Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation. 

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#Question id: 27043

#Unit 10. Ecological Principles

Predator has carrying capacity

Following some observation are given

The number of prey, N, increase at low predator densities, P, and decrease at high predator densities

Prey zero isoclines is depends on the ratio of the growth rate of prey to the capture efficiency of the predators

 Number of predator needed for prey isoclines is depends on the ratio of the death rate of predators to the conversion efficiency of predators

Number of predator for prey isoclines depends on the ratio of the death rate of prey to the conversion efficiency of predators

Which of the above observation are true?

TLS Online TPP Program

#Question id: 27044

#Unit 10. Ecological Principles

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000           KB = 1200    α of B= 1     β of A= .5       rB= .5         r A= .3                

AN= 500                  BN= 200

According to the Lotka-Voltera model, what is growth rate of species A?

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#Question id: 27060

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement out of the followings

TLS Online TPP Program

#Question id: 27061

#Unit 1. Molecules and their Interaction Relevant to Biology

According to the Fischer projection which of the following is correct regarding the given fig.

TLS Online TPP Program

#Question id: 27062

#Unit 1. Molecules and their Interaction Relevant to Biology

Determine R and S Configurations On A Fischer Projection given below 

TLS Online TPP Program

#Question id: 27063

#Unit 1. Molecules and their Interaction Relevant to Biology

Determine R and S Configurations On A Fischer Projection given below