TLS Online TPP Program

#Question id: 549


Which one of the following statements is true of enzyme catalysts?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. They bind to substrates, but are never covalently attached to substrate or product.

  2. They increase the equilibrium constant for a reaction, thus favoring product formation.

  3. They increase the stability of the product of a desired reaction by allowing ionizations, resonance, and isomerizations not normally available to substrates.

  4. They lower the activation energy for the conversion of substrate to product.

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TLS Online TPP Program

#Question id: 10638

#Unit 10. Ecological Principles


Following some statement is given

A- Mortality rate constant over age group 

B- Greater proportional survival at older age

C. Follow type III survivorship curve

D. Follow type II survivorship curve

Which of the following above statement is correct?

TLS Online TPP Program

#Question id: 10639

#Unit 10. Ecological Principles

The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?

 


A) Species 1 follow type I survival ship curve

 B) Species 2 follow type III survival ship curve

 C) Species 1 show parental care of offspring

 D) Species 2 showed large size of offspring than species 1

TLS Online TPP Program

#Question id: 10640

#Unit 10. Ecological Principles

Given below is a graphical representation of plant life histories based on Grime's model in which disturbance and competition are the important factors


Which of the following options correctly represents A, B and C, respectively in the figure above?


TLS Online TPP Program

#Question id: 10641

#Unit 10. Ecological Principles

The size of the population (N) is estimated as follows, what is parameter of M, S and R respectively? 



TLS Online TPP Program

#Question id: 10642

#Unit 10. Ecological Principles

Which curve best describes survivorship in a songbirds and marine crustacean that molts respectively?

 


TLS Online TPP Program

#Question id: 10643

#Unit 10. Ecological Principles

Population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02) Estimate the number of individuals added to (or lost from) a population of 1,000 individuals in one year.