How does a signal molecule bring about specific changes in the cell to which it binds?
What will be an ideal response?
When a signal molecule binds to a surface receptor, the molecular structure of the receptor is changed
so that it transmits the signal across the cell membrane, consequently activating the cytoplasmic end of
the receptor. The activated receptor then initiates the first step in a cascade of molecular events that
triggers a cellular response.
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Before Title IX was enforced, one myth that authorities embraced about women’s participation in competitive sports was that
a. Soviet women's gender had to be verified clinically b. their marriageability would be jeopardized c. black athletes were superior to white athletes d. There reproductive organs would be harmed
Certain plants that grow in environments where their roots are often under water need to provide ways of getting which of the following to the roots?
A. carbon dioxide B. carbon monoxide C. hydrogen D. nitrogen E. oxygen
Consider the role of hormones in plant defense to microbes. How does ethylene control the production of receptors that detect bacterial flagella?
What will be an ideal response?
Ethanol is inferior compared to many energy sources because it has only:
What will be an ideal response?