Capacities of the sperm gain after capacitation involve__

a) CatSper calcium channels to sense calcium influx and monitor the direction of the current

b) recognizing the cues that will guide them to the egg

c) undergoing the acrosome reaction

d) fusing with the egg cell membrane

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#Question id: 29442

#Unit 6. System Physiology – Plant

Some of the following statement are given regarding MoFe protein

(a) 2 pairs of identical subunits (tetramer, nif D & nif K)

(b) A total of MW 180 ~ 235kD

(c) Each subunit has 2 Mo-Fe-S clusters.

(d) MoFe proteins are insensitive to O₂

Which of the following is incorrect

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#Question id: 29443

#Unit 6. System Physiology – Plant

The nitrogenase enzyme complex has the characteristics listed below

(a) Fe protein is connected to ferredoxin

(b) Fe protein is involved in ATP Hydrolysis 

(c) MoFe protein is involved in the oxidation of N2 to NH3 

(d) MoFe protein is involved in the reduction of N2 to NH3

Which of the following is true

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#Question id: 29444

#Unit 6. System Physiology – Plant

Flavonoids, the prominent inducers of rhizobial nod gene expression, here  Flavonoid inducers Category along with their name and activity is mentioned

Flavonoid inducers Category	Name/activity
1. Flavone	A. Naringenin, a flavanone active on R. leguminosarum bv. viciae
2. Chalcone	B. Daidzein, an isofavone active on B. japonicum
3. Isoavone	C. 4,4’-Dihydroxy-2’- methoxychalcone, a chalcone inducer from Medicago
4. Flavanone	D. Luteolin, a flavone inducer from Medicago spp., active on S. meliloti

Match them correctly

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#Question id: 29445

#Unit 6. System Physiology – Plant

Nod factors predominantly have

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#Question id: 29446

#Unit 6. System Physiology – Plant

The binding of Nod factors to the Nod factor receptors (NFRs), which contain

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#Question id: 29447

#Unit 6. System Physiology – Plant

The interaction between NFR and SYMRK initiates