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TLS Online TPP Program

#Question id: 1439

Indirect-acting carcinogens are those that:

#Unit 4. Cell Communication and Cell Signaling

  1. chemically react with nitrogen and oxygen atoms in DNA.

  2. can modify bases in DNA so as to distort the normal pattern of base pairing.

  3. are mainly reactive electrophiles.

  4. generally unreactive, often water-insoluble compounds that can act as potent cancer inducers only after the introduction of electrophilic centers.

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TLS Online TPP Program

#Question id: 1375

#Unit 4. Cell Communication and Cell Signaling

Four ECM ubiquitous protein components, each of which comprises multiple, distinct, repeating domains, are found in basal laminae. Given below are a list of some extracellular matrix (ECM) proteins in column A and their characteristics in column B.

Column A

Column B

a. Type IV collagen

i. a large multidomain proteoglycan that binds to and cross-links many ECM components and cell-surface molecules.

b. Laminins

ii. a rodlike molecule that cross-links type IV collagen, perlecan, and laminin, which

helps incorporate other components into the ECM and also stabilizes basal laminae.

c. Perlecan

iii. a family of multi-adhesive, cross-shaped proteins that form a fibrous two-dimensional network with type IV collagen and that also bind to integrins and other adhesion

receptors.

d. Nidogen

iv. trimeric molecules with both rodlike

and globular domains that form a two-dimensional network.

Which one of the following is the most appropriate match?
TLS Online TPP Program

#Question id: 11990

#Unit 10. Ecological Principles

Imagine that you are designing an experiment aimed at determining whether the initiation of migratory behavior is largely under genetic control. Of the following options, the best way to proceed is to
TLS Online TPP Program

#Question id: 11922

#Unit 10. Ecological Principles

Which of the following environmental features might influence microclimates? 
TLS Online TPP Program

#Question id: 1281

#Unit 4. Cell Communication and Cell Signaling

Which of the following is the term used to describe a thin, sheet-like meshwork of extracellular matrix components that can be found in epithelial cells?
TLS Online TPP Program

#Question id: 52

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect option regarding Isomerism.