Understanding Prokaryotic Cells

Prokaryotic cells, primarily found in bacteria, are simple cells that evolved before the nucleus. They lack double-membraned organelles like the nucleus and mitochondria. Their DNA is a single, circular chromosome, termed 'naked' due to minimal protein association. Prokaryotic cells have unique ribosomes and may contain small organelles like vacuoles. They possess a cell membrane often surrounded by a cell wall or capsule. Movement is facilitated by flagella, which rotate like an outboard motor, unlike the undulating motion in eukaryotic cells.

What type of organisms are prokaryotic cells primarily associated with?

• Animals

• Plants

• Bacteria

• Fungi

What does the term 'prokaryote' imply about the cell's structure?

• It has multiple chromosomes

• It lacks a nucleus

• It has double-membraned organelles

• It has a nucleus

How many chromosomes do prokaryotic cells typically have?

• Two

• Multiple

• One

• None

What is unique about the ribosomes found in prokaryotic cells?

• They are smaller and different from eukaryotic ribosomes

• They are not present in prokaryotic cells

• They are larger than eukaryotic ribosomes

• They are identical to eukaryotic ribosomes

What is the primary function of the cell wall in prokaryotic cells?

• To provide structural support

• To store nutrients

• To conduct photosynthesis

• To transport proteins

What is the composition of the prokaryotic cell wall?

• Cellulose

• Bacterioglycan

• Chitin

• Lignin

How do prokaryotic cells move using their flagella?

• By rotating like an outboard motor

• By sliding

• By undulating

• By contracting

What is the role of the capsule in some prokaryotic cells?

• To aid in movement

• To protect against harsh environments

• To conduct photosynthesis

• To store genetic material

Which of the following is NOT a feature of prokaryotic cells?

• Unique ribosomes

• Presence of a nucleus

• Single circular chromosome

• Cell wall