Two Types of Cell and the Cell Membrane

Multiple Choice

When did life on earth first evolve?

• About 1 billion years ago
• Around 2.5 billion years ago
• Approximately 500 million years ago
• Approximately 3.5 billion years ago

Labelling

Label the parts of the bacteria cell.

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Cell Membrane

Genetic Material

Ribosomes

Cell Wall

Cytoplasm

Multiple Choice

Which of the following best describes the endosymbiotic theory?

• The theory that all cells originated from a single ancestral cell.
• The theory that prokaryotic cells are more complex than eukaryotic cells.
• The theory that eukaryotic cells evolved from symbiotic relationships between prokaryotic cells.
• The theory that eukaryotic cells do not contain any organelles.

Multiple Choice

Why is the cell membrane referred to as the fluid mosaic model?

• Because of its flexible structure and the diverse arrangement of structures.

• The cell membrane is static and does not change its composition.
• The fluid mosaic model describes only the lipid bilayer without other structures.

• The cell membrane is rigid and does not allow movement.

Multiple Choice

The phosphate head of a phospholipid is ____________ and the fatty acid tail is _______________.

• hydrophobic; hydrophilic
• hydrophilic; hydrophilic
• hydrophobic; hydrophobic
• hydrophilic; hydrophobic

Multiple Choice

You blood type is determined by what structure found on the surface of cells?

• transport proteins

• phospholipids

• cholesterol

• glycoproteins

Labelling

Label the cell membrane.

Drag labels to their correct position on the image

Cholesterol

Phospholipid

Channel Protein

Hydrophobic Tail

Hydrophilic head

Glycoprotein