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In Course: GCSE Combined Science (AQA Trilogy): Biology

AQA GCSE Combined Science: Bioenergetics

This deck focuses on the key processes of photosynthesis and respiration. It covers the word and balanced symbol equations for photosynthesis, and the concept of limiting factors (light, temperature, CO2 concentration). It details aerobic and anaerobic respiration in animals and plants (including fermentation in yeast), comparing the two processes. The deck also explains the body's response to exercise, including increased heart and breathing rate, and the concept of oxygen debt. It includes the required practical investigating the effect of light intensity on the rate of photosynthesis.

A dramatic, wide-angle photograph captures a vibrant, damp forest floor, with sunbeams filtering through a dense canopy. Intricate details of decaying leaves and logs covered in moss and delicate fungi fill the foreground, symbolizing the continuous cycle of life and decay. A subtle mist or dew on the foliage hints at the essential role of water in these natural processes.

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Deck Contents

67 Cards
Lesson#1
In this deck, we'll explore bioenergetics, which is all about how energy flows through living systems. We'll focus on two of the most fundamental processes in biology: photosynthesis and respiration. You'll learn how plants create their own food using light, and how all living organisms, including us, release energy from that food to power their life processes. We'll also investigate what limits these processes and how our bodies respond to the energy demands of exercise.
Lesson#2
Let's begin with photosynthesis. The word 'photo' means light, and 'synthesis' means to make. So, photosynthesis is literally 'making with light'. It's the chemical reaction that plants and algae use to turn simple substances, carbon dioxide and water, into glucose, which is a type of sugar they use for energy and growth. This process is powered by light energy, which is absorbed by a green pigment called chlorophyll found inside organelles called chloroplasts.
Quiz#3
What is the name of the green pigment in plant cells that absorbs light for photosynthesis?

chlorophyll

Quiz#4
In which part of a plant cell does photosynthesis take place?

chloroplasts

Quiz#5
What is the word equation for photosynthesis?

carbon dioxide plus water produces glucose plus oxygen

Quiz#6
In photosynthesis, what are the two reactants?

carbon dioxide and water

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