Cell Unit

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts that speed up chemical reactions in the body by lowering the activation energy required.

Front

What is specificity in the context of enzymes?

Back

Specificity refers to the ability of an enzyme to select and bind to a specific substrate, meaning each enzyme typically catalyzes only one type of reaction.

Front

What is a eukaryotic cell?

Back

A eukaryotic cell is a type of cell that contains a nucleus and other membrane-bound organelles, and it has DNA enclosed within a nuclear envelope.

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a simple, unicellular organism that lacks a nucleus and membrane-bound organelles, with its DNA floating freely in the cytoplasm.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink or crenate due to the higher concentration of solutes outside the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, leading to water entering the cell and potentially causing it to swell or burst.

Front

What is an isotonic solution?

Back

An isotonic solution has an equal concentration of solutes inside and outside the cell, resulting in no net movement of water and maintaining cell shape.

Front

What is the optimal temperature for enzyme activity?

Back

The optimal temperature is the temperature at which an enzyme functions most efficiently, often around 37°C for human enzymes.

Front

What is denaturation in enzymes?

Back

Denaturation is the process where an enzyme loses its functional shape due to extreme conditions (like high temperature or pH), rendering it inactive.

Front

What is the role of the active site in an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds, and the reaction occurs.