Why should we (multicellular organisms) care about cell division?
What will be an ideal response?
We need it to grow.
We need it to replace dead or damaged cells.
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Research does not indicate a link between the numbers and types of bacteria causing periodontitis and thicker carotid arteries in an individual.
Answer the following statement true (T) or false (F)
Which of the following is not known to be involved in associating actin microfilaments with plasma membranes?
A) PIP2 B) spectrin C) ankyrin D) band 4.1 E) A, B, C, and D are involved in associating actin microfilaments with plasma membranes.
Which of the following could be used to demonstrate a homeostatic mechanism?
a. city buses transporting people from their houses to their jobs b. water stored behind a dam being released to make electricity c. a hot water heater keeping the water temperature near 100 degrees d. a series of underground passageways connected to a large building e. the seasonal changes that occur in the daily temperature
Which bacterial trait is NOT useful for experiments in evolution?
a. The ancestral organism can be frozen and compared to the evolved descendant. b. Bacterial populations are large and reproduce quickly. c. Selective pressure on bacteria is easily manipulated. d. Some bacteria are naturally transformable.