How does the cell membrane act as a "gatekeeper" for the cell?
What will be an ideal response?
It separates the internal and external cell environments, it regulates the exchange of substances between the external environment and the cytoplasm, and it allows for communication between cells.
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In response to larval insect grazing, some plants produce substances known as precocenes, which destroy the part of the insect brain that secretes juvenile hormone. What effect would exposure to precocenes have on insect development?
A. The larval insect would molt into an adult prematurely. B. The larval insect would not be able to produce ecdysone. C. The larval insect would molt into larger and larger larval stages. D. The larval insect would not be able to molt. E. The time interval between successive molts would increase.
Glial cells support and nourish neurons
____________________ Indicate whether the statement is true or false.
Explain how and why healthcare epidemiology programs are essential to quality care
What will be an ideal response?
A good drug against HIV, a class VI retrovirus, and class VII viruses in general should target
a. the reverse transcriptase because both virus types depend on this enzyme to replicate their genomes. b. the replicative form because both virus types need this to successfully replicate. c. both a and b. d. neither a nor b.