Biology Unit 1: Cells as the basis for life

What forms the channels and pumps in the phospholipid bilayer?

• Carbohydrates

• Hydrophilic heads

• Proteins

• Lipids

Hydrophilic means...

• Water loving

• non-polar

• water fearing

• polar

What is the main function of the cell membrane?

• Maintains relatively stable internal conditions

• Protect the cell

• Controls the temperature of the cell

• Maintains the pH of the cell

Identify structure G and H-I on the diagram

• cholesterol and phospholipid bilayer

• channel protein and phospholipid bilayer

• cholesterol and channel protein

• phospholipid bilayer and hydrophilic head

Identify the organelle in this image

• Chloroplast

• Ribosome

• Mitochondria

• Golgi apparatus

Identify the organelle in this image

• Chloroplast

• Mitochondria

• Ribosome

• RER

What is diffusion?

• when molecules don't move

• when molecules move from a low concentration to a high

• when molecules move from a high concentration to a low

• when molecules move

This is an example of

• osmosis

• active transport

• endocystosis

• diffusion

From left to right name the processes that are occurring

• pinocytosis, phagocytosis

• receptor mediated endocytosis, phagocytosis

• phagocytosis, pinocytosis

• pinocytosis, receptor mediated endocytosis

Identify the name of this theory

• Pinocytosis theory

• Endosymbiotic theory

• Theory of evolution

• Endocytosis theory