Science Flashcards
(20 cards)
What are the two types of respiration?
Aerobic and Anaerobic
What does aerobic respiration require?
Plenty of Oxygen
What is aerobic respiration?
Respiration using Oxygen
Why is aerobic respiration significant?
It’s the most efficient way to transfer energy from glucose
When does aerobic respiration occur?
All the time in plants and animals
Where do most reactions in aerobic respiration happen?
Inside mitochondria
Fill in the blank: The word equation for aerobic respiration is glucose + _______ → carbon dioxide + water.
Oxygen
What is the symbol equation for aerobic respiration?
C6H12O6 + 6O2 → 6CO2 + 6H2O
What is the word equation for aerobic respiration?
glucose + Oxygen → carbon dioxide + water
This process occurs inside mitochondria.
What does ‘anaerobic’ mean?
‘without oxygen’
Refers to the incomplete breakdown of glucose.
What is the word equation for anaerobic respiration in muscle cells?
glucose → lactic acid + carbon dioxide + water
This occurs when oxygen supply is insufficient during vigorous exercise.
Does anaerobic respiration transfer as much energy as aerobic respiration?
No
Anaerobic respiration does not fully oxidize glucose.
When is anaerobic respiration useful?
In emergencies, e.g. during exercise
It allows continued muscle use when oxygen is limited.
What do plants and yeast produce during anaerobic respiration?
Ethanol (alcohol) and carbon dioxide
This differs from the lactic acid produced in muscle cells.
What is fermentation?
Anaerobic respiration in yeast cells
It is a key process in the food and drinks industry.
What is the word equation for anaerobic respiration in plants and yeast?
glucose → ethanol + carbon dioxide
This equation highlights the products of fermentation.
Why is fermentation valuable in the food and drinks industry?
It is used to make bread and alcoholic drinks
Examples include beer and wine.
How does fermentation contribute to bread-making?
The carbon dioxide from fermentation makes bread rise
This is crucial for the texture of bread.
What is the role of fermentation in beer and wine-making?
It produces alcohol
This process is essential for the production of these beverages.
What type of organisms are yeast?
Single-celled organisms
They are crucial for fermentation processes.
