Unit 1 Review 2021

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 type of cell is characterized by having a nucleus?

Back

Eukaryotic cells are characterized by having a nucleus and membrane-bound organelles.

Front

Which organelle contains the cell's DNA?

Back

The nucleus contains the cell's DNA.

Front

What is the protective outermost layer of a cell called?

Back

The protective outermost layer of a cell is called the cell membrane.

Front

Name two organelles that arose from endosymbiosis.

Back

Mitochondria and chloroplasts are organelles that arose from endosymbiosis.

Front

What is the function of mitochondria in a cell?

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 role of chloroplasts in plant cells?

Back

Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy in the form of glucose.

Front

Define prokaryotic cells.

Back

Prokaryotic cells are single-celled organisms that lack a nucleus and membrane-bound organelles.

Front

What is the function of the cell membrane?

Back

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

Front

What is endosymbiosis?

Back

Endosymbiosis is a theory that explains how eukaryotic cells may have evolved from prokaryotic cells through a symbiotic relationship.