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TLS Online TPP Program

#Question id: 1493

In what way is tumor progression like biological evolution?

#Unit 4. Cell Communication and Cell Signaling

  1. Survival of cancer victims is like survival of the fittest.

  2. Cancer cells that proliferate fastest become the most abundant in the tumor.

  3. Tumor progression requires both initiation and promotion.

  4. Cells of benign tumors cannot disperse to distant tissues.

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TLS Online TPP Program

#Question id: 10320

#Unit 1. Molecules and their Interaction Relevant to Biology

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: 4810

#Unit 8. Inheritance Biology

In a haploid organism, the C and D loci are 8 m.u. apart. From a cross C d X c D, which of the following proportion following progeny classes: (a) C D; (b) c d; (c) C d
TLS Online TPP Program

#Question id: 23669

#Unit 13. Methods in Biology

The Ti plasmid is derived from ________.
TLS Online TPP Program

#Question id: 11051

#Unit 10. Ecological Principles

Disadvantages of living in groups include
TLS Online TPP Program

#Question id: 10304

#Unit 6. System Physiology – Plant

Pyruvate is coverted into the Acetyl-CoA, Acetyl-CoA contain the acetyl group which are comes from the pyruvate and Coenzyme A (CoA) that contain other groups such as;

a) A reactive thiol (—SH) group that is critical to the role of CoA as an acyl carrier in a number of metabolic reactions

b) contain pantothenic acid,  A hydroxyl group of pantothenic acid is joined to a modified ADP moiety by a phosphate ester bond

c) pantothenic acid carboxyl group is attached to β-mercaptoethylamine in amide linkage

d) Hydroxyl group at the 3’ position of the ADP moiety has a phosphoryl group not present in free ADP

which of the following correct observation about Coenzyme A (CoA)?