Pepsin is a digestive enzyme. It is made in an inactive form, pepsinogen, which is activated by the acidity of the stomach to self-cleave (cut itself) into a formed called the cleaved molecule. This cleaved molecule is active pepsin, which goes on to cleave more pepsinogen molecules, leading to a cascade of rapid pepsin activation (and many more active pepsin molecules). This pathway is an example of:
Pepsin is a digestive enzyme. It is made in an inactive form, pepsinogen, which is activated by the acidity of the stomach to self-cleave (cut itself) into a formed called the cleaved molecule. This cleaved molecule is active pepsin, which goes on to cleave more pepsinogen molecules, leading to a cascade of rapid pepsin activation (and many more active pepsin molecules). This pathway is an example of:
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1) A paper towel is to its cardboard roll as the myelin sheathis to the_______________ .
soma | ||
dendrite | ||
Schwann cell | ||
axon |
2) When the membrane of an axon is at resting potential, whichof the following is true?
The exterior of the cell has a net negative charge and theinterior has a net positive charge. | ||
The exterior of the cell has a net negative charge and theinterior is neutral. | ||
The exterior of the cell has a net positive charge and theinterior has a net negative charge | ||
The exterior of the cell has a net positive charge and theinterior is neutral. |
3) A man standing in a park is talking to a friend 3 feet awayand then turns to look at a dog 50 yards away. How does the eyeadapt to allow him to clearly see these two different images?
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The lens is moved backward | |||||||||||||||
The lens is moved forward. | |||||||||||||||
4) Pepsin is a digestive enzyme. It is made in an inactive form,pepsinogen, which is activated by the acidity of the stomach toself-cleave (cut itself) into a formed called the cleaved molecule.This cleaved molecule is active pepsin, which goes on to cleavemore pepsinogen molecules, leading to a cascade of rapid pepsinactivation (and many more active pepsin molecules). This pathway isan example of:
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