03 Cell Structure and Organization Online Quiz Questions

Which function best describes the plasma membrane in both prokaryotic and eukaryotic cells?

A microscope image is enlarged substantially, but two nearby structures still appear as one blurry feature. Which microscope property most directly limits the observation?

A cell has ribosomes and a circular chromosome, but no membrane-bound nucleus. In which region would its main chromosome be located?

Which two structures work together most directly in producing and processing a protein destined for secretion from a eukaryotic cell? Select all correct choices.

Which two features help a typical plant cell maintain its shape and internal pressure? Select all correct choices.

True or false: Conventional electron microscopy can directly show a living cell carrying out its normal activities.

True or false: When a cell becomes larger, its surface-area-to-volume ratio generally increases, making exchange with the environment more efficient.

A compound microscope has a 10× ocular lens and a 40× objective lens. What is the total magnification? Enter the value; the answer is expressed in multiples of ×.

A researcher wants to investigate the internal membrane layers and cristae of mitochondria in prepared cells. Which type of electron microscopy should be used, and why would the other major type be less appropriate?

A plant cell is exposed to light and produces sugars through photosynthesis. Which organelle contains the pigments that capture the light energy?

Four cells span the diameter of a microscope field whose calibrated diameter is 1,000 μm. Assuming the cells are aligned end to end, what is the approximate length of one cell? Enter the value in micrometres (μm); no tolerance is allowed.

Which substance would most likely cross a cell's phospholipid bilayer relatively easily without the assistance of a transport protein?

A student needs to observe living, unstained cells and distinguish their general boundaries. Which microscopy method is most appropriate?

Which observation would provide the strongest evidence that an unknown cell is prokaryotic?

A cell is producing a protein that will be secreted outside the cell. Which structure should receive the newly synthesized protein first?

True or false: Conventional electron microscopy can routinely show living cells because electrons pass through them without requiring specimen preparation.

A compound light microscope has a 10× ocular lens and a 40× objective lens. What is the total magnification?

A plant cell is placed in a hypertonic solution, loses water, and its plasma membrane and cytoplasm pull away from the cell wall. What is this process called?