Which one of the following fungus causes infected rice shoots to grow much faster relative to uninfected plants and responsible for the “foolish seedling disease” of rice?

TLS Online TPP Program

#Question id: 1224

#Unit 4. Cell Communication and Cell Signaling

Put the steps of the process of signal transduction in the order they occur.

1. A conformational change in the signal-receptor complex activates an enzyme.

2. Protein kinases are activated.

3. A signal molecule binds to a receptor.

4. Target proteins are phosphorylated.

5. Second messenger molecules are released.

TLS Online TPP Program

#Question id: 1126

#Unit 4. Cell Communication and Cell Signaling

Which of the following statement(s) is (are) true of the α subunit of a G protein?

a. It physically associates with the receptor.              

b. It binds GDP.

c. It binds GTP.                     

d. It is a transmembrane protein.

TLS Online TPP Program

#Question id: 1455

#Unit 4. Cell Communication and Cell Signaling

MicroRNAs are a new class of oncogenic factors because they function:

TLS Online TPP Program

#Question id: 15183

#Unit 13. Methods in Biology

When in a gel more Joule heat is produced than can be dissipated, the temperature in the middle of the gel is higher than at the lateral edges. This causes higher mobility of the ions in the center, resulting in an uneven distribution of the zones. The zones bend up at the two lateral sides, causing

TLS Online TPP Program

#Question id: 19280

#Unit 9. Diversity of Life Forms

In which of the following taxa does the mature sporophyte depend completely on the gametophyte for nutrition?