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TLS Online TPP Program

#Question id: 1369

The following statements are made with reference to characteristics of glycosaminoglycans and proteoglycans, which are major constituents of extracellular matrix. Which one of them is incorrect?

#Unit 4. Cell Communication and Cell Signaling

  1. Glycosaminoglycans are long linear polymers of specific repeating disaccharides. Usually one sugar is either a uronic acid or d-galactose; the other sugar is N-acetylglucosamine or N-acetylgalactosamine.

  2. Proteoglycan core proteins are synthesized in the endoplasmic reticulum, and the GAG chains are assembled on and covalently attached to these cores in the Golgi complex.

  3. All GAG chains are elongated by the alternating addition of sugar monomers to form the disaccharide repeats characteristic of a particular GAG; the chains are often modified subsequently by the covalent linkage of small molecules such as sulfate.

  4. The ratio of polysaccharide to protein in all proteoglycans is much lower than that in most other glycoproteins.

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TLS Online TPP Program

#Question id: 10662

#Unit 10. Ecological Principles

Growth model of logistic with 1000 carrying capacity and exponential with ideal condition is related to initial population. (Value of rmax = .25)


A) In Logistic growth value of X should be maximum at 1000

B) In Exponetial growth value of X should be maximum at 1000

C) In Logistic growth value of X should be maximum at 500

D) In Exponential growth value of X should be constant over size of population
TLS Online TPP Program

#Question id: 10663

#Unit 10. Ecological Principles

Following is a hypothetical life table of species


Following some statement is given

A- This type of life table is characteristic of species that produce a large number of offspring

B- Its greatest mortality early in life, with relatively low rates of death for those surviving this bottleneck

C. It is characterized by high age-specific survival probability in early and middle life, followed by a rapid decline in survival in later life

D. This includes k selected species

Which of the following above statement is correct?
TLS Online TPP Program

#Question id: 10664

#Unit 10. Ecological Principles

dN/dt = rN (K-N/K ) The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. What is value of per capita growth rate when population size is 200 individuals? ( K= 400, r =.25)
TLS Online TPP Program

#Question id: 10665

#Unit 10. Ecological Principles

Complete the following hypothetical life table of a species. 


Initial population size is 1000. What will be population size in next generation?


TLS Online TPP Program

#Question id: 10666

#Unit 10. Ecological Principles

In a experimental invertebrate population the birth rate is 1200 per 1000 and death rate is 300 per 1000 per generation. Initial population size is 10000. What is value of NET reproductive rate?
TLS Online TPP Program

#Question id: 10667

#Unit 10. Ecological Principles

Which of the following is correct statement?

A) The average number of offspring that female producing during life time is called NET reproductive rate

B) The number of birth minus the number of death per generation time called called per capita growth rate

C) The average number of female offspring that female producing during life time is called NET reproductive rate

D) The average number of offspring that breeding male and female producing during life time is called NET reproductive rate