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What chemical substance do yeast consume?
Yeast uses sugar in respiration.Glucose is the primary substrate.This is oxidized during respiration
Why is fermentation needed when oxygen is not available?
Fermentation is the anaerobic (without oxygen) respiration of sugar by yeast. This correctly indicates that oxygen is not used in the process, but its incorrect to say the absense of oxygen is required. Brewers yeast will ferment anaerobically in the presence of glucose at concentrations of > 1g/l. Brewers yeast has a high alcohol tolerance and produces alcohol as an inhibitor to competitive organisms. Once all the glucose is consumed brewers yeast will consume the alcohol. This phenomenom is known as the Crabtree Effect
What is the difference between aerobic respiration and anaerbic respiration?
Aerobic respiration: 1) Requires oxygen 2) Occurs in the mitochondria 3) Produces 38 molecules of ATP 4) Products are carbon dioxide and water in both yeast and humans 5) The glucose molecule is completely oxidised. Anaerobic respiration: 1) Doesn't requires oxygen 2) Occurs in the cytoplasm 3) Produces 2 molecules of ATP 4) Products are lactic acid in humans and carbon dioxide and ethanol in yeast 5) The glucose molecule is partially oxidised.
Why do yeast cells consume glucose much more slowly if oxygen is present than absent?
why do yeast cells consume glucose much more slowly when oxygen is present than when oxygen is absent
What sugar does yeast prefer for aerobic respiration?
Glucose. It can also use sucrose and maltose, but much less than glucose.
How does yeast break down food without the use of oxygen?
the yeast uses anaerobic respiration instead which only needs glucose
Why would the respiration of yeast graph not continue to go up in a straight line if the amount of glucose was increased indefinately?
Because glucose is not the only molecule required for respiration, oxygen is also needed, if the amount of glucose was increased indefinatly then the amount of oxygen would decrease rapidly until there is no longer enough. Anaerobic respiration will continue to occur even without oxygen, however, this produces ethanol (in yeast) as a biproduct, when the concentration of ethanol becomes too high, the yeast die.
What chemical substance do yeast consume?
Yeast uses sugar in respiration.Glucose is the primary substrate.This is oxidized during respiration
Could you give a venn diagram of cellular respiration and fermentation?
Fermentation: Takes place without oxygen, takes place in cytoplasm. Cellular respiration: Requires oxygen, takes place in cytoplasm and mitochondria. Both: Are ways that organisms produce energy by breaking down glucose.
Why is fermentation needed when oxygen is not available?
Fermentation is the anaerobic (without oxygen) respiration of sugar by yeast. This correctly indicates that oxygen is not used in the process, but its incorrect to say the absense of oxygen is required. Brewers yeast will ferment anaerobically in the presence of glucose at concentrations of > 1g/l. Brewers yeast has a high alcohol tolerance and produces alcohol as an inhibitor to competitive organisms. Once all the glucose is consumed brewers yeast will consume the alcohol. This phenomenom is known as the Crabtree Effect
What do yeast glucose and water result in?
The yeast will break down the glucose which produces Carbon dioxide + Ethanol + Energy during anaerobic respiration and the process is also known as 'fermentation'. Carbon dioxide and Ethanol are the waste products. During aerobic respiration, the yeast will produce the same products as we produce such as Carbon dioxide, water and energy.
What is the difference between aerobic respiration and anaerbic respiration?
Aerobic respiration: 1) Requires oxygen 2) Occurs in the mitochondria 3) Produces 38 molecules of ATP 4) Products are carbon dioxide and water in both yeast and humans 5) The glucose molecule is completely oxidised. Anaerobic respiration: 1) Doesn't requires oxygen 2) Occurs in the cytoplasm 3) Produces 2 molecules of ATP 4) Products are lactic acid in humans and carbon dioxide and ethanol in yeast 5) The glucose molecule is partially oxidised.
What is the word equation for aerobic respiration in yeast?
I was just looking up the same thing because I am doing my GCSE in a couple of days...it is the same as aerobic respiration in humans..(the only difference is yeast can also respire anerobically if there is no oxygen available, although this produces less engergy) glucose + oxygen --> water + carbon dioxide + energy (32 ATP) - (whereas anerobically yeast would only have made 2 ATP) Hope that helps!
Why do yeast cells consume glucose much more slowly if oxygen is present than absent?
why do yeast cells consume glucose much more slowly when oxygen is present than when oxygen is absent
What sugar does yeast prefer for aerobic respiration?
Glucose. It can also use sucrose and maltose, but much less than glucose.
Differences between fermentation and respiration?
one uses oxygen to get energy and the other uses yeast!Fermentation does not need oxygen. Aerobic respiration need oxygen
Why do yeast cells grow faster in cellular respiration?
Maltose has a higher rate of reaction with yeast than sucrose this is because maltose is made up of 2 glucose monosaccharides while sucrose is made up of a glucose monosaccharide and a fructose monoshaccharide and also glucose is a hexagon while fructose is a pentagon which makes them structurally different
