Staphylococcus epidermidis isolated from your nose or throat may be playing a protective role in your body.
A) True
B) False
A) True
Feedback: This answer is true, Staphylococcus epidermidis may play a protective role in its host as normal flora.
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What features of meiosis allow for independent assortment of chromosomes?
A. random alignment of homologous sister chromatids on the metaphase plate B. separation of sister chromatids C. reduction of chromosome number from diploid to haploid D. both the separation of sister chromatids and the reduction of chromosome number from diploid to haploid E. All of these features allow for the independent assortment of chromosomes.
You and your neighbor each have a holly bush in your yards. You carefully water and care for your bush, but it fails to produce berries. Your neighbor, on the other hand, neglects his holly, yet it produces gorgeous red berries each year. Finally, in frustration, you replace your holly with a rose bush. The next year, your neighbor’s holly bush has no berries at all. What happened?
A. Roses compete for the same insect pollinators as holly bushes. B. Holly plants are dioecious. Yours was a male that was needed to pollinate the neighbor’s female. C. Roses secrete a chemical that inhibits the reproduction of neighboring plants. D. The neighbor’s bush became infected with the same disease that yours had. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about dioecious plants? What other information is related to the question? Choose Answer Given what you now know, what information 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 the stimulus is large enough at the trigger zone, the membrane potential reaches ____, and an action potential begins
a. positive charge b. maximum voltage c. resting potential d. threshold potential e. minimum ionic concentration gradient
All of the following bacteria are part of the normal flora EXCEPT:
A. Salmonella spp. B. Bacteroids spp. C. Lactobacillus spp. D. Staphylococcus spp. E. Viridans streptococci