True or False? "All plant cells lose the ability to differentiate at an early stage."

• True

• False

Which of these parts are not found in a bacterial cell?

• Nucleus

• Cell membrane

• Cell wall

Diffusion is where particles spread out from...

• ...an area of lower concentration to an area of higher concentration.

• ...am area of higher concentration to an area of lower concentration.

When using a light microscope to view a slide, which lens should be selected to start with?

• Lowest-powered objective lens

• Highest-powered objective lens

True or False? "In human body cells, chromosomes usually come in pairs."

• True

• False

If the concentration of water inside a cell is lower than outside the cell, what will the net movement of water molecules be?

• Into the cell

• Out of the cell

Which of these characteristics makes the alveoli efficient at gas exchange?

• They have thick walls.

• They have a large surface area.

• They don't have a good blood supply.

What happens inside a cell before mitosis takes place?

• The number of sub-cellular structures it has increases.

• One set of chromosomes is pulled to each end of the cell.

• The cell membrane divides.

What is a tissue?

• A collection of different types of cell that work together.

• A collection of similar cells that work together.

What colour is iodine solution in the presence of starch?

• Blue-black

• Brown-orange

• Brick-red