Homework - aerobic respiration anaerobic respiration and uses

• Science
• Lower Secondary (Key Stage 3)

Homework - aerobic respiration

Where does aerobic respiration take place in your cells?

1. Cytoplasm
2. Mitochondria
3. Nucleus
4. Cell membrane

What are the products of aerobic respiration?

1. Alcohol, lactic acid, ATP
2. Proteins, fats, vitamins
3. Glucose, oxygen, heat
4. Carbon dioxide, water, energy

What is the word equation for aerobic respiration?

1. sugar + water → carbon dioxide + oxygen
2. cellulose + oxygen → glucose + energy
3. glucose + oxygen → carbon dioxide + water (+ energy)
4. starch + glucose → carbon dioxide + water

What is the main purpose of aerobic respiration?

1. To remove excess water from the body
2. To transfer energy to cells
3. To produce carbon dioxide
4. To store glucose in the body

Which molecule reacts with oxygen in aerobic respiration?

1. Lipid
2. Glucose
3. Protein
4. Fructose

How is glucose transported around the body?

1. Dissolves in the liquid part of blood plasma
2. Binds to red blood cells

Where do waste carbon dioxide molecules dissolve?

1. In the small intestine
2. In blood plasma

How is oxygen carried in the bloodstream?

1. By joining to the haemoglobin
2. Dissolves in the liquid part of blood plasma

What happens to oxygen and glucose in the cells?

1. They are exhaled from the alveoli
2. They diffuse from the blood into cells

Where are oxygen molecules absorbed into the bloodstream?

1. By the alveoli
2. By the small intestine

What is the main disadvantage of using anaerobic respiration?

1. Requires more oxygen than aerobic respiration
2. Results in faster muscle recovery than aerobic respiration
3. Produces more lactic acid than aerobic respiration
4. Releases less energy than aerobic respiration

What is the end product of anaerobic respiration in humans?

1. Glucose
2. Water
3. Carbon dioxide
4. Lactic acid

What is the purpose of the extra oxygen inhaled after stopping exercise?

1. Increases muscle cramping
2. Breaks down the lactic acid
3. Provides more energy for further exercise
4. Reduces the need for aerobic respiration

When does anaerobic respiration often occur in the body?

1. During sleep
2. During strenuous exercise
3. After a meal
4. During relaxation

What is the term for the oxygen needed to break down lactic acid after exercise?

1. Aerobic requirement
2. Respiration debt
3. Lactic acid compensation
4. Oxygen debt

What is the role of yeast in the production of bread and alcoholic drinks?

1. Creating a sour taste in the final product
2. Producing sediments during filtration
3. Speeding up fermentation and producing carbon dioxide
4. Evaporating ethanol in the oven

What biological process is used in the production of bread and alcoholic drinks?

1. Photosynthesis
2. Oxidative phosphorylation
3. Fermentation
4. Respiration

What causes the dough to rise when making bread?

1. Addition of baking powder
2. Presence of air bubbles in the dough
3. High sugar content in the dough
4. Yeast respiring and releasing carbon dioxide

What happens to the ethanol produced during the fermentation of beer and wine?

1. It evaporates in the oven
2. It is converted into sugar
3. It enhances the flavor of the drink
4. It is removed by filtration