2024 Cells Unit Pretest

Front

What is the Cell Theory?

Back

The Cell Theory states that: 1) All living things are made of cells, 2) Cells are the basic unit of life, and 3) All cells come from existing cells.

Front

What is a lysosome?

Back

A lysosome is an organelle in a cell that acts as a trash collector and recycler, breaking down waste materials and cellular debris.

Front

What is active transport in cells?

Back

Active transport is the process by which cells move particles against a concentration gradient, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of particles across a cell membrane without the use of energy, often following a concentration gradient.

Front

What are tissues?

Back

Tissues are groups of cells that have similar functions, such as nervous, epithelial, muscle, and connective tissues.

Front

What do mitochondria do?

Back

Mitochondria are known as the powerhouse of the cell, as they produce energy in the form of ATP through cellular respiration.

Front

What is the function of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, providing protection and support.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the role of ribosomes?

Back

Ribosomes are the sites of protein synthesis in the cell, translating messenger RNA into proteins.

Front

What is a vacuole?

Back

A vacuole is a storage organelle in a cell, often containing water, nutrients, or waste products.