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TLS Online TPP Program

#Question id: 580

In a first order chemical reaction, the velocity of the reaction is proportional to the ________, while in a zero order reaction, the velocity of the reaction is proportional to the ________.

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. amount of enzyme; concentration of substrate

  2. concentration of substrate; amount of enzyme

  3. concentration of substrate; speed of the reaction

  4. speed of the reaction; concentration of substrate

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TLS Online TPP Program

#Question id: 15149

#Unit 8. Inheritance Biology

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.
Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?
TLS Online TPP Program

#Question id: 12621

#Unit 10. Ecological Principles

Often the growth cycle of one population  has an  effect on  the cycle  of  another. As  moose populations  increase, wolf populations also increase. Thus, if we are considering the  logistic equation for the wolf population,

hich of the factors accounts for the effect on the moose population?
TLS Online TPP Program

#Question id: 31196

#Unit 4. Cell Communication and Cell Signaling

Which of the following signalling pathway that perform functions to regulate the actin and microtubule cytoskeleton, & influences cell shape and behaviour?
TLS Online TPP Program

#Question id: 5706

#Unit 8. Inheritance Biology

Species A has 2n = 16 chromosomes and species B has 2n = 14. How many chromosomes would be found in an allotriploid of these two species?
TLS Online TPP Program

#Question id: 10724

#Unit 10. Ecological Principles

This example is based on the hypothetical ( x means Present), compare species diversity within different community Which one of the


following conclusions is most appropriate based on the above observations?

A) The beta diversity between the community X and Y is 5

B) The gamma diversity for the these communities are 14

C) The beta diversity between the community X and Z is greater than Y and Z

D) Community Y has minimum Alpha diversity among community