Cell Organelles Study Notes (Vesicles, Peroxisomes, Lysosomes, Mitochondria)

A set of Question and Answer flashcards covering vesicles, peroxisomes, lysosomes, and mitochondria based on the provided notes.

What are vesicles?

Membrane-bound sacs that transport, store, and ship materials within the cell.

What are secretory vesicles and what is their function?

Vesicles that carry materials to the cell membrane for release outside the cell (exocytosis).

What are endocytic vesicles?

Vesicles formed to bring substances into the cell via endocytosis.

What are peroxisomes and their role?

Organelles that detoxify waste products and help break down fatty acids; contribute to detoxification.

What do lysosomes do and what do they contain?

Contain digestive enzymes that break down waste, damaged organelles, and foreign material.

What is the mitochondrion's primary role?

Site of cellular respiration where O2 is used to produce ATP; generates the cell's energy.

Do mitochondria contain their own DNA and how is it inherited?

Yes, mitochondria contain their own DNA (mtDNA) and it is inherited maternally (from the mother).

What determines the number of mitochondria in a cell?

The cell's energy requirements—the more energy a cell needs, the more mitochondria it has.