5. Which of the following is NOT a function of a protein? A. Proteins can transp

Question

5. Which of the following is NOT a function of a protein? A. Proteins can transport molecules against a concentration gradient B. Proteins can lower the activation energy of chemical reactions. C. Proteins can help transport vesidles across a cell. D. Proteins can help cells adhere to other cells E. All of the above are functions of proteins. 6, A cers membrane potential is mainly due to A. Potassium ions exiting the cell via channels embedded in the cell's membrane. B. Sodium ions entering the cell via active transport. C. The higher concentration of potassium ions outside the cell. D. Sodium ions exiting the cell via channels embedded in the cell's membrane. E. There is more than one correct answer above. 7. Digitalis is a drug that inhibits the sodium potassium pump within a specific cell type Cells of this type will most likely than cells not inhibited by digitalis Have a higher concentration of potassium in the cytosol Have a higher concentration of sodium outside the cytosol. A. B. C Have less of a charge differential between the inside and outside of the ce D. E. plasma membrane. Have more of a charge differential between the inside and outside of the cell plasma membrane. There is more than one correct answer above. Sodium Glucose Co-transporter (SGLT), are proteins that can be found in the plasma membranes of cells of the small intestines. The transporters bring glucose into the cell against its concentration gradient. According to what you have learned, this is most likely done by 8. A. Utilizing an ATP molecule directly since sodiurn and glucose are being brought into the cell against their concentration gradient. B. Utilizing potential energy from the glucose molecule to bring in the sodium ion. Binding to both sodium and glucose before transporting both across the membrane C. D. Using an ATP molecule directly to bring in glucose against its concentration gradient while bringing in sodium down its concentration gradient. E. There is no correct answer above.

Explanation / Answer

Answer to Q5:

Proteins play diverse roles from being transporting molecules to enzymes. They also act as coat proteins during vesicle transport.

Thus, correct choice is

Ans6: E- more than one option is correct above.

And 7: E

Ans 8 : E

E. All of the above are function of protein.

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