All categories

3 years ago

What is produced when a yeast cell undergoes fermentation?. A] Ethyl alcohol. B] Pyruvate . C] Oxygen gas. D] Lactic acid.

Biology

2 answers:

vredina [299]3 years ago

4 0

Answer:

The correct answer would be A] Ethyl alcohol.

Yeast undergo fermentation in absence of oxygen.

In anaerobic conditions, yeast converts one molecule of glucose into two molecules of ethanol and two molecules of carbon dioxide.

Glycolysis is common in both aerobic and anaerobic respiration. So, first glucose is converted into 2 molecules of pyruvate with net gain of 2 ATP (adenosine triphosphate) and 2 NADH.

Pyruvate is then converted into alcohol (ethanol) in a two-step manner.

First, it is converted into acetaldehyde which is catalyzed by pyruvate decarboxylase. One molecule of CO₂ is released as a byproduct.

Acetaldehyde is then converted into ethanol with the help of alcohol dehydrogenase. It regenerates NAD⁺ lost in glycolysis. It ensures that the cell can continuously use glycolysis as the source of ATP.

artcher [175]3 years ago

3 0

The item produced when a yeast cell undergoes fermentation is ethyl alcohol. The correct answer is A.

You might be interested in

Hbdbd dx d d dbddbbsdbdbdb

inna [77]

Answer:

io4ht3fhiq

Explanation:

7 0

3 years ago

Why is latitude a factor in the uneven heating of Earth's surface?

Maru [420]

Answer:

deflection of the winds to the right in the southern hemisphere was caused by uneven heating of the earth's surface.

hope it helped

Explanation:

8 0

3 years ago

Read 2 more answers

What happens to the phosphates when plants and animals die?

andrew-mc [135]

Answer:

When plants and animals die, organic molecules also undergoes decomposition and this causes the incorporated phosphates to go back to the soil or bodies of water.

Explanation:

Phosphates are naturally related to "phosphorus." They play a vital role in the life of animals and plants. Phosphorus can be commonly be found on the earth's land and water (although the land has a smaller amount of it). Plants naturally absorb phosphate from where they're growing. Animals take up phosphates by eating plants. The phosphate that plants get from the soil are considered inorganic. They only become organic when it is incorporated into the plants DNA (since this is an organic molecule).

So, this means that if there's a sufficient amount of phosphate, there will be more plants on earth as it is also important in the process of acquiring nutrients.

When animals and plants die, all of the organic molecules such as phosphate also breaks down and thus, it falls back to the soil or bodies of water. Then, they are ready to enter another Phosphorus cycle.

6 0

3 years ago

Read 2 more answers

Plz plz plz help help hell u will save my life

valentina_108 [34]

Answer:

BIOSPHERE LEVEL

Explanation:

7 0

3 years ago

Read 2 more answers

How are the growth and development of a baby related to the process of mitosis? weight is increased by adding new cells. mitosis

erma4kov [3.2K]

Mitosis is how we repair our cells and grow. It is the process of cell division. When you get a cut or you're a kid growing up, your cells are constantly dividing themselves to repair that cut or two add to your growing body. it takes 24 hours for a human cell to divide itself. This is always occurring from the day you were born.

8 0

4 years ago