A plant wilts when ____
a. the soil water becomes hypotonic with respect to the cytoplasm
b. the soil water becomes hypertonic with respect to the cytoplasm
c. the turgor inside the cell increases
d. the turgor in the soil disappears
e. osmotic pressure is equal to the turgor pressure
ANSWER: b
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An -NH2 group is a(n) ____ group
a. carboxyl b. hydroxyl c. amine d. methyl e. carbonyl
We can detect the SNP in the ?S allele because it destroys a DdeI restriction site, leading to DNA restriction fragment variation revealed by Southern blot analysis
Either two or three restriction sequences for the restriction endonuclease DdeI can occur near the ?-globin gene, depending on the allele. One DdeI restriction sequence is eliminated from the ?S allele by the SNP in the mutant allele because of a mutation in the double-stranded target sequence 5? - CTNAG - 3?. Suppose the wild-type allele sequence is CCTGAG, while a newly identified SNP is CCTTAG. Would this same restriction fragment analysis technique be appropriate for detecting this particular SNP? What other technique(s) could you use to identify this particular mutation?
In commensalism ________.
A. the host and commensal cannot be separated and remain viable and the commensal is metabolically dependent on the host B. the commensal is metabolically dependent on the host C. the host and commensal can be separated and remain viable D. the host provides some factor that the commensal cannot get otherwise
You and your partner respond to a local Chinese restaurant to treat a person who is having difficulty breathing. The patient is a 46-year-old male who is pale, diaphoretic, dyspneic, and complaining of nausea. He also indicates his chest is very tight. His face and neck are swelling. His meal was chicken fried in oil, but he does not know what kind of oil was used. Based on this information, what do you suspect is the problem?
A) Allergic reaction B) Anxiety C) Asthma attack D) Anaphylaxis