NGSS.MS-LS1-3England: KS3 Biology: Nutrition and digestionEngland: GCSE Combined Science: Organisation

Example

What pushes food along the oesophagus (esophagus), even if you are upside down?

  1. Peristalsis is muscle squeezing that moves food along the gut.
  2. So the answer is: waves of muscle contraction (peristalsis)

Answer: waves of muscle contraction (peristalsis)

Builds on: The digestive system, Human organ systems and how they work together

Leads to: Digestive enzymes and the molecules they make

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Digestive enzymes and the molecules they make

CCSS NGSS.MS-LS1-3CCSS NGSS.HS-LS1-6England: KS3 Biology: Nutrition and digestionEngland: GCSE Combined Science: Organisation

Example

Which enzyme is described here: breaks fats down into fatty acids and glycerol?

  1. Lipase breaks lipids into fatty acids and glycerol.
  2. So the answer is: lipase

Answer: lipase

Builds on: Trace a meal through the digestive system, Food groups, nutrients and what each one does

Leads to: How enzymes work: active sites, temperature and pH

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Test foods for starch, sugar, protein and fat

CCSS NGSS.MS-LS1-7CCSS NGSS.SEP 3England: KS3 Biology: Nutrition and digestionEngland: GCSE Combined Science: Organisation (required practical: food tests)

Example

A food sample gives this result: iodine turns blue-black. Which nutrient is present?

  1. Iodine solution turns from orange-brown to blue-black with starch.
  2. So the answer is: starch

Answer: starch

Builds on: Food groups, nutrients and what each one does

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Follow blood through the heart and lungs

CCSS NGSS.MS-LS1-3England: KS3 Biology: Gas exchange systemsEngland: GCSE Combined Science: Organisation

Example

Following blood from the lungs to the body: where does blood go straight after the lungs?

  1. lungs → pulmonary vein → left atrium → left ventricle → aorta
  2. So the answer is: pulmonary vein

Answer: pulmonary vein

Builds on: Heart, blood and circulation

Leads to: Heart rate, stroke volume and cardiac output

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Arteries, veins and capillaries compared

CCSS NGSS.MS-LS1-3England: GCSE Combined Science: OrganisationEngland: KS3 Biology: Gas exchange systems

Example

Which type of blood vessel: wide space inside and thin walls?

  1. Veins return blood to the heart at low pressure; they have thin walls, a wide lumen and valves.
  2. So the answer is: vein

Answer: vein

Builds on: Heart, blood and circulation

Leads to: Plasma, red cells, white cells and platelets

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Plasma, red cells, white cells and platelets

CCSS NGSS.MS-LS1-3England: GCSE Combined Science: Organisation

Example

Which part of the blood is described here: help blood to clot at a cut?

  1. Platelets are cell fragments that help blood clot.
  2. So the answer is: platelets

Answer: platelets

Builds on: Arteries, veins and capillaries compared

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Skeleton jobs, joints and muscle pairs

CCSS NGSS.MS-LS1-3England: KS3 Biology: The skeletal and muscular systems

Example

You bend your knee to lift your foot behind you. What do the hamstrings and quadriceps do?

  1. In an antagonistic pair, when one muscle contracts the other relaxes.
  2. So the answer is: hamstrings contract, quadriceps relax

Answer: hamstrings contract, quadriceps relax

Builds on: Skeleton and muscles

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Respiration without oxygen: muscles and yeast

CCSS NGSS.MS-LS1-7CCSS NGSS.HS-LS1-7England: KS3 Biology: Cellular respirationEngland: GCSE Combined Science: Bioenergetics

Example

Which word equation shows the respiration happening here: muscles doing hard exercise with too little oxygen?

  1. In muscles without enough oxygen, glucose is turned into lactic acid.
  2. So the answer is: glucose → lactic acid

Answer: glucose → lactic acid

Builds on: Breathing, gas exchange and respiration

Leads to: Aerobic and anaerobic respiration equations compared

Print a worksheet✏️ Write on screenFlashcards

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