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TLS Online TPP Program

#Question id: 28291

cortical granules form an osmotic gradient which causing water to enter and swell the space between the vitelline envelope and the cell membrane. these cortical granules is released by____

#Unit 5. Developmental Biology
  1. cortical granule serine protease
  2.  Trypsin like protease
  3. ovoperoxidase
  4.  Mucopolysaccharides
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TLS Online TPP Program

#Question id: 11445

#Unit 7. System Physiology – Animal

When the mammalian brain compares the actual temperature of the body to the preferred temperature of the body, which general component is being used?
TLS Online TPP Program

#Question id: 23212

#Unit 13. Methods in Biology

Below are given few examples of microscopy.
1. Scanning electron microscope
2. Transmission electron microscope
3. Cryoelectron microscope
4. Phase-contrast microscope
Out of the following which microscope can be used in unstained live cell imaging?
TLS Online TPP Program

#Question id: 5137

#Unit 5. Developmental Biology

Match the correct animal and their mechanism of germplasm specification.

Animal

Specification of germ cells

a. Drosophila

i. germplasm is characterized by polar granules and PIE-1 protein, and segregates into P4 during cleavage 

b. Xenopus                                                

ii. germplasm localized in vegetal region of egg

c. mammals

iii. germplasm specified by oskar at posterior end of egg

d. c. elegans

iv. Have no germplasm

TLS Online TPP Program

#Question id: 4782

#Unit 8. Inheritance Biology

True breeding agouti mice with genotype AABB were cross to true breeding albino mice with genotype aabb. All F1 offspring having agouti phenotype were allowed to intercross to produce F2 progeny as following number –

                                 A- B -     180 agouti,

                                 aa B-        60 black

                                 --  bb        80 albino

A Male Mice with Aabb genotype was cross with female mice with AaBB genotype. What is probability of Black phenotype among their offspring?
TLS Online TPP Program

#Question id: 18937

#Unit 13. Methods in Biology

Cloning techniques can be used not only to overproduce proteins but to produce protein products altered, subtly or dramatically, from their native forms. Specific amino acids may be replaced individually by