Practice Questions

TLS Online TPP Program

#Question id: 7126

What is the role of stem cells with regard to the function of adult tissues and organs?

#Unit 5. Developmental Biology

Stem cells are undifferentiated cells that divide asymmetrically, giving rise to one daughter that remains a stem cell and one daughter that will differentiate to replace damaged and worn out cells in the adult tissue or organ.
Stem cells are embryonic cells that persist in the adult, and can give rise to all of the cell types in the body.
Stem cells are determined cells that reside in fully differentiated tissues and can, when needed, differentiate to supply new cells for growth of the tissue.
Stem cells are differentiated cells that have yet to express the genes and proteins characteristic of their differentiated state, and do so when needed for repair of tissues and organs.

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TLS Online TPP Program

#Question id: 12985

#Unit 10. Ecological Principles

An ecological footprint is a construct that is useful

TLS Online TPP Program

#Question id: 12986

#Unit 10. Ecological Principles

Infant mortality and life expectancy at birth in developed and developing countries.

What is a logical conclusion that can be drawn from the graphs above?

TLS Online TPP Program

#Question id: 12987

#Unit 10. Ecological Principles

The observation that members of a population are uniformly distributed suggests that

TLS Online TPP Program

#Question id: 12988

#Unit 10. Ecological Principles

Population ecologists follow the fate of same-age cohorts to

TLS Online TPP Program

#Question id: 12989

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement related to hydrogen bond and Van der Waals interactions

a. Hydrogen bond formation takes place between dipole-dipole interaction.

b. Van der waals interaction takes place between induced dipole-induced dipole.

c. Hydrogen bond formation takes place between induced dipole-induced dipole.

d. Van der waals interaction takes place between dipole-dipole interaction.

TLS Online TPP Program

#Question id: 12990

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement related to ionic interactions

a. Ionic interactions takes place between positively and negatively charged amino acids side chain.

b. Ionic interactions takes place between positively and positively charged amino acids side chain.

c. ionic interaction has almost 20 kj/mol of bond energy.

d. ionic interaction is weak interaction that have lowest 20kj/mol of bond energy.

e. strength of ionic bond within protein chain calculated by