Understanding Glucose, Enzymes, and Reactions

What is the primary role of glucose in cellular respiration?

• To transport oxygen

• To store genetic information

• To release energy

• To provide structural support

How is glucose absorbed into the bloodstream?

• Through the kidneys

• Via the lungs

• Through the skin

• By active transport in the small intestine

What is the difference between glucose and starch?

• Glucose is a complex carbohydrate, starch is a simple carbohydrate

• Glucose is a protein, starch is a fat

• Glucose is a simple carbohydrate, starch is a complex carbohydrate

• Glucose is a fat, starch is a protein

What role do enzymes play in the breakdown of starch?

• They transport nutrients

• They store genetic information

• They act as biological catalysts

• They act as a source of energy

Why can't amylase break down proteins?

• Because amylase is specific to carbohydrates

• Because amylase is a protein itself

• Because proteins are too small

• Because proteins are not found in the body

What happens to enzymes at very high temperatures?

• They denature and lose their function

• They start to replicate

• They become more efficient

• They turn into carbohydrates

What is the optimum temperature for most enzymes in the human body?

• 25 degrees Celsius

• 37 degrees Celsius

• 100 degrees Celsius

• 50 degrees Celsius

What is the effect of pH on enzyme activity?

• Enzymes work best at any pH

• Enzymes denature at extreme pH levels

• Enzymes are only active in acidic conditions

• pH has no effect on enzymes

What is the purpose of using iodine in the enzyme experiment?

• To act as a buffer solution

• To provide nutrients

• To indicate the presence of starch

• To measure temperature

In the experiment, what does a change in iodine color indicate?

• The increase in temperature

• The presence of glucose

• The formation of proteins

• The breakdown of starch