Biology Revision Grade 7 | Baamboozle - Baamboozle

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Biology

Study Slideshow

What is photosynthesis?

Photosynthesis is the way that plants make food using energy from light.

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What is the word equation for photosynthesis?

Carbon dioxide + water = glucose and oxygen

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What is biomass?

Materials that are made up of living cells and tissues.

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Why are plants green?

Because they contain a green pigment called chlorophyll, which captures energy from light.

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What are 3 functions of roots?

1. they absorb water and minerals from soil; 2. they anchor the plant in the ground; 3. some plants store food in their roots.

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What are nutrients?

substances in food that the body uses to provide energy and material for making the chemicals the body needs.

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Which three nutrients provide the body with energy?

Proteins, carbohydrates and fats.

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What is a balanced diet?

a diet that provides all the different kinds of nutrients and the right amount of energy.

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What is digestion?

Digestion is the breakdown of large molecules into small ones, so that they can be absorbed

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What is absorption?

Absorption is the movement of nutrient molecules from the alimentary canal into the blood.

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What are the two types of blood vessels in the circulatory system?

Veins and Arteries.

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Why are red blood cells red?

Red blood cells contain a red pigment called hemoglobin.

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What are antibodies?

Special molecules produced by white blood cells that attach to bacteria and kill them.

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What is gas exchange?

oxygen passing from the air into the blood, and carbon dioxide passing out of the blood into the air.

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In what organ does gaseous exchange happen?

the lungs

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What is respiration?

a chemical reaction that happens inside every living cell, in which energy is released from glucose so that the cell can use it.

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