A small lake has three trophic level – Phytoplankton(autotroph) , Zooplankton (herbivore ) and planktivorous fish ( primary carnivore) . In to this lake Population of some other primary carnivore introduced to study top down effect . What is expected long term consequence of this  introduction ?

#Question id: 452

#Unit 1. Molecules and their Interaction Relevant to Biology

E'° of the NAD+/NADH half reaction is –0.32 V.  The E'° of the oxaloacetate/malate half reaction is –0.175 V.  When the concentrations of NAD+, NADH, oxaloacetate, and malate are all 10–5 M, the “spontaneous” reaction is:

#Question id: 453

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement does not explain why many biochemical processes are carried out via multi-step pathways rather than by single-step reactions (or only a few steps)

#Question id: 454

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is false about most metabolic pathways?

#Question id: 455

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct for a step in a reaction pathway to serve as a control point

A) irreversible  B) endergonic  C) far from equilibrium

#Question id: 456

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following function is done by compartmentation of enzymes?

A) helps loss by diffusion.

B) keeps separate pools of metabolites in cells.

C) can help control metabolic pathways.

#Question id: 457

#Unit 1. Molecules and their Interaction Relevant to Biology

Which are membrane associated pathways?

A) electron transport chain in eukaryotes

B) citric acid cycle in bacteria

C) photosynthesis

D) glycolysis