Practice Questions

TLS Online TPP Program

#Question id: 21958

Choose the incorrect statement

#Unit 2. Cellular Organization

MARs are AT rich heterochromatic regions
MARs contain cis-acting sites that regulate transcription, 5’ introns, and a recognition site for topoisomerase II
Presence of topoisomerase II binding sites shows high degree of negative supercoiling is usually present in the MAR
Presence of topoisomerase II binding sites shows high degree of positive supercoiling is usually present in the MAR

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TLS Online TPP Program

#Question id: 29453

#Unit 6. System Physiology – Plant

Which of the following technique will be most effective for IAA concentrations of about 0.02 to 0.2 mg L–1

TLS Online TPP Program

#Question id: 29454

#Unit 6. System Physiology – Plant

Identify A, B and C in auxin synthesis

a. Tryptophan (Trp)----------A-------------→ Indole-3-pyruvic acid

b. (IPA) -----------B------------→ Indole-3-acetaldehyde (IAld)

c. Indole-3-acetaldehyde (IAld) ------------C-----------→ I3AA

TLS Online TPP Program

#Question id: 29455

#Unit 6. System Physiology – Plant

which of the following auxin derivates compound that provide broad‐spectrum control of fungal pathogens

TLS Online TPP Program

#Question id: 29456

#Unit 6. System Physiology – Plant

In maize kernels, IAA also appears to be synthesized by a tryptophan independent pathway via

TLS Online TPP Program

#Question id: 29457

#Unit 6. System Physiology – Plant

Covalent conjugation of amino acids to IAA can also result in permanent inactivation (storage or degradation), here certain combination is given (∧ shows conjugation)

a. IAA ∧ myo-inositol/Gluc/Ala/Leu/Me ---Reversible (storage)

b. IAA ∧ myo-inositol/Gluc/Ala/Leu/Me ---irreversible (degradation)

c. IAA ∧ oxIAA/GH3-Asp-Glu/3-Methyleneoxidole ---Reversible (storage)

d. IAA ∧ oxIAA/ GH3-Asp-Glu/3-Methyleneoxidole---irreversible (degradation)

Which of the following is correctly paired

TLS Online TPP Program

#Question id: 29458

#Unit 6. System Physiology – Plant

Which of the following is an essential for AUXIN transport in cell called as chemiosmotic model of auxin transport