Practice Questions

TLS Online TPP Program

#Question id: 27101

Choose the incorrect regarding γ-turns

#Unit 1. Molecules and their Interaction Relevant to Biology

It consists of 3 amino acids, generally termed as i, i + 1 and i + 2
It joints two anti-parallel β
H-bond is seen between i and i + 2 (First and Third residue)
H-bond is seen between i and i + 1 (First and second residue)

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TLS Online TPP Program

#Question id: 29117

#Unit 6. System Physiology – Plant

Light reactions of photosynthesis are carried out by four major protein complexes: Photosystem I (PSI), photosystem II (PSII), the cytochrome b6f complex and ATP synthase. The following are certain statements on PSII:

a. Red light absorbed by photosystem II (PSII) produces a strong oxidant and a weak reductant.

b. Far-red light absorbed by photosystem II (PSI) produces a weak oxidant and a strong reductant.

c. The strong oxidant generated by PSII oxidizes water,

d. The strong reductant generated by PSII oxidizes water

Which one of the following combinations of the above statements is correct?

TLS Online TPP Program

#Question id: 27513

#Unit 2. Cellular Organization

Which of the following chemical reagent is used to measure the effect of nicking the DNA

TLS Online TPP Program

#Question id: 10543

#Unit 6. System Physiology – Plant

Effectors are molecules that change the plant’s structure, metabolism, or hormonal regulation to the advantage of the pathogen, which of the following is effector molecules?

TLS Online TPP Program

#Question id: 3762

#Unit 3. Fundamental Processes

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

TLS Online TPP Program

#Question id: 4759

#Unit 8. Inheritance Biology

which of the following is not a mechanism for sex determination?