Adding phosphorus to an aquatic ecosystem can result in a(n) __________ that clouds water and threatens other
aquatic species. Fill in the blank(s) with the appropriate word(s).
ANSWER: algal bloom
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Using a specific chemical, a cell biologist has blocked one type of channel-linked receptor in a lab rat's liver tissue. What was the likely mechanism of the chemical she used?
A. The chemical prohibits ions from entering the cell via active transport. B. The chemical prohibits binding of a ligand to the receptor. C. The chemical causes ions to move in the opposite direction of the ion gradient. D. The chemical prohibits second messenger signaling.
Electroporation is commonly used to introduce recombinant DNA molecules into cells.
Answer the following statement true (T) or false (F)
What will happen to a cyanobacterium that has its photosystem II (PSII) blocked?
A) Additional electron acceptors, such as NADP+, will be required to oxidize oxygen and overcome the lost PSII process. B) Anoxygenic photosynthesis only using photosystem I (PSI) could occur by using cyclic photophosphorylation and an alternative electron donor such as H2S. C) It will die from being unable to obtain energy for photosynthesis. D) Photons will generate excessive reactive oxygen species and the cyanobacterium will die as a consequence.
Creative destruction explains the deindustrialization Detroit, Milwaukee, Cleveland and Buffalo
Indicate whether this statement is true or false.