Bacterial endospores are medically important because
A) they are susceptible to antibiotics.
B) they resist ordinary cleaning and sanitizing methods.
C) all spore-forming bacteria are pathogenic.
D) all of the above.
Ans: B) they resist ordinary cleaning and sanitizing methods.
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While touring the ancient Egypt exhibit at the local history museum, you learn that ancient Egyptians would slash figs in order to stimulate ripening. Based on your knowledge of plant hormones you hypothesize that wounding the figs must release:
A. abscisic acid. B. gibberellin. C. indoleacetic acid. D. ethylene. E. cytokinin. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about fruit ripening? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
If an aerobic organism stopped taking in
oxygen gas, which of the following processes would stop first?
a. the splitting of glucose into two pyruvates b. the reduction of NAD+ to NADH c. the release of carbon dioxide d. electron transfer phosphorylation e. the initiation of the Krebs Cycle
A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most probable cause of the child's condition?
A) The woman inherited this tendency from her parents. B) The mother had a chromosomal duplication. C) One member of the couple underwent nondisjunction in somatic cell production. D) The mother most likely underwent nondisjunction during gamete production.
Answer the following questions true (T) or false (F)
1. A population that grows by an unvarying number of new units added to the population per unit of time is undergoing exponential growth. 2. Arithmetic growth will produce a faster population increase over time than an exponential growth curve. 3. The carrying capacity of an environment can cause a population initially growing very quickly to level off, resulting in an S-shaped curve.