Life Science Chapter 3

Four of the five organelles listed below are part of the endomembrane system. Select the exception.

Smooth ER Rough ER Golgi bodies Vesicles ***Mitochondria***

Four of the five answers listed below are organelles in the cytoplasm. Select the exception.

***Nucleolus*** Mitochondrion Ribosome Golgi apparatus Chloroplast

No animal cell has a _____.

Cell wall.

Plasmodesmata are

Cross-connections between cell walls.

These are the primary structures for the packaging of cellular secretions for export from the cell.

Golgi bodies.

Which organelle can be considered a sorting, processing and packaging center?

Golgi complex.

Which strategy is most effective for larger cells to have an effective surface area to volume ratio?

Having thin, finger-like projections.

These contain enzymes and are the main organelles of intracellular digestion.

Lysosomes.

Prokaryotic cells do NOT have

Membrane-bound nuclei.

Which of the following is a key component of the cytoskeleton?

Microtubules.

What is one cellular characteristic found in all prokaryotic and eukaryotic cells?

Plasma membrane.

If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?

Protein synthesis.

What does the nucleolus, within the nucleus, synthesize?

Ribosomal RNA.

These structures are the primary cellular sites for the production of proteins.

Ribosomes.

Every cell is descended from another cell. This idea is part of _____.

The cell theory

Four of the five answers listed below can be found in both prokaryotes and eukaryotes. Select the exception.

Cell wall Cytoplasm Plasma membrane Ribosomes ***Vesicles***

One portion of the cell theory states that

All living organisms are made up of one or more cells.

Why is it advantageous for cells to be small?

A small cell has a small volume relative to surface area, thereby increasing efficient transport.

ATP is produced in

Both chloroplasts and mitochondria.

The smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____.

Cell membranes.

Which cellular structure is correctly matched to the role it plays within the cell?

Centrosome−cell division.

Which of the following are common in plants but not in animals?

Chloroplasts and central vacuoles.

Which process is a function of peroxisomes?

Detoxification