Bio Unit 4: Cell (Transport) & Microscope parts

Front

What is osmosis?

Back

The diffusion of water.

Front

True or False: Osmosis is an active process and requires extra energy for it to occur.

Back

False

Front

What does it mean for a membrane to be semi-permeable?

Back

It allows specific molecules to pass through it.

Front

What is the function of the fine focus on a microscope?

Back

Improves resolution of the sample image.

Front

Identify the microscope part that controls the amount of light reaching the specimen.

Back

Diaphragm

Front

What is the primary function of the objective lenses on a microscope?

Back

Magnifies the sample image.

Front

Define diffusion in the context of cellular transport.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What role do proteins play in cell membranes?

Back

They assist in the transport of substances across the membrane.