Life Science Midterm Review

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What are the two main types of cells?

Back

Prokaryotes and Eukaryotes.

Front

What is a key difference between Prokaryotes and Eukaryotes?

Back

Eukaryotes have a nucleus, while Prokaryotes do not.

Front

What is the function of the trachea in the respiratory system?

Back

The trachea, or windpipe, carries air to and from the lungs.

Front

What are two jobs of the skeletal system?

Back

The skeletal system makes red blood cells and stores minerals.

Front

What is cell theory?

Back

Cell theory states that all living things are composed of cells, and living cells come only from other living cells.

Front

What is the smallest unit of life?

Back

The cell is the smallest unit of life that can perform all life processes.

Front

What is the function of alveoli in the lungs?

Back

Alveoli are tiny air sacs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What is the role of mitochondria in a cell?

Back

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

Front

What is the function of the endoplasmic reticulum?

Back

The endoplasmic reticulum is involved in the synthesis of proteins and lipids.