Q. Consider the following statements regarding the physical principles governing the movement of molecules:

Statement I: Force represents the driving tendency for a physical or chemical process.

Statement II: A concentration difference induces the movement of molecules from a region of low concentration toward a region of high concentration.

Statement III: The concentration gradient serves exclusively as the driving force for active transport.

Statement IV: During diffusion, molecules spontaneously move from a region of high concentration to a region of low concentration due to the existing concentration gradient.

Which of the following combinations of statements is correct?

TLS Online TPP Program

#Question id: 1462

#Unit 4. Cell Communication and Cell Signaling

In a healthy eukaryotic cell, the rate of DNA repair is typically equal to the rate of DNA mutation. When the rate of repair lags behind the rate of mutation, what is a possible fate of the cell?

TLS Online TPP Program

#Question id: 1463

#Unit 4. Cell Communication and Cell Signaling

In colorectal cancer, several genes must be mutated for a cell to develop into a cancer cell. Which of the following kinds of genes would you expect to be mutated?

TLS Online TPP Program

#Question id: 1464

#Unit 4. Cell Communication and Cell Signaling

Which of the following types of mutation would convert a proto-oncogene into an oncogene?

TLS Online TPP Program

#Question id: 1465

#Unit 4. Cell Communication and Cell Signaling

Which of the following processes do normal proto-oncogenes typically exhibit?

TLS Online TPP Program

#Question id: 1466

#Unit 4. Cell Communication and Cell Signaling

Which of the following functions does the product of the p53 gene carry out?

TLS Online TPP Program

#Question id: 1467

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements correctly describes a characteristic of tumor-suppressor gene?