GP1 Test

Front

What three terms describe the head of a phospholipid?

Back

polar, hydrophilic, made of phosphate

Front

Explain the concept of polarity in water molecules.

Back

Polarity refers to the uneven distribution of electrical charge within the molecule.

Front

What is the strongest piece of evidence supporting endosymbiotic theory?

Back

Chloroplasts and mitochondria have their own DNA, their own ribosomes, their own physiological processes, two membranes, and can divide independently.

Front

What is a rigid layer that lies outside the cell's membrane?

Back

Cell wall.

Front

Why is water essential for the transport of nutrients and waste in living organisms?

Back

Water is essential for the transport of nutrients and waste in living organisms.

Front

Define hydrophilic.

Back

Having a strong affinity for water; substances that dissolve easily in water.

Front

Define hydrophobic.

Back

Having little or no affinity for water; substances that do not dissolve in water.

Front

What is the role of the cell wall in plant cells?

Back

The cell wall provides structural support and protection to the plant cell.

Front

What is the significance of the uneven distribution of charge in water molecules?

Back

It leads to water's unique properties, such as cohesion, adhesion, and its ability to dissolve many substances.

Front

What are the main components of a phospholipid?

Back

A phosphate group, glycerol, and two fatty acid tails.