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TLS Online TPP Program

#Question id: 5300

What is metagenomics?

#Unit 9. Evolution & Diversity of Life Forms

  1. genomics as applied to a species that most typifies the average phenotype of its genus

  2. the sequencing of one or two representative genes from several species

  3. the sequencing of only the most highly conserved genes in a lineage

  4. sequencing DNA from a group of species from the same ecosystem

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TLS Online TPP Program

#Question id: 10320

#Unit 1. Structure and Function of Biomolecules

Following statements are regarding to archaeal lipids.
A. archaea have membrane lipids containing long-chain (32 carbons) branched hydrocarbons linked at each end to glycerol.
B. archaeal lipids are twice the length of phospholipids and sphingolipids, and can span the full width of the plasma membrane.
C. In archaeal lipids, at each end of the extended molecule is a polar head consisting of glycerol linked to either phosphate or sugar residues.
D. The glycerol moiety of the archaeal lipids is same as the stereoisomer as that in the lipids of bacteria and eukaryotes.
Which of the following statement is incorrect?
TLS Online TPP Program

#Question id: 10321

#Unit 1. Structure and Function of Biomolecules

The human blood groups (O, A, B) are determined in part by the oligosaccharide head groups of these glycosphingolipids. Which of the following is correct?
TLS Online TPP Program

#Question id: 10473

#Unit 1. Structure and Function of Biomolecules

Cleavage of beta-carotene by BCMO1 yields two molecules of :
TLS Online TPP Program

#Question id: 10474

#Unit 1. Structure and Function of Biomolecules

Lipids differ from other large biological molecules in that they
TLS Online TPP Program

#Question id: 10475

#Unit 1. Structure and Function of Biomolecules

During the formation of a blood plasma protein The aromatic ring of vitamin K undergoes:
TLS Online TPP Program

#Question id: 10476

#Unit 1. Structure and Function of Biomolecules

Following statements are regarding to gangliosides.

A. They are ceramides with attached oligosaccharides that include at least one sialic acid residue.

B. They are ceramides with attached oligosaccharides that include at least one phasphatidic acid residue.

C. Sialic acid gives gangliosides the negative charge at pH 7 that distinguishes them from globosides.

D. Gangliosides are primarily components of cell-surface membranes and constitute a significant fraction (6%) of brain lipids.

Which of the following combination is correct?