Plant Bio 3

Question 1

What are the stage of mitosis

Answer 1

Interphase: non dividing cell
Prophase: condensing of chromosomes
Metaphase: line up at equator
Anaphase: sister chromatids separate
Telophase: new nuclear envelopes start to form

Question 2

What specifies the plane of cell division in plant cells

Answer 2

The preprophase band of microtubules

Determine if verticals or horizontal

Question 3

What are plasmodesmata

Answer 3

The cytoplasmic connection between adjacent cells

Question 4

What are plasmodesmata important for

Answer 4

Moving small and large molecule selectively

Cell to cell communication

Question 5

What cells are plasmodesmata found

Answer 5

Found in all cell types

Question 6

When are plasmodesmata formed

Answer 6

During cell division where the ER is trapped between two cell walls

Question 7

What is a size exclusion limit of plasmodesmata

Answer 7

SEL is 1kDA

So anything below this size can pass through cells

But macromolecules (anything higher than 30) need a signal to open a gate to pass through, they can selectively move

Question 8

What is a vacuole

How much of the cells volume does it take up

Answer 8

A fluid filled compartment surround by tonoplast membranes

30%

Question 9

What is the function of a vacuole

Answer 9

Storage (ions, sugars, protiens)

Digestion (hydrolases,protienase, nuclease)

Ph/ion homeostasis (<5.5ph)

Defense (toxic compound are made like pathogens)

Question 10

What are the two types of vacuoles

Answer 10

Lytic vacuole

Protein storage vacuole