Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?

#Question id: 26888

#Unit 10. Ecological Principles

#Question id: 2877

#Unit 2. Cellular Organization

What is the superhelical density of a closed-circular DNA with a length of 4,200 bp and a linking number (Lk) of 374? What is the superhelical density of the same DNA when Lk = 412? Are these molecules negatively or positively supercoiled?

A. The molecule is getting negatively supercoiled.

B. The molecule is getting positively supercoiled.

C. The superhelical density is positive.

D. The superhelical density is negative.

Which of the combinations of the above statements are correct?

#Question id: 19819

#Unit 12. Applied Biology

Gene for gene relationship is mainly found in which type of pathogens

#Question id: 28694

#Unit 2. Cellular Organization

Which one of the following was first identified through mutations in the yeast gene and encoding a protein called Sec61α?

#Question id: 1232

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?

a. excess production of erythropoietin                       

b. decreased production of erythropoietin

c. EpoR that cannot bind STAT5                  

d. EpoR that cannot bind SHP1

e. EpoR that cannot bind JAK2