Biology unit review

The movement of molecules against or up a concentration gradient

• simple diffusion

• facilitated diffusion

• active transport

• osmosis

This is the entering of substances into a cell

• endocytosis

• exocytosis

• both

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of ___________.

• osmosis
• equilibrium
• diffusion
• hypertonic

In a solution, salt is considered the _______.

• solvent
• solute
• solution

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

Tags

NGSS.MS-LS1-3

All cells have a cell membrane

• True
• false

Why do we add stain to cells when we look at them under the microscope?

• to kill them

• so they can not move

• to make them easier to see

• to make them swell up so they are easier to see

What is labeled by the number 3?

• Ocular Lens

• Objective Lens

• Diaphragm

• Base

The higher the magnification, the ________ you see of the specimen.

• more
• less
• higher
• lower

What power do you start with when using a microscope?

• High
• Medium
• Low