Exam 3: Life Is Cellular

Match the following cellular structures with their primary function (you may need to use a function more than once). -rough endoplasmic reticulum

A white blood cell (WBC) encounters bacteria in a scrape on the knee of a child who has fallen off of his bicycle. The WBC's job is to take the bacteria inside of itself and destroy the bacteria. If the bacteria cannot be moved across the WBC membrane, how will the WBC most likely take it in?

The smooth endoplasmic reticulum

All cells have a ________ that acts as a barrier separating the cellular components from the external environment.

Cells naturally, without using energy, respond to changes in water concentration through the process of

An amoeba, a protozoan that moves by pseudopodia, approaches a smaller protozoan and extends its pseudopodia (extensions of cytoplasm in plasma membrane) around the smaller protozoan. Once the amoeba's pseudopodia completely surrounds the other protozoan, the amoeba's plasma membrane pinches off by folding back into the amoeba and creating a vesicle containing the smaller protozoan. This vesicle is now within the amoeba itself and will soon fuse with other vesicles containing digestive enzymes. This is an example of

Which of the following would be likely to require facilitated diffusion to move across the plasma membrane?

Using the compound light microscope in the lab room, you observe a wet mount slide preparation. You observe layers of cells that have a definite, rigid, rectangular shape; there appears to be a nucleus in all of the cells and there are many oval-shaped green structures that seem to be moving around inside of the cells in an orderly fashion. What general cell type are you most likely observing?

Which of the following would be the best analogy for the function of the Golgi apparatus?

There are cells in your pancreas that produce insulin, a peptide hormone important in the regulation of blood sugar levels by adjusting the metabolism of sugars and fats. Once the pancreas cells have produced the initial peptide (small string of amino acids) component of insulin, it must be finished, packaged, and shipped out of the cell. Which organelles would likely be involved in this process of finishing, packaging, and shipping of a peptide hormone? Include a brief, general description of what happens to the hormone at each organelle.

Viruses use their ________ material to take over their host cell's metabolic machinery to produce the components needed for the virus to reproduce.

Which of the following help increase the selective permeability of a phospholipid bilayer membrane?

Match the following cellular structures with their primary function (you may need to use a function more than once). -smooth endoplasmic reticulum

A cell containing a nucleus, mitochondria, Golgi apparatus, both smooth and rough ER, ribosomes, cytoskeleton, a large vacuole, and chloroplasts would be an example of a typical ________ cell.

Phospholipids are large organic molecules with a ________, polar phosphate head connected to ________, nonpolar fatty acid tails. How do these molecules arrange themselves to form a mostly impermeable barrier between a liposome and its environment?

Why do scientists repeat their experiments over and over again?

The flexible poles providing structure to a soft-sided tent most closely resemble the

Match the following cellular structures with their primary function (you may need to use a function more than once). -cytoskeleton

Indicate which cell in this figure is the plant cell and which is the animal cell. Label all cellular structures 1-12 in both cells. Include a very brief description of each organelle's function with its label. Use an asterisk to indicate which structures are unique to plant cells.

A screen door allows breezes to enter and aromas to exit but keeps out insects. Its function most resembles