Unit 2B Test Review

In which types of cells are mitochondria found?

• Only in plant cells

• Only in animal cells

• In both plant and animal cells

• In prokaryotic cells only

Ribosomes are present in:

• Only plant cells

• Only animal cells

• Prokaryotic and eukaryotic cells

• Only in the nucleus of eukaryotic cells

Which organelles are found in plant cells but not in animal cells?

• Mitochondria and ribosomes

• Chloroplasts, cell wall, and large central vacuole

• Golgi apparatus and lysosomes

• Cell membrane and nucleus

How does the DNA of prokaryotic cells differ from that of eukaryotic cells?

• Prokaryotic DNA is circular and free-floating, while eukaryotic DNA is inside a nucleus.

• Prokaryotic DNA is inside a nucleus, while eukaryotic DNA is free-floating.

• Prokaryotic DNA is stored in mitochondria, while eukaryotic DNA is stored in ribosomes.

• Prokaryotic DNA is made of RNA, while eukaryotic DNA is made of DNA.

What happens to a plant cell placed in a solution with a solute concentration much higher than inside the cell?

• It will swell because water enters by osmosis.

• It will shrink because water leaves by osmosis.

• It will swell because solutes enter by diffusion.

• It will shrink because solutes leave by active transport.

What is the main role of lysosomes in the cell?

• Store water and nutrients

• Break down and recycle materials

• Produce proteins

• Package and ship molecules

What is the function of the central vacuole in plant cells?

• Produces energy for the cell

• Stores water and helps keep the cell rigid

• Breaks down old cell parts

• Transports proteins through the cell

How do the rough endoplasmic reticulum and Golgi apparatus work together?

• Rough ER produces proteins and Golgi packages and ships them.

• Rough ER stores water and Golgi recycles waste.

• Rough ER makes energy and Golgi stores DNA.

• Rough ER breaks down lipids and Golgi makes ribosomes.

What are the major roles of lipids in cells?

• Short-term energy storage and protein production

• Long-term energy storage and making up membranes

• Making DNA and transporting nutrients

• Breaking down waste and forming ribosomes

Why is water called a “versatile solvent”?

• It can dissolve many substances, allowing them to be transported.

• It provides long-term energy storage.

• It captures sunlight for photosynthesis.

• It helps build cell walls.