What does it mean to say that a signal is transduced?
A) The signal enters the cell directly and binds to a receptor inside.
B) The physical form of the signal changes from one form to another.
C) The signal is amplified, such than even a single molecule evokes a large response.
D) The signal triggers a sequence of phosphorylation events inside the cell.
Answer: B
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Island biogeography predicts that a single large area would have higher biodiversity than several small areas. However, in practice, several small areas could have an advantage for what reason(s)? Check all that apply.
_____ Facilitating the spread of disease _____ Decreasing extinction risk from natural disasters _____ Being less expensive _____ Containing more habitat types _____ Minimizing edge effects
In cell fractionation, which cellular structure or molecule is isolated in a pellet after the first centrifugation?
a. nuclei b. mitochondria c. ribosomes d. proteins e. nucleic acids
A Venus fly trap’s niche in an ecosystem is as
a ________.
a. producer b. primary consumer c. second-level consumer d. producer and primary consumer e. producer and second-level consumer
What is an allele-specific oligonucleotide?
What will be an ideal response?