Practice Questions

TLS Online TPP Program

#Question id: 10777

Why pyrethroids are synthetically and commercially viable and applicable ?

#SCPH05 I Biotechnology

because of their soaplike properties, the presence of both lipid-soluble and watersoluble elements in one molecule
because of their low persistence in the environment and their negligible toxicity to mammals
because it is difficult to extract from plants, where it is covalently bound to cellulose and other polysaccharides of the cell wall
because of their toxicity to humans and their medicinal properties

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TLS Online TPP Program

#Question id: 12733

#SCPH01 Biochemistry

It provides a key marker of potential disease development and reaction to individual treatment.

TLS Online TPP Program

#Question id: 31

#SCPH28 | Zoology

Which of the following is the pair of enantiomers from the following substance?

TLS Online TPP Program

#Question id: 1435

#SCPH28 | Zoology

Direct-acting carcinogens are those that:

TLS Online TPP Program

#Question id: 7751

#I Life Science/ Life Sciences Group – I-V

Ultrastructural studies have led to the characterization of two distinctive cytological

pathways of PCD in plants;

I) Vacuolar-type PCD

II) Hypersensitive response-type (HR-type) PCD

a) cytosol and all its organelles, including the plasma membrane, are completely brokendown

b) The vacuole loses water, resulting in marked cell shrinkage, contraction from the cell wall,

and nuclear DNA degradation

c) PCD occurs in leaves in response to microbial attack

d) cell wall is either partially or completely digested as well, as in endosperm tissue

e) Continued water loss from the cytosol leads to the breakdown of the plasma membrane

and the release of residual cellular contents into the apoplast

Given characterization of PCD pathway match with its type PCD?

TLS Online TPP Program

#Question id: 1774

#SCPH05 I Biotechnology

hinge region provide flexibility to antibody. Which amino acid is responsible for these flexibility?