A cluster of tumor cells that produces and secretes growth factors to induce surrounding cells to grow and divide is showing which type of cell-to-cell signaling?

TLS Online TPP Program

#Question id: 1107

#Unit 4. Cell Communication and Cell Signaling

Viagra causes dilation of blood vessels and increased blood flow to the penis, facilitating erection. Viagra acts by inhibiting which of the following events?

TLS Online TPP Program

#Question id: 3030

#Unit 2. Cellular Organization

Which of the following features of prokaryotic biology involves metabolic cooperation among cells?

TLS Online TPP Program

#Question id: 29027

#Unit 11. Evolution and Behavior

Which of the following is not the characteristics of fixed action pattern?

TLS Online TPP Program

#Question id: 4210

#Unit 3. Fundamental Processes

Which statement is true about the attenuation mechanism of regulation?

TLS Online TPP Program

#Question id: 11392

#Unit 9. Diversity of Life Forms

Modes of obtaining nutrients, used by at least some bacteria, include all of the following except