Cells and Classification

Which structure is found in the cytoplasm of a prokaryotic cell, but is not found in the cytoplasm of a eukaryotic cell?

• DNA

• ribosomes

• nucleus

• mitochondria

A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified?

• The cell is prokaryotic because it has DNA.

• The cell is prokaryotic because it has cytoplasm.

• The cell is eukaryotic because it has a cell membrane.

• The cell is eukaryotic because it has chloroplasts.

What is the basic unit of structure and function of all living organisms?

• mitochondrion

• DNA

• nucleus

• cell

A student wonders whether removing the nucleus from a cell would result in a new prokaryotic cell. Why would this procedure fail to produce a prokaryotic cell?

• The cell would lack genetic information.

• The cell would lack the structure that is needed to produce energy.

• The cell would lack the structure that is needed to protect the cell’s organelles.

• The cell would lack control over materials that move into and out of the cell.

Which structure is unique to eukaryotic cells?

• DNA

• cell membrane

• ribosomes

• nucleus

A scientist is studying a cell and can clearly see that it has ribosomes and mitochondria. Which statement best describes how the cell could be classified?

• The cell is prokaryotic because it contains ribosomes.

• The cell is prokaryotic because it contains mitochondria.

• The cell is eukaryotic because it contains ribosomes.

• The cell is eukaryotic because it contains mitochondria.

Which is a function of the cell membrane?

• performs photosynthesis

• controls what enters and leaves the cell

• produces proteins

• provides energy to the cell

Which organelle is used as temporary storage for water, waste products, food, and other cellular material?

• mitochondrion

• lysosome

• centriole

• vacuole

Which term describes an extensive network of tubes, sacs, and vesicles throughout a cell that provides transport as its main function?

• cell membrane

• endoplasmic reticulum

• centriole

• cell wall

Which organelle captures the energy from sunlight and converts it to chemical energy, and in which cells could it be found?

• the Golgi apparatus, which can be found in lung cells of animals

• lysosomes, which can be found in all cells of grasses

• ribosomes, which can be found in muscle cells of humans

• chloroplasts, which can be found in leaf cells of trees