Exam 3: The Cell: The Fundamental Unit of Life

Select the image that is representative of an idealized plant cell.

Which bag is expected to be the heaviest at the end of the experiment?

Which cellular structure is unique to plant cells?

Which of the following is not located in the nucleus?

Substances are often packaged into small ________ for transport,either through the membrane or throughout the interior of the cell.

The bacteria that cause tooth decay have a capsule.What does this tell you about the relative effectiveness of a toothbrush with stiff bristles and one with soft bristles?

The cytoskeleton has several primary functions.The first and most obvious is it acts as an interior skeleton that supports the rest of the cell.What is another function of the cytoskeleton?

It is sometimes jokingly said that you could study for your biology test by placing your textbook under your pillow at night and thereby learn by osmosis as the knowledge would flow from the book to your brain while you slept.Aside from the obvious absurdity of this claim,what is wrong with the use of the word "osmosis" in this context? How might you lose knowledge (if knowledge could actually flow along a concentration gradient between a book and a brain)if you tried this technique?

Although exceptions probably exist for practically every rule of biology,which of the following statements is typically false?

What is the role of carbohydrates in the plasma membrane?

What evidence would support the hypothesis that larger cells evolved in part by engulfing other,smaller cells.

Some proteins are small and simple while others are large and complex.Where are the large and complex proteins assembled?

What information is used to assemble the amino acid sequence of a polypeptide?

Where in the cell would you find the cytosol?

Which structure selectively regulates the transport of substances into and out of a plant cell?

Which bag should weigh approximately the same at the end of the experiment as it did at the beginning of the experiment?

Which structure is common to both prokaryotic and eukaryotic cells?

Which reaction represents cellular respiration?

Which type of cell,if any,does not have a plasma membrane?

Which form of transport requires the expenditure of energy?