TLS Online TPP Program

#Question id: 4602


If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?

#Zoology
  1. These genes would be maintained in case the antibiotics appear.

  2. These bacteria would be outcompeted and replaced by bacteria that have lost these genes.

  3. These bacteria would try to make the cost worthwhile by locating and migrating to microenvironments where traces of antibiotics are present.

  4. The number of genes conveying antibiotic resistance would increase in these bacteria.

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TLS Online TPP Program

#Question id: 40169

#Environmental Science

 Which of the following is an example of Ex-situ conservation?

TLS Online TPP Program

#Question id: 40170

#Environmental Science

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Acid rain causes damage to historical monuments made of marble (like the Taj Mahal).
Reason (R): Sulfur dioxide in the air reacts with calcium carbonate in marble to form calcium sulfate (Gypsum), causing the stone to flake off.
In light of the above statements, choose the correct answer:

TLS Online TPP Program

#Question id: 40171

#Environmental Science

 The "Nagoya Protocol" is related to which of the following?

TLS Online TPP Program

#Question id: 40172

#Environmental Science

Match the Instrument (List I) with its Application (List II):

LIST I (Instrument)LIST II (Application)
A. Atomic Absorption Spectrophotometer (AAS)I. Separation of Volatile Organic Compounds (VOCs)
B. Gas Chromatography (GC)II. Analysis of Heavy Metals (Pb, Hg, Cd)
C. X-Ray Diffraction (XRD)III. Determination of Crystal Structure of Minerals
D. Spectrophotometer (UV-Vis)IV. Analysis of Phosphate/Nitrate in water
Choose the correct option:

TLS Online TPP Program

#Question id: 40173

#Environmental Science

"Eutrophication" in a water body is primarily caused by the excess enrichment of:

TLS Online TPP Program

#Question id: 40174

#Environmental Science

In the context of plate tectonics, the San Andreas Fault is an example of which type of plate boundary?