Quiz Practice: Organelles

Cell with no nucleus or membrane-bound structures.

• Prokaryote

• Nucleus

• Cell membrane

• Nucleolus

• Cell wall

Answer explanation

A prokaryote is a type of cell that lacks a nucleus and membrane-bound organelles, distinguishing it from eukaryotic cells which have these structures. Therefore, the correct answer is prokaryote.

Clear gel-like fluid in cells that holds the organelles.

• Nucleus

• Cytoplasm

• Nucleolus

• Cell membrane

• Cell wall

Answer explanation

The cytoplasm is the clear gel-like fluid within cells that surrounds and holds the organelles in place, making it the correct answer. The nucleus, nucleolus, cell membrane, and cell wall serve different functions.

Tags

NGSS.MS-LS1-2

Contains digestive enzymes to break down harmful substances.

• Nucleolus

• Nucleus

• Cell wall

• Cell membrane

• Lysosome

Answer explanation

Lysosomes contain digestive enzymes that break down harmful substances in the cell, making them essential for cellular waste disposal and recycling.

Long hair-like projection used for movement in cells; uses a whip-like motion.

• Nucleolus

• Nucleus

• Cell wall

• Cell membrane

• Flagella

Answer explanation

Flagella are long, hair-like structures that enable cell movement through a whip-like motion. This distinguishes them from other cell components like the nucleolus, nucleus, cell wall, and cell membrane, which do not serve this function.

Network of proteins found within the cytoplasm for support and structure.

• Nucleus

• Cell wall

• Cell membrane

• Cytoskeleton

• Nucleolus

Answer explanation

The cytoskeleton is a network of proteins in the cytoplasm that provides support and structure to the cell, making it the correct answer. The other options do not serve this structural role.

Where DNA is stored in a eukaryotic cell.

• Nucleus

• Cell membrane

• Cell wall

• Nucleolus

• Ribosome

Answer explanation

In eukaryotic cells, DNA is primarily stored in the nucleus, which serves as the control center for the cell. Other options like the cell membrane, cell wall, nucleolus, and ribosome do not store DNA.

Organelle that hugs the nucleus and has ribosomes attached to it.

• Cell wall

• Rough ER

• Nucleolus

• Nucleus

• Cell membrane

Answer explanation

The Rough ER (Endoplasmic Reticulum) is an organelle that surrounds the nucleus and is characterized by the presence of ribosomes on its surface, which gives it a 'rough' appearance. This distinguishes it from other organelles.

Tags

NGSS.MS-LS1-2

Firm, fairly rigid structure found outside of plants for support.

• Cell wall

• Ribosome

• Cell membrane

• Nucleus

• Nucleolus

Answer explanation

The cell wall is a firm, rigid structure found outside of plant cells, providing support and protection. It is distinct from the cell membrane, which is more flexible and found in all cell types.

Breaks down food into usable energy in a process called cellular respiration.

• Nucleus

• Mitochondria

• Cell membrane

• Nucleolus

• Cell wall

Answer explanation

The mitochondria are known as the powerhouse of the cell, where cellular respiration occurs, breaking down food into usable energy. Other options like the nucleus and cell membrane do not perform this function.

Tags

NGSS.MS-LS1-7

Storage for the cell.

• Nucleus

• Vacuole

• Nucleolus

• Cell membrane

• Cell wall

Answer explanation

The vacuole is the storage organelle in a cell, responsible for storing nutrients, waste products, and other materials. Unlike the nucleus, which contains genetic material, the vacuole primarily serves a storage function.

Tags

NGSS.MS-LS1-2