Basic Components Of Living Systems

Question 1

In what type of cells are centrioles found?

Answer 1

Eukaryotic plant and animal cells. NOT prokaryotic.

Question 2

What is the smallest organelle in a cell?

Answer 2

Ribosomes

Question 3

What is the role of lysosomes?

Answer 3

They are specialised vesicles that digest waste material.

Question 4

What is the cell wall in a plant cell made of?

Answer 4

Cellulose

Question 5

What is the tonoplast?

Answer 5

The vacuole membrane

Question 6

Name 3 things in a plant cell that do not occur in an animal cell.

Answer 6

1) chloroplasts 2) vacuole 3) cell wall

Question 7

What is the cell wall in a prokaryotic cell made of?

Answer 7

Peptidoglycan

Question 8

How is DNA in a prokaryotic cell arranged?

Answer 8

DNA is found as plasmids (circular DNA) and it is free floating in the cytoplasm.

Question 9

What is the resolution of a light microscope?

Answer 9

200nm

Question 10

What are stains used for?

Answer 10

To increase contrast within the cell so that different components become more visible.

Question 11

What does an electron microscope allow us to see that can’t be seen under a light microscope?

Answer 11

The ultrastructure of a cell.

Question 12

What is the resolution of an electron microscope?

Answer 12

0.5 nm

Question 13

What is the role of the Golgi apparatus?

Answer 13

It modifies proteins and packs them into vesicles.