Eukaryotic cells 4 - Plant organelles

Question 1

What is a vacuole

Answer 1

any fluid filled space inside the cytoplasm surrounded by a memrbane

Question 2

what is the vacuole surrounded by

Answer 2

Tonoplasts

Question 3

What are tonoplasts

Answer 3

specilaised membrane that surrounds the permanent vacuole in plant cells and controls movements of substances into and out of the cell sap

Question 4

What is the vacuole filled with

Answer 4

Cell sap

Question 5

What is cell sap

Answer 5

an aqueous solution that fills the permanent vacuole

Question 6

how does cell sap move into the cells

Answer 6

Osmosis

Question 7

What is the result of the cell sap entering the cell

Answer 7

the cytoplasm is kept pressed against the cell wall this in turn keeps the cell turgid (swollen) and the whole plant upright

Question 8

what is another use of a vacuole

Answer 8

storage of a number of diffrent substances

vacuoles can store proteins in the cells of seeds and fruits

Vacuoles often store waste products and other chemicals

Question 9

What do mitchondria and chlorplasts have in common

Answer 9

Contain there own DNA

Surrounded by an outer membrane

Have an enormously folded inner membrane that gives a greatly increased surafce area on which enzyme controlled reactions take place

Question 10

What are some diffrences between cholorplasts and mitochondria

Answer 10

Chlorplasts :

are the site for photosynthesis

Contain chlorphyll

are formed from a type of relatively unspeacilised plant organelle known as a lecuplast

Question 11

What are amyloplasts

Answer 11

plant organelles that store starch

Question 12

Describe the structure of chrorplasts in relation to their role in PS

Answer 12

The thyklanoids membrane are the site for light independent reactions

The thykaloids membranes provide space for H+ ions

ATPase in thyalkoid membranes