In all cases, it is necessary for disease-causing microorganisms to grow in a food to result in disease transmission to humans.
Answer the following statement true (T) or false (F)
False
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Large external polysaccharides are degraded by bacteria and archaea using ________ ________, which they secrete outside the cell.
Fill in the blank(s) with the appropriate word(s).
Racker and Stoeckenius used synthetic phospholipid membrane vesicles that contained a light-activated protein pump
and ATP synthase to test Mitchell's chemiosmotic hypothesis. What was the conclusion of this experiment?
a. Phospholipid membrane vesicles require a proton gradient to maintain integrity. b. ATP synthase is powered by the proton-motive force. c. ATP synthase can generate a proton gradient. d. Light-activated proton pumps can generate a proton gradient. e. Light-activated proton pumps interact with ATP synthase to modulate its activity.
Addison's disease results when the body overproduces cortisol and aldosterone.
a. true b. false
Lions and tigers can interbreed and produce offspring called tiglons or ligers, which have normal life spans but are sterile. Lions and tigers remain isolated genetically because of
A) mechanical incompatibility. B) heterozygote disadvantage. C) hybrid infertility. D) hybrid inviability. E) behavioral isolation.