Cell Structure Quiz

Which of the following is true about prokaryotic cells?

• They have membrane-bound organelles.

• They contain a nucleus

• Their DNA is found in the cytoplasm, not a nucleus.

• They are typically larger than eukaryotic cells.

Answer explanation

Prokaryotic cells lack membrane-bound organelles and a nucleus. Their DNA is located in the cytoplasm, distinguishing them from eukaryotic cells, which have a nucleus.

Which structure is present in eukaryotic cells but absent in prokaryotic cells?

• Ribosomes

• Cell membrane

• Cytoplasm

• Nucleus

Answer explanation

The nucleus is a membrane-bound organelle that houses genetic material, distinguishing eukaryotic cells from prokaryotic cells, which lack a nucleus. Ribosomes, cell membranes, and cytoplasm are present in both cell types.

Which of the following is a characteristic of eukaryotic cells?

• Absence of a nucleus

• Large size compared to prokaryotic cells

• No DNA

• No organelles

Answer explanation

Eukaryotic cells are generally larger than prokaryotic cells, which is a key characteristic. They also contain a nucleus and organelles, while the other options incorrectly describe eukaryotic cells.

According to Mr. Lamar, Drake is not like us. However, Mr. Lamar would have to admit, Drake’s cells are most likely which of the following?

• Prokaryotic

• Eukaryotic

Answer explanation

Drake, being a complex organism, has eukaryotic cells. Eukaryotic cells are characterized by a nucleus and organelles, unlike prokaryotic cells, which are simpler and lack a nucleus.

Tags

NGSS.MS-LS1-1

Which part of a compound light microscope controls the amount of light shining on an object?

• coarse adjustment

• diaphragm

• fine adjustment

• objective lens

Answer explanation

The diaphragm is the part of the microscope that controls the amount of light shining on the object being observed, allowing for better visibility and contrast.

Which part produces a magnified image of an objective through the eyepiece?

• coarse adjustment

• diaphragm

• fine adjustment

• objective lens

Answer explanation

The objective lens is responsible for producing a magnified image of the specimen. It gathers light and focuses it to create a clear image that is viewed through the eyepiece.

Which microscope part is responsible for controlling the amount of light in a microscope?

• coarse adjustment

• diaphragm

• fine adjustment

• objective lens

Answer explanation

The diaphragm is the part of a microscope that controls the amount of light entering the lens system. It adjusts the light intensity, which is crucial for viewing specimens clearly.

Which organelle makes ribosomes?

• Ribosome

• Nucleolus

• Mitochondria

• Cytoplasm

• Golgi Apparatus

Answer explanation

The nucleolus is the organelle responsible for producing ribosomes. It synthesizes ribosomal RNA (rRNA) and assembles it with proteins to form ribosomal subunits, which are then transported to the cytoplasm for protein synthesis.

Tags

NGSS.MS-LS1-2

Which of the following structures is not found in an animal cell?

• cell membrane

• cell wall

• chloroplast

• both b & c

Answer explanation

Animal cells do not have a cell wall or chloroplasts. The cell wall is found in plant cells, while chloroplasts are involved in photosynthesis, which animal cells do not perform.

Which structure is found in both prokaryotic and eukaryotic cells?

• nucleus

• vesicle

• cell membrane

• vacuole

Answer explanation

The cell membrane is a fundamental structure present in both prokaryotic and eukaryotic cells, serving as a barrier that regulates the movement of substances in and out of the cell. The other options are not found in prokaryotic cells.