Unit 5: Organelles and Cell Theory

Front

What are lysosomes?

Back

Lysosomes are organelles in the cell that act as 'garbage collectors' by breaking down waste materials and cellular debris.

Front

What is the function of ribosomes?

Back

Ribosomes are organelles that synthesize proteins by translating messenger RNA (mRNA) into polypeptide chains.

Front

What type of cells do not have a nucleus?

Back

Prokaryotes are cells that do not have a nucleus; they include bacteria and archaea.

Front

What is the role of vacuoles in a cell?

Back

Vacuoles are organelles that store water, nutrients, and waste products, helping to maintain cell turgor and homeostasis.

Front

What is the cell theory?

Back

Cell theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and various organelles.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and structural support.

Front

What do mitochondria do?

Back

Mitochondria are known as the 'powerhouses' of the cell, as they generate ATP through cellular respiration.

Front

What is the function of chloroplasts?

Back

Chloroplasts are organelles found in plant cells that conduct photosynthesis, converting light energy into chemical energy.

Front

What is the endoplasmic reticulum (ER)?

Back

The endoplasmic reticulum is an organelle that assists in the synthesis of proteins (rough ER) and lipids (smooth ER).