Cell Structure and Microscopy

To enter or leave a cell, substances must pass through

• a microtubule.
• the Golgi apparatus.
• a ribosome.
• the nucleus.
• the plasma membrane.

Bacterial cell are prokaryotic; in comparison to a typical eukaryotic cell they would

• be smaller.
• have a smaller nucleus.
• lack a plasma membrane.
• have fewer internal membranous compartments.
• have a greater variety of organelles.

You would expect a cell with an extensive Golgi apparatus to

• make a lot of ATP.
• secrete a lot of material.
• move actively.
• perform photosynthesis.
• store large quantities of food

Which of the following correctly matches an organelle with its function?

• mitochondrion . . . photosynthesis
• nucleus . . . cellular respiration
• ribosome . . . manufacture of lipids
• lysosome . . . movement
• central vacuole . . . storage

Of the following organelles, which group is involved in manufacturing substances needed by the cell?

• lysosome, vacuole, ribosome
• ribosome, rough ER, smooth ER
• vacuole, rough ER, smooth ER
• smooth ER, ribosome, vacuole
• rough ER, lysosome, vacuole

A cell has mitochondria, ribosomes, smooth and rough ER and a cell wall. Based on this information, it could not be

• a cell from a pine tree.
• a cell from moss.
• a yeast (fungus) cell.
• a bacterium.
• Actually, it could be any of the above.

The electron microscope has been particularly useful in studying bacteria, because

• electrons can penetrate tough bacterial cell walls.
• bacteria are so small.
• bacteria move so quickly they are hard to photograph.
• with few organelles present, bacteria are distinguished by differences in individual macromolecules.
• their organelles are small and tightly packed together

Which of the following clues would tell you whether a cell is prokaryotic or eukaryotic?

• the presence or absence of a rigid cell wall
• whether or not the cell is partitioned by internal membranes
• the presence or absence of ribosomes
• whether or not the cell carries out cellular metabolism
• whether or not the cell contains DNA

Sara would like to film the movement of chromosomes during cell division. Her best choice for a microscope would be a

• light microscope, because of its resolving power.
• transmission electron microscope, because of its magnifying power.
• scanning electron microscope, because the specimen is alive.
• transmission electron microscope, because of its great resolving power.
• light microscope, because the specimen is alive.

Which of the following is a common feature of all cells?

• Intracellular organelles.
• A lipid cell membrane.
• A nuclear membrane.
• An RNA genome.