what promote cellular respiration in yeast cell? what condition appear to be detrimental to cellular respiration in yeast cell
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To understand what promotes cellular respiration in yeast cells and what conditions can be detrimental to it, we need to have a basic understanding of cellular respiration in yeast.
Cellular respiration is the process by which cells, including yeast cells, convert organic compounds into energy. Yeast cells primarily undergo anaerobic respiration, known as fermentation, where they metabolize sugar into ethanol and carbon dioxide. However, under certain conditions, yeast cells can also undergo aerobic respiration, where they convert sugar into carbon dioxide, water, and a large amount of energy.
Now, let's discuss what promotes and inhibits cellular respiration in yeast cells:
1. Promoters of cellular respiration in yeast:
a. Oxygen: Aerobic respiration in yeast requires oxygen. Increased levels of dissolved oxygen in the surrounding environment promote efficient cellular respiration.
b. Nutrient availability: Yeast cells need a consistent supply of nutrients, especially sugars such as glucose, to support cellular respiration efficiently.
c. Optimal temperature: Yeast cells have an optimum temperature range for growth and metabolic activity. Keeping the temperature within this range promotes cellular respiration.
2. Conditions detrimental to cellular respiration in yeast:
a. Lack of oxygen: Oxygen deficiency restricts the availability of the molecular oxygen required for aerobic respiration. It forces yeast cells to switch to anaerobic respiration, leading to lower energy production.
b. Acidic or alkaline pH: Yeast cells have an ideal pH range, usually around 5-7, and extreme pH conditions can negatively affect their enzymatic activity, leading to impaired cellular respiration.
c. High sugar concentration: Although yeast cells require sugar for respiration, excessively high sugar concentrations can create a hypertonic environment. This can lead to osmotic stress on the cells, impairing their respiration abilities.
d. High temperature: While yeast cells have an optimum temperature range, excessively high temperatures can denature enzymes involved in cellular respiration, leading to decreased activity or cell death.
In conclusion, a suitable supply of oxygen, nutrients, and optimal temperature can promote cellular respiration in yeast cells. Conversely, conditions such as oxygen deprivation, extreme pH, high sugar concentrations, and high temperatures can be detrimental to cellular respiration in yeast cells.