Amphotericin B from Streptomyces spp. binds to the sterols in fungal membranes, disrupting membrane permeability and causing leakage of cell constituents.
Answer the following statement true (T) or false (F)
True
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The following question(s) relate to the data table below, showing typical fluctuating pH and dissolved oxygen levels in a fish pond with a heavy concentration of algae over a 24-hour period.TimeOxygen (ppm)pH2 a.m.4.57.74 a.m.2.87.26 a.m.2.26.88 a.m.2.56.810 a.m.3.97.2Noon6.57.72 p.m.10.08.34 p.m.12.18.86 p.m.13.19.28 p.m.13.09.210 p.m.12.08.8Midnight10.88.3You are investigating a massive fish kill in one of the shallow lakes in the area. Lab reports show no toxins in the water, but a monitoring station reported these oxygen and pH values. Based on the table above, what, if any, is the relationship between oxygen and pH?
A. No relationship: there is no pattern between oxygen and pH B. Exponential relationship: when one increases, the other increases 10 to 100 times C. Inverse relationship: when one increases, the other decreases D. Direct relationship: when one increases, the other also increases
The structures in the micrograph are:a
chloroplasts.
b. cilia.
c. rough ER.
d. flagella.
e. B and D.
What is the primary driving force for the binding of oxygen to hemoglobin?
A) PO2 B) PCO2 C) pH D) temperature E) 2,3-bisphosphoglycerate (2,3-BPG)
Which of the following activities could lead to a decrease in the genetic diversity in the gene pool of a species?
A. an increase in the reproductive rate, which results in increased population size B. a decrease in the size of the population from millions to hundreds C. the absence of mutations D. the species switches from asexual reproduction to sexual reproduction