Which of the following statements is false?
A) Immunofluorescence is when fluorochromes bind to a specific target and fluoresce after exposure to UV light.
B) Fluorochromes can be natural or synthetic.
C) Scanning electron microscopy provides information about surface structures.
D) Transmission electron microscopy provides information about internal structures.
E) Fluorescence microscopy is when fluorochromes stain a sample so it will fluoresce when exposed to UV light.
Answer: A
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Explain why one cell of a pathogenic bacterium by itself typically does not secrete a toxin, despite the species as a whole being characterized as toxin producing
To help in your explanation, predict what would happen to an individual pathogen that secreted a toxin inside a human. What will be an ideal response?
Which of the following is caused by Haemophilus influenzae in the respiratory tract?
A. Otitis media B. Epiglottitis C. Bronchitis D. Bacterial meningitis E. Influenza (flu)
The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.The conclusion drawn from these results is that the length of the dark period, not the light period, controls flowering.
Answer the following statement true (T) or false (F)
The honeyguide is an African bird that leads humans to bees' nests and thereby gains access to a resource that it could otherwise not exploit. In this actual case, there is no incentive for honeyguides to cheat
Could you alter this system in a way that would give the honeyguide an incentive to provide misleading in-formation? Briefly explain how your alteration gives an incentive to cheat. Fictional alteration: Explanation: What will be an ideal response?