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During exercise, the heart rate increases and this causes increased blood flow to the muscles.

Aerobic Respiration

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Respiration is the method that all living cells use to produce energy. There are two types of respiration, depending on the levels of oxygen available to a cell - aerobic if there is plenty of oxygen or anaerobic if the oxygen supply is insufficient. Aerobic respiration gives a greater yield of energy than anaerobic respiration. During aerobic respiration, glucose reacts with oxygen to release energy.

1 .

Muscles store glucose in which form?

As starch

As glycogen

As protein

As oxygen

Glycogen is a huge molecule made up of many glucose molecules all joined together

2 .

During exercise, what happens to the rate and depth of breathing?

It increases

It decreases

It stays the same

It goes up and then down again

This is to get more oxygen to the cells but it also means that the increased levels of carbon dioxide can be dealt with

3 .

What is the waste gas released by aerobic respiration?

Carbon monoxide

Ozone

Carbon dioxide

Ammonia

Carbon dioxide is always given off in respiration

4 .

Energy is released from which cell organelle?

Nucleus

Cytoplasm

Chloroplast

Mitochondrion

Each cell has many mitochondria

5 .

Energy from respiration is not used for which of the following?

Muscle contraction

Building larger molecules from smaller ones

Maintaining a constant body temperature in fish and reptiles

Maintaining a constant body temperature in mammals and birds

These are known as cold blooded animals

6 .

During exercise, the heart rate increases to increase blood flow to which part of the body?

The kidneys

The muscles

The ears

The eyes

The muscle cells work much harder than normal during exercise

7 .

What does aerobic mean?

With oxygen

With carbon dioxide

With hydrogen

With nitrogen

Respiration is therefore an oxidation reaction

8 .

In plants, energy is used to convert sugars into amino acids. Which of the following are made up from amino acids?

Proteins

Fats

DNA

Starch

Plants need proteins for the cell membrane and to make enzymes

9 .

What does respiration release?

Food

Waste

Energy

Light

Respiration is not the same thing as breathing! Respiration is all about energy release, whereas breathing involves gaseous exchange. Breathing supplies the oxygen for repiration and eliminates the waste carbon dioxide from the body

10 .

One reactant in aerobic respiration is oxygen. What is the other?

Glucose

Waste

Urea

Amino acid

This is the substance that is reduced during the reaction

Author: Donna Maria Davidson