Exam 5: Cell Structure

Small proteins called ubiquitins assist the proteasomes in accomplishing their function.

Match each term to the phrase that describes it best. -Cell connections that form tunnels between cells and are found in heart muscles

Name and give the functions of the membranous organelles of the cell.

The fluid mosaic model describes the chromatin material found in the nucleus.

Ribosomes are only found attached to endoplasmic reticulum.

Gap junctions are found in the small intestine. They allow molecules to flow between cells.

Which cell fiber is called the engine of the cell?

Explain the structure and function of the microvilli.

Smooth endoplasmic reticulum is the organelle that supplies membrane material for use throughout the cell.

The cell extension that contains microfilaments is called:

Match each term to the phrase that describes it best. -Cell extensions that are shorter than flagella and are found lining the respiratory tract

Projections from the cell that move materials and mucus are called:

Match each cell structure with its corresponding description or function. -Broad, flattened sacs that extend from the nucleus and have ribosomes attached to them

Damage to the centrosome and centrioles in a cell would have the greatest impact on which cell function?

A major part of ribosomes is deoxyribonucleic acid.

The membranous structure containing substances that protect the cell from harm are:

Microtubules are sometimes called the engines of the cell.

The structure that separates the contents of a cell from the surrounding tissue is known as:

In order for the Golgi apparatus to function correctly, both the ribosomes and the rough endoplasmic reticulum must be functioning also.

Explain the structure and function of the primary cilium in the cell. Which cell type does not have a primary cilium?