Arrange the statements below in the proper sequence of events that occur in an action potential:

I. The resting potential is re-established.

II. A stimulus depolarizes the membrane to threshold.

III. Na+ gates open and Na+ rushes into the cell.

IV. K+ gates open and K+ rushes out of the cell.

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#Question id: 1406

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a consequence of p53 stabilization?

a. stabilization of Cdc25A      b. activation of ATM                c. blocked apoptosis

d. transcription of p21                        e. DNA repair

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#Question id: 1821

#Unit 4. Cell Communication and Cell Signaling

P-selectin pairs with:

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#Question id: 3715

#Unit 3. Fundamental Processes

DNA polymerase III requires a/an ________ for synthesis of DNA to occur.

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#Question id: 28454

#Unit 5. Developmental Biology

A researcher performed an experiment during vulva formation in C.elegans;

I- In first experiment destroyed anchor cell 

II- In second experiment destroyed three central VPCs 

What kind of conclusion has been drawn by these experiments?

a) I-Three cells out of six of the equivalence group divide once and contribute to the vulva formation

b) I-all six cells of the equivalence group divide once and contribute to the hypodermal tissue

c) II-three outer cells, which normally form hypodermis, generate vulval cells instead

d) II-three remaining cells normally formed hypodermis as usually

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#Question id: 12221

#Unit 7. System Physiology – Animal

Juvenile (type I) diabetes mellitus is often diagnosed because of polyuria (high urine flow) and polydipsia (frequent drinking) that occur because of which of the following?