Habitat: Human Stomach
What will be an ideal response?
•For many years, doctors thought the stomach was free of microbes.
•However, some bacteria do colonize the stomach, particularly areas where pH is higher.
•Stomach is coated with a mucin layer that protects stomach lining.
•pH in the mucin layer ~ 7, colonization by bacteria and fungi (~200 taxa).
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character is a
a. clade. b. taxon. c. tribe. d. community. e. population
An action potential is an abrupt and transient change in the membrane potential of an excitable cell
1.True 2.False
Which of these statements about hypertension
is false? a. Blood pressure remains above 140/90 even at rest. b. Poor diet and lack of regular exercise puts one at increased risk. c. It may contribute to atherosclerosis. d. Most Americans with the disorder seek treatment. e. It tends to run in families
Consider the contribution of NADH and FADH2. How many of the 38 total ATP molecules produced in cellular respiration come from the citric acid cycle?
a. 20 b. 22 c. 28 d. 32