1) A product of yeast fermentation is LACTIC ACID. False

2) To begin glycolysis, FOUR ATP molecules are needed. False

3) Anaerobic respiration takes place in the CYTOSOL. True

4) Glucose enters the cell by FACILITATED DIFFUSION. True

5) If an animal cell is denied oxygen gas, it will undergo ETHYL ALCOHOL FERMENTATION. False

why does diffusion occur?

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To determine the correct answers to these statements, we can break down each question and find the relevant information.

1) A product of yeast fermentation is LACTIC ACID. False
Yeast fermentation actually produces ethanol as a product, not lactic acid. Lactic acid is produced during a different process called lactic acid fermentation, which occurs in certain microorganisms and muscle cells. Lactic acid fermentation is not specific to yeast.

2) To begin glycolysis, FOUR ATP molecules are needed. False
Glycolysis is the first step of cellular respiration, which breaks down glucose into pyruvate. Two ATP molecules are needed to initiate glycolysis, not four.

3) Anaerobic respiration takes place in the CYTOSOL. True
Anaerobic respiration, also known as fermentation, occurs in the cytosol (also referred to as the cytoplasm) of the cell. This is because it does not require oxygen and can take place in the absence of mitochondria.

4) Glucose enters the cell by FACILITATED DIFFUSION. True
Glucose is a large molecule that cannot freely pass through the cell membrane. Therefore, it requires transport proteins embedded in the cell membrane to facilitate its movement into the cell. This process is called facilitated diffusion.

5) If an animal cell is denied oxygen gas, it will undergo ETHYL ALCOHOL FERMENTATION. False
When an animal cell is deprived of oxygen, it undergoes a process called lactic acid fermentation. Ethyl alcohol fermentation, on the other hand, occurs in organisms such as yeast and bacteria. In the absence of oxygen, animal cells produce lactic acid instead of ethanol.