Biology GMAS Practice

Front

What is the function of digestive enzymes in the small intestine?

Back

Digestive enzymes break down macromolecules like proteins, carbohydrates, and fats into smaller molecules that can be absorbed by the body.

Front

What pH range do most digestive enzymes function efficiently?

Back

Most digestive enzymes function efficiently between pH 7.0 and pH 9.0.

Front

What is homeostasis in the context of cell membranes?

Back

Homeostasis refers to the ability of a cell to maintain a stable internal environment, which is supported by the cell membrane's regulation of what enters and exits the cell.

Front

How do cell membranes contribute to homeostasis?

Back

Cell membranes regulate the movement of substances in and out of the cell, helping to maintain a stable internal environment.

Front

What happens to glucose, oxygen, and carbon dioxide during cellular respiration?

Back

During cellular respiration, glucose and oxygen decrease while carbon dioxide increases.

Front

What is the role of lipids in biological membranes?

Back

Lipids are insoluble in water, allowing them to form a barrier that regulates the entry and exit of substances in biological membranes.

Front

What is the effect of temperature on enzyme activity?

Back

Temperature can influence the rate of enzyme activity, with each enzyme having an optimal temperature range for maximum activity.

Front

What is the significance of pH in enzyme function?

Back

Enzymes have optimal pH ranges where they function best; deviations can reduce their activity.

Front

What are nucleic acids and their function?

Back

Nucleic acids, such as DNA and RNA, store and transmit genetic information.

Front

What are carbohydrates and their primary function?

Back

Carbohydrates provide energy and serve as structural components in cells.