Cellular Structure

Front

What are ribosomes and where are they found in the cell?

Back

Ribosomes are small structures made of RNA and proteins that are responsible for protein synthesis. They can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum (ER), forming rough ER.

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and support. It is primarily composed of a phospholipid bilayer with embedded proteins.

Front

What is the composition and function of the cell wall?

Back

The cell wall is made of thick layers of cellulose fibers and provides structural support and protection to plant cells. It helps maintain the shape of the cell.

Front

Define cytoplasm and its role in the cell.

Back

Cytoplasm is the gel-like substance within the cell membrane that contains organelles. It is the site of many metabolic reactions and provides a medium for molecular movement.

Front

What is produced by chloroplasts during photosynthesis?

Back

Chloroplasts produce glucose and oxygen during photosynthesis, using sunlight, carbon dioxide, and water.

Front

What are the two main types of endoplasmic reticulum and their functions?

Back

The two main types of endoplasmic reticulum are rough ER, which is studded with ribosomes and synthesizes proteins, and smooth ER, which is involved in lipid synthesis and detoxification.

Front

What is the role of mitochondria in the cell?

Back

Mitochondria are known as the powerhouse of the cell, as they generate ATP through cellular respiration, providing energy for cellular activities.

Front

What is the function of lysosomes?

Back

Lysosomes are organelles that contain digestive enzymes to break down waste materials and cellular debris, playing a key role in cellular cleanup.

Front

What is the significance of the nucleolus within the nucleus?

Back

The nucleolus is responsible for producing ribosomal RNA (rRNA) and assembling ribosomes, which are essential for protein synthesis.

Front

How do plant cells differ from animal cells in terms of structure?

Back

Plant cells have a rigid cell wall, chloroplasts for photosynthesis, and large central vacuoles, while animal cells lack these structures.