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TLS Online TPP Program

#Question id: 1044

Are all fungi detrimental (bad) for other organisms?

#Unit 4. Cell Communication and Cell Signaling

  1. Yes-think of molds that destroy plant crops, or fungal infections that cause athlete's foot. All fungi are bad for organisms they colonize.

  2. Yes-fungi feed directly on organic material (oftentimes killing it or feeding on it after the original organism has died). As such, they are always bad for other organisms.

  3. No-fungi are sometimes good, sometimes bad for other organisms. It really depends on which fungus you're talking about and the relationship it has with the other organism. Some fungi, for example, can form a symbiotic relationship with plant roots that increases their nutrient and water absorption. This is good.

  4. No-fungi are ALWAYS good when they interact with other organisms. There's never a downside or negative aspect to such interactions. Both sides always benefit from the relationship.

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TLS Online TPP Program

#Question id: 33897

#Unit 2. Cellular Organization

Which of the following is correct combination
A. Translocation is an active process in which the DNA is driven into the head by an ATP independent mechanism. 
B. The genome is packaged into the empty capsid by the terminase enzyme.
C. The terminase uses cos sites in linear phage DNA by cleaving at cos sites.
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