TLS Online TPP Program

#Question id: 463


Thioesters are similar to oxygen esters of carboxylic acids except that

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. the energy associated with their hydrolysis is much less than that of the phosphoanhydride in ATP.

  2. they are more stable at neutral pH values in cells.

  3. they are less stable because S is present instead of O in the linkage.

  4. they are used in glycolysis and the citric acid cycle.

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TLS Online TPP Program

#Question id: 24517

#Unit 10. Ecological Principles

A specific kind of parasitism proposes that  in which cuckoos or cowbirds repeatedly check their host’s nests and destroy all eggs if their owner is not present. If the parasite egg has been removed, they destroy the host’s nest and kill or injure the nestlings, this is an example of;

TLS Online TPP Program

#Question id: 24518

#Unit 10. Ecological Principles

Some nonnative parasites are introduced deliberately for the biological control of pests, which of the following are necessary attributes of a good agent of biological control?
a. low rate of increase relative to the host’s
b. Good dispersal ability
c. High searching capacity for hosts
d. Minimal time lag effects
e. Maximal time lag effect
f. General adaptability to the environment

TLS Online TPP Program

#Question id: 27003

#Unit 10. Ecological Principles

In competitive species N1 and N2, four individuals of N2 use the same resource as one individual of N1. According to the conversion factor, what is the value of the per capita competitive effect of N2 on N1(α) and per capita effect of N1 on N2 ( β) respectively?

TLS Online TPP Program

#Question id: 27004

#Unit 10. Ecological Principles

In Lotka and Voltera’s two species competition model: Where N represents population size, r growth rate and K maximum carrying capacity for species 1 and 2. The interspecific competition coefficient α12 <1will mean:

TLS Online TPP Program

#Question id: 27005

#Unit 10. Ecological Principles

Which of the following is correct about interaction?

TLS Online TPP Program

#Question id: 27006

#Unit 10. Ecological Principles

Which of these statements about dinoflagellates is false?