When photosynthetic pigments are extracted from the chloroplasts of green plants, they have a higher
tendency to fluoresce than pigments within intact chloroplasts. Explain this phenomenon. What will be an ideal response?
Concepts to Consider: Extracted pigments are removed from the thylakoid membranes where other
components of the electron transport chain are located. This causes the uncoupling of the pigment
molecules from electron acceptors, which results in a greater likelihood of fluorescence than in
coupled pigment-acceptor systems
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The unconventional dsDNA genome replication mechanism where no lagging strand exists is a hallmark of which group of viruses?
A) adenoviruses B) coronaviruses C) herpes viruses D) pox viruses
An advantage to studying linkage disequilibrium is that ________
A) it provides another tool enabling the reconstruction of the history of genes and populations B) it provides clear evidence of speciation events C) it can be used to identify alleles that have been recently selected by natural selection D) Both A and C.
When the immune systems no longer distinguishes between self and nonself, _____ can result
a. autoimmunity b. anaphylaxis c. viral infections d. minor allergic reactions e. enhanced immune response
Which compound provides a slippery consistency in the lungs preventing the alveoli walls from sticking together?
A) oxygen B) carbon dioxide C) surfactant D) respiratory pigments