What is the induced-fit model? List the types of bonds involved and classify them as strong or weak.
What will be an ideal response?
The interaction between a protein binding site and a ligand that are in close proximity results in a conformational change of the protein to fit more closely to the ligand. The bonds involved are hydrogen (weak), ionic (strong), and
van der Waals (weak).
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Factors such as adenosine and catecholamines alter heart rate by affecting the kinetics of
A) Voltage-sensitive Cl-channels. B) Voltage-sensitive Na+channels. C) Funny channels. D) Voltage-independent K+channels.
Which of the following is an excitatory neurotransmitter in the brain?
A. Gamma-aminobutyric acid (GABA) B. Aspartate C. Glutamate D. Glycine E. Lipofuscin
How many flaps of tissue does a tricuspid valve have?
A) one B) two C) three D) four
What is the most lethal genetic disorder among Caucasians in the United States?
A. Down syndrome B. Cystic fibrosis C. Tay-Sach's disease D. Spina bifida