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TLS Online TPP Program

#Question id: 678

Which is not true about β-sheets?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The side-chains of all amino acids point to the same side of the sheet.

  2. The polypeptide chains in the sheet are nearly fully extended.

  3. The range of allowed phi and psi angles is broader than for those in the α-helix.

  4. In antiparallel sheets the hydrogen bonds between adjacent strands are nearly perpendicular to the backbones of the strands.

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TLS Online TPP Program

#Question id: 5327

#Unit 8. Inheritance Biology

In the human pedigree shown here, the daughter indicated by the black circle (II-1) has a form of deafness determined by a recessive allele. What is the probability that the phenotypically normal son (II 3) is heterozygous for the gene?
TLS Online TPP Program

#Question id: 20409

#Unit 3. Fundamental Processes

Introns may more freely accumulate point substitutions and other changes due to 
TLS Online TPP Program

#Question id: 20286

#Unit 7. System Physiology – Animal

Except for that portion of the insulin that combines with receptors in the target cells, the remainder is degraded by the enzyme _____?
TLS Online TPP Program

#Question id: 785

#Unit 1. Molecules and their Interaction Relevant to Biology

Several types of very short RNAs repress—or silence—expression of genes with homology to those short RNAs. They are produced from a variety of sources and direct the silencing of genes in the following different ways-
TLS Online TPP Program

#Question id: 23750

#General Aptitude

My ten years old niece is taller than my twelve years old son