Koch's Postulates for identifying a pathogen require all of the following EXCEPT
A) re-inoculation and production of disease.
B) sequencing the DNA of the suspect organism.
C) isolating an organism from a diseased host.
D) culturing an organism in pure form.
Answer: B) sequencing the DNA of the suspect organism.
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For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25 degrees Celsius. What can you conclude about this reaction?
A. It is exergonic B. It is endergonic C. it is a redox reaction D. It is being catalyzed by an enzyme Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know aboutenergy of reactants and products in a reaction? What other information is related to the question? Choose Answer Do you have all the information needed to make a determination about the change in free energy? 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?
The ability of a cell to pick up DNA from it's environment is known as ________
a. binary fission b. transformation c. horizontal gene transfer d. conjugation e. mitosis
What is the function of pain?
a. It causes an organism to move away from or otherwise decrease exposure to a damaging stimulus. b. It elicits a reflex response. c. It protects an organism from encountering harmful conditions. d. It works faster than conscious thought. e. It causes an organsim’s heart rate to increase to deliver more blood.
Most of the water vapor in the earth’s atmosphere
comes from evaporation from a. lakes. b. rivers. c. land. d. oceans. e. plants.