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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: 84

#Unit 1. Molecules and their Interaction Relevant to Biology

Below is the Fischer projection of D-galactose. Which is the proper Haworth projection of β-D-galactopyranose?
TLS Online TPP Program

#Question id: 98

#Unit 1. Molecules and their Interaction Relevant to Biology

The elasticity and resistance to compression of connective tissue is due to
TLS Online TPP Program

#Question id: 5534

#Unit 5. Developmental Biology

In meroblastic cleavage, cleavage happens only in the
TLS Online TPP Program

#Question id: 4733

#Unit 8. Inheritance Biology

If a homozygous plant with red peppers is crossed with a homozygous plant with green peppers, all the F1 plants have red peppers. When the F1 are crossed with one another, the F2 are in a ratio of 9 red : 3 brown : 3 yellow : 1 green  due to
TLS Online TPP Program

#Question id: 18861

#Unit 13. Methods in Biology

Which component of the compound microscope aids in the collecting and focussing of light rays on the material to be examined?