Cell Theory, Organelles & Cell Transport Test 2025 P.2

Student Name

Which is NOT one of the components of the cell theory?

• Cells carry out the functions needed to support life.
• Everything once had cells.
• Every living thing is made up of one or more cells
• Cells come from other living cells.

A unicellular organism...

• is made of 1 cell
• is made of 2 cells

The smallest unit that can perform all processes necessary for life is a(n)

• Bacteria
• Organism
• Organ
• Cells

Which of the following is part of Cell Theory?

• Cells come from existing cells.
• There are no parts of a cell.
• Every kind of cells has the same parts inside.
• Every kind of cell is the same size.

Which is the best definition of osmosis?

• The movement of molecules from an area of their higher concentration to an area of their lower concentration
• The movement of molecules from an area of their lower concentration to an area of their higher concentration.
• The movement of water across a semipermiable membrane from an area of higher water concentration to an area of lower water concentration.
• The movement of water across a semipermeable membrane from an area of lower water concentration to an area of higher water concentration.

In a nerve cell, ATP energy is used to pump sodium (Na) out of the cell and potassium (K) into the cell. This is an example of...

• Facilitated Diffusion
• Simple Diffusion
• Active Transport
• Osmosis

Match the following types of cellular transport with their correct descriptions or examples.

• Process by which cells engulf substances into a pouch which becomes a vesicle

• endocytosis

• Process by which cells expel materials using vesicles that fuse with the plasma membrane

• exocytosis

• Movement of molecules from high to low concentration without energy input

• passive transport

• Diffusion of water across a selectively permeable membrane

• osmosis

Osmosis is a form of ______________ transport.

• Passive
• Active

What way will water move with the cell in this environment?

• Water will not move in or out of the cell
• Water will move into the cell
• Water will move out of the cell
• Water will move in and out of the cell equally