Biology 0610 · IGCSE
Anaerobic respiration
100 practice questions on Anaerobic respiration, with worked solutions and instant marking.
What products are formed by yeast in anaerobic respiration?
Feb/March 2016
Yeast is used in bread-making. During anaerobic respiration, it produces carbon dioxide.
Feb/March 2016
Which substances are produced during anaerobic respiration in muscles?
Feb/March 2017
Which products are formed by anaerobic respiration in muscles?
Feb/March 2017
What is one product of anaerobic respiration in yeast?
Feb/March 2018
Complete the sentences about aerobic and anaerobic respiration. Anaerobic respiration differs from aerobic respiration because [BLANK] is not required to break down glucose molecules. The amount of [BLANK] released from each glucose molecule is much lower in anaerobic respiration. In humans, anaerobic respiration occurs in [BLANK] cells during strenuous exercise. It produces [BLANK] from glucose. Another type of anaerobic respiration occurs in yeast cells. In this case, glucose is broken down into alcohol and [BLANK].
Feb/March 2019
Four flasks are sterilised and arranged as shown. After several hours, which flask will have the greatest amount of alcohol?
Feb/March 2020
How many molecules of ethanol are produced during the anaerobic respiration of one molecule of glucose?
Feb/March 2020
What products are formed during anaerobic respiration in yeast?
Feb/March 2021
After completing a sprint race, a student felt pain in the muscles of their leg. This pain was due to the accumulation of a product formed during anaerobic respiration. Which product was responsible for the pain?
Feb/March 2021
Join the left-hand box to three boxes on the right so that you make three correct sentences.
Feb/March 2021
A student carried out an investigation into how temperature affects respiration in yeast. The diagram shows the apparatus they used. Which substance caused the indicator to change from clear to cloudy?
Feb/March 2023
What is the reason for using yeast in bread-making?
Feb/March 2023
For what reason is yeast used in bread-making?
Feb/March 2023
Which products are produced during anaerobic respiration in yeast?
Feb/March 2024
What balanced equation represents anaerobic respiration in yeast?
Feb/March 2024
During anaerobic respiration in yeast, which substance is formed?
Feb/March 2025
Yeast, sugar and water are combined in a test-tube. The diagrams illustrate the test-tube at the beginning and one hour later. Which process is responsible for this change?
May/June 2016
What is made by anaerobic respiration in yeast?
May/June 2016
A test-tube contains yeast, sugar and water mixed together. The diagrams illustrate the test-tube at the beginning and again after one hour. Which process brings about this change?
May/June 2016
Yeast, sugar and water are combined in a test-tube. The diagrams show the test-tube at the beginning and again after one hour. Which process is responsible for this change?
May/June 2016
Which statement correctly describes anaerobic respiration in yeast?
May/June 2016
Yeast, sugar and water are combined in a test-tube. The diagrams show the test-tube at the beginning and after one hour. Which process is responsible for this change?
May/June 2016
A mixture of yeast, sugar and water is put into a test-tube. The diagrams show the test-tube at the beginning and again after one hour. What process is responsible for this change?
May/June 2016
Lactic acid accumulates in the muscles during strenuous exercise. During recovery, how is this lactic acid removed?
May/June 2016
Yeast, sugar and water are combined in a test-tube. The diagrams illustrate the test-tube at the beginning and after one hour. Which process is responsible for this change?
May/June 2016
For what reason is yeast used in breadmaking?
May/June 2017
What is the purpose of using yeast in breadmaking?
May/June 2017
Which equation shows anaerobic respiration in humans?
May/June 2017
Why is yeast used in breadmaking?
May/June 2017
Which equation shows anaerobic respiration in yeast?
May/June 2017
What is the reason yeast is used in breadmaking?
May/June 2017
What makes yeast useful in breadmaking?
May/June 2017
Which of the following is not involved in repaying the oxygen debt after a human has been exercising?
May/June 2017
What is the reason yeast is used in breadmaking?
May/June 2017
Select words from the list to fill the gaps in the respiration sentences. Each word can be used once, more than once, or not at all. alcohol, carbon dioxide, glucose, glycerol, lactic acid, oxygen, water
May/June 2017
Use words from the list to complete the definition of anaerobic respiration. Each word can be used once, more than once, or not at all. carbon dioxide, cells, chemical, chloroplasts, energy, nucleus, nutrient, oxygen, physical. The [BLANK] reactions in [BLANK] that break down [BLANK] molecules to release energy without using [BLANK].
May/June 2017
Which row gives the description of anaerobic respiration?
May/June 2018
Which row gives the description of anaerobic respiration?
May/June 2018
Which row gives the description of anaerobic respiration?
May/June 2018
Yeast can respire both aerobically and anaerobically. Which statement describes the waste products produced by yeast respiration?
May/June 2018
Yeast is put into a container that contains a glucose solution and no air. Which word equation represents the process occurring inside the container?
May/June 2019
Yeast is put into a container filled with glucose solution without air. Which word equation best summarises the process occurring inside the container?
May/June 2019
Yeast is put into a container filled with a glucose solution without air. Which word equation represents the process occurring inside the container?
May/June 2019
What is formed in humans by anaerobic respiration?
May/June 2021
What substances are produced by anaerobic respiration in yeast?
May/June 2021
The table lists some products of respiration. Which row identifies the products of anaerobic respiration in muscles?
May/June 2021
The four boxes on the left give definitions of processes that occur in the alimentary canal. The six boxes on the right list the names of those processes.
May/June 2021
What word equation represents anaerobic respiration in yeast?
May/June 2022
A student sprints 400 metres. What effects will this produce?
May/June 2022
What balanced chemical equation represents anaerobic respiration in yeast?
May/June 2022
Which statements show how an oxygen debt is repaid after vigorous exercise? 1 Lactic acid is carried to the liver. 2 Lactic acid is broken down aerobically. 3 Heart rate remains high so that lactic acid is removed from the muscles.
May/June 2022
Complete the sentences so they describe the data shown in Fig. 7.1.
May/June 2022
The diagram illustrates the activity of some yeast cells in a sugar solution. Which statement explains what occurs to the limewater?
May/June 2023
Which molecule is formed during anaerobic respiration in yeast?
May/June 2023
What substance is produced during anaerobic respiration in yeast?
May/June 2023
In the chemical equation for anaerobic respiration in yeast, the numbers have been substituted with the letters W, X, Y and Z. $C_wH_xO_w \rightarrow Y C_2H_zOH + YCO_y$ Which number is Z?
May/June 2023
A student recorded oxygen consumption before, during and after exercise. The findings are displayed in the graph. At what time is the oxygen debt being removed?
May/June 2023
In which organ is lactic acid broken down aerobically to repay an oxygen debt?
May/June 2023
In anaerobic respiration, yeast produces carbon dioxide and ethanol as end-products. Which of these end-products are used to produce biofuel and bread?
May/June 2023
After a fast race, some students feel pain in their leg muscles because of an accumulation of lactic acid. A student gave this explanation.
May/June 2023
Using words or phrases from the list, complete the statements on anaerobic respiration in humans. Anaerobic respiration is the chemical reaction in cells that [BLANK] nutrient molecules to release energy without using [BLANK]. Compared with aerobic respiration, anaerobic respiration releases much [BLANK] energy per glucose [BLANK]. [BLANK] is formed by anaerobic respiration during vigorous exercise.
May/June 2023
Finish the sentences so they describe and explain the pattern shown in Fig. 6.1. The pH falls from [BLANK] to [BLANK] during vigorous exercise. The muscles are not receiving enough [BLANK]. The body therefore respires anaerobically. The lactic acid made accumulates in the muscles, creating an [BLANK] debt. It needs [BLANK] minutes for the muscle pH to return to its starting value after exercise. The pH rises once vigorous exercise has stopped because lactic acid is carried in the [BLANK] to the [BLANK]. While this happens, the breathing rate and [BLANK] rate stay high.
May/June 2023
Yeast, sugar and water are combined in a test tube. The diagrams show the test tube at the beginning and again after one hour. Which process is responsible for this change?
May/June 2024
Which statement gives a description of anaerobic respiration?
May/June 2024
Yeast is able to produce carbon dioxide and ethanol. What product may be produced by using these products?
May/June 2024
Fig. 1.1 shows a photograph of bread-making at different stages. Bread dough is prepared by combining flour, water and yeast. Bread dough A has only just been mixed. Bread dough B was mixed a few hours before the photograph was taken, and its volume has increased.
May/June 2024
Mitochondria are present in both fungal cells and plant cells.
May/June 2024
What product is formed during anaerobic respiration in yeast cells?
May/June 2025
Which statement gives a correct comparison between aerobic respiration and anaerobic respiration in yeast?
May/June 2025
Which substance is formed during anaerobic respiration in human muscles?
May/June 2025
Which order of statements describes how an oxygen debt is formed and then repaid?
May/June 2025
For what reason is yeast used in bread-making?
Oct/Nov 2016
What is the reason yeast is used when making bread?
Oct/Nov 2016
The diagram illustrates the production of ethanol from a sugar solution that contains yeast. After five hours, bubbles formed in the mixture. Which gas makes up most of these bubbles?
Oct/Nov 2016
What makes yeast suitable for use in bread-making?
Oct/Nov 2016
Following a race, athletes build up oxygen debt. The diagram illustrates how this oxygen debt is repaid. What occurs at X?
Oct/Nov 2016
What equation represents anaerobic respiration in yeast?
Oct/Nov 2016
What is the reason yeast is used in bread-making?
Oct/Nov 2016
Once the race has finished, athletes have oxygen debt. The diagram illustrates how the oxygen debt is cleared. What occurs at X?
Oct/Nov 2016
Why is yeast used in bread production?
Oct/Nov 2016
In an experiment designed to study anaerobic respiration, two bottles are arranged in a warm room, as shown. Bottle P contains sugar, yeast and water. Bottle Q contains yeast and water. What would happen to each balloon after one day?
Oct/Nov 2017
To investigate anaerobic respiration, two bottles are placed in a warm room, as illustrated below. Bottle P contains sugar, yeast and water. Bottle Q contains yeast and water only. After one day, what change would be seen in each balloon?
Oct/Nov 2017
In an experiment designed to explore anaerobic respiration, two bottles are arranged in a warm room, as shown. Bottle P contains sugar, yeast and water. Bottle Q contains yeast and water. What would happen to each balloon after one day?
Oct/Nov 2017
To investigate anaerobic respiration, two bottles are arranged in a warm room, as shown. What would be the result for each balloon after one day?
Oct/Nov 2017
To study anaerobic respiration, two bottles are arranged in a warm room, as shown. What would happen to each balloon after one day?
Oct/Nov 2017
In an experiment designed to study anaerobic respiration, two bottles are placed in a warm room, as shown. What would happen to each balloon after one day?
Oct/Nov 2017
A person who intended to start a fitness programme did some vigorous exercise. A fitness trainer removed a drop of blood from the person's finger before, during and after the vigorous exercise and tested it for lactic acid.
Oct/Nov 2017
What product is made by anaerobic respiration in mammals?
Oct/Nov 2018
Making ethanol for biofuels happens in two stages. First, starch is changed into glucose by ......1...... . Next, glucose is changed into ethanol by ......2...... during ......3...... . Which row correctly fills in gaps 1, 2 and 3?
Oct/Nov 2018
What substance is formed during anaerobic respiration in mammals?
Oct/Nov 2018
Lactic acid accumulates in the muscles during intense exercise. How is this lactic acid cleared away during recovery?
Oct/Nov 2019
Lactic acid accumulates in the muscles during vigorous exercise. During recovery, by what process is this lactic acid removed?
Oct/Nov 2019
Muscle cells are able to perform both aerobic respiration and anaerobic respiration.
Oct/Nov 2019
A group of students added yeast, sugar and water to a bottle. Next, they fitted an empty balloon over the mouth of the bottle. The bottle was then left in a warm place for one hour. Over this period, the balloon became larger. Why does the balloon become larger?
Oct/Nov 2021
Yeast is an organism used in the production of biofuels. Which statement explains why yeast is used to produce biofuels?
Oct/Nov 2021
What useful product is formed by anaerobic respiration during the manufacture of bread?
Oct/Nov 2021
Which word equation shows anaerobic respiration in yeast cells?
Oct/Nov 2021
Which statement concerning lactic acid is correct?
Oct/Nov 2021
What useful product is formed by anaerobic respiration in bread manufacture?
Oct/Nov 2021