In the initial phase of glycolysis, each hexose unit is phosphorylated twice and then split, producing two molecules of triose phosphate, in these reactions included irreversible reaction. How much irreversible reaction is performed in the glycolytic pathway through in this series of reactions?

#Question id: 11378

#XL - R Botany

Which of the following set of conditions will qualify a species to be considered as critical endangered (EN) as per IUCN criteria?

#Question id: 11380

#XL - T Zoology

Which of the following is/are NOT valid explanation(s) for the observed pattern of species richness?

#Question id: 11380

#XL - R Botany

Which of the following is/are NOT valid explanation(s) for the observed pattern of species richness?

#Question id: 11382

#XL - R Botany

Ecologist has proposed following explanation to lead biodiversity at tropic.

a) Higher productivity in the tropics allows for more species

b)  Environments are more stable and predictable in the tropics, with fairly constant temperatures and rainfall levels year-round

c) Predators and pathogens limit competition in the tropics, which allows more species to coexist

d) High evolutionary speed at tropic than temperate

#Question id: 11384

#XL - R Botany

Two islands, P and Q, are similar in habitat and other features. They are 100 and 200 km2 in size respectively, but have the same number of species. Which of the following statements can independently explain this observation?

(i) P is closer to the mainland than Q

(ii) P is further away from the mainland than Q

(iii) P has higher speciation rates than Q

(iv) P has lower speciation rates than Q

#Question id: 11392

#XL - S Microbiology

Modes of obtaining nutrients, used by at least some bacteria, include all of the following except