For innate and adaptive immunity to work together, these two systems must be able to communicate with one another. This communication is achieved by both cell-cell contact and by soluble messengers. Most of these soluble proteins are growth factor–like molecules known by the general name cytokines. Which of these molecule can work as communicator between innate and adaptive immunity?

TLS Online TPP Program

#Question id: 33898

#Unit 2. Cellular Organization

E. coli cell has 4,639,675 bp have a contour length of about 1.7 mm and E. coli cell is 1µm is length. What can be correctly inferred from this data.

TLS Online TPP Program

#Question id: 33899

#Unit 2. Cellular Organization

A. In E.coli, a natural closed DNA that is negatively supercoiled.

B. The intercalation of ethidium bromide first removes the negative supercoils and then introduces positive supercoils.

TLS Online TPP Program

#Question id: 33900

#Unit 2. Cellular Organization

A. Bacterial genome have many independent chromosomal domains

B. Bacterial genome is circular and have many intertangled domains 

C. Each domain consists of 40 kilobases (k2. of DNA 

D. The existence of separate domains donot permit different degrees of supercoiling to be maintained in different regions of the genome.

Find true and false

TLS Online TPP Program

#Question id: 33904

#Unit 2. Cellular Organization

A. The bacterial nucleoid is 80% DNA by mass.

B. Bacteria have similar morphological features as of eukaryotic chromosomes, 

C. Bacterial genomes are organized into definite substructures within the cell. 

D. Bacterial Protein HU is a dimer that condenses DNA, possibly wrapping it into a beadlike structure.

Find true and false

TLS Online TPP Program

#Question id: 33905

#Unit 2. Cellular Organization

E. coli DNA in vivo corresponds to an average density of 1 negative superhelical turn/200 bp it means it has 

TLS Online TPP Program

#Question id: 33906

#Unit 2. Cellular Organization

Which is correct combination of statements

A. Bacterial genome has independent sets of domains and each domain consists of a loop of DNA.

B. Presence of domain in genome can be analyzed by EtBR intercalation and DNase treatment 

C. Early data suggested that each domain consists of 10kb-40 kb of DNA