Which assay is available to identify F. tularensis serologically?
a. Complement fixation
b. Direct fluorescent antibody test
c. Immunodiffusion assays
d. Enzyme-linked immunosorbent assays (ELISAs)
D
Because of the risk of infection to laboratory personnel and other inherent difficulties with cul-ture, the diagnosis of tularemia is usually serologically accomplished by whole-cell agglutination, that is, by febrile agglutinins or newer ELISA techniques.
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If a normal diploid germ cell in a bird has eight chromosomes, then
a. there are eight homologous pairs of chromosomes per diploid germ cell. b. there are eight chromatids per diploid germ cell after DNA replication. c. there are four chromosomes per cell after the first meiotic division and cytokinesis. d. sperm cells made from this diploid germ cell would have eight chromosomes. e. there are eight copies of each chromosome in this diploid germ cell.
There is a molecule in black licorice that inhibits an enzyme which normally limits activation of mineralocorticoid receptors. Thus, overconsumption of licorice can mimic the effect of excess aldosterone. What would be the result?
A. infertility in men B. hypertension (high blood pressure) due to insufficient potassium in the blood C. excessive body hair D. low blood pressure due to excessive potassium in the blood 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 the aldosterone? 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?
Briefly describe the ecological importance of coastal seas
What will be an ideal response?
How would acidification of seawater affect marine organisms? Acidification of seawater would _____
A) increase dissolved carbonate concentrations and promote faster growth of corals and shell-building animals B) decrease dissolved carbonate concentrations and promote faster growth of corals and shell-building animals C) increase dissolved carbonate concentrations and hinder growth of corals and shell-building animals D) decrease dissolved carbonate concentrations and hinder growth of corals and shell-building animals