TLS Online TPP Program

#Question id: 13052


What would be the effect on the PCR reaction if any of the following circumstances arose: 1) there are no primers in the reaction, 2) there are no dNTPs in the reaction, 3) there is no Taq polymerase in the reaction?

#Biochemistry
  1. PCR would proceed normally
  2. Non-specific PCR of random templates will occur
  3. Non-specific PCR of random templates will occur
  4. The PCR reaction will not commence
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TLS Online TPP Program

#Question id: 40445

#Botany

 choose the Correct statements:
1. Brown algae possess fucoxanthin pigment.
2. Red algae lack chlorophyll.
3. Cyanobacteria are prokaryotic.

TLS Online TPP Program

#Question id: 40446

#Botany

Assertion–Reason
Assertion: Red algae appear red.
Reason: Presence of phycoerythrin masks chlorophyll.

TLS Online TPP Program

#Question id: 40447

#Botany

Match the staining technique/structure in List-I with the correct chemical reagent in List-II.

List-I (Technique/Structure)List-II (Reagent/Stain)
A. Endospore StainingI. Crystal Violet
B. Gram Staining (Primary)II. Malachite Green
C. Fungal Cell WallIII. Chitin (Stains with Cotton Blue)
D. Bacterial TransformationIV. DNA (Identified by Avery et al.)

TLS Online TPP Program

#Question id: 40448

#Botany

Given below are two statements regarding bacterial genetics:
Statement I: F. Griffith discovered the phenomenon of transformation using Streptococcus pneumoniae.
Statement II: In Griffith's experiment, the heat-killed S-strain was virulent and caused the death of mice when injected alone.
Choose the correct answer:

TLS Online TPP Program

#Question id: 40449

#Botany

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Nigella is not a member of the family Characeae.
Reason (R): Nigella is a genus of angiosperms (flowering plants) known for producing black cumin seeds, whereas Characeae is an algal family.
In the light of the above statements, choose the correct answer:

TLS Online TPP Program

#Question id: 40450

#Botany

Match the Algal genera in List-I with the shape of their Chloroplast in List-II.

List-I (Genera)List-II (Chloroplast Shape)
A. ChlamydomonasI. Girdle shaped
B. SpirogyraII. Reticulate (Network-like)
C. UlothrixIII. Cup shaped
D. OedogoniumIV. Ribbon shaped (Spiral)