Following are certain statements regarding

morphogen gradients and cell specification.

A. Morphogens are always transcription factors

B. Morphogens can be paracrine factors that are produced in one group of cells and travel to another population of cells

C. When the concentration of a morphogen drops below a certain threshold, cells stop differentiating and never get determined to another fate

D. Morphogen gradients are involved in conditional specification

Which combination of the above statements is true?

TLS Online TPP Program

#Question id: 24660

#Unit 2. Cellular Organization

Which of the following transporters cause antibiotic resistance in pathogenic microbes such as Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans, Neisseria gonorrhoeae, and Plasmodium falciparum?

TLS Online TPP Program

#Question id: 10416

#Unit 6. System Physiology – Plant

Phytochromes  involved  in  red/far‐red  response  are  dimeric  chromoproteins contains N-terminal and C-terminal moiety have domains, which perform various functions such as;

a) Photochromobillin attach with the N-terminal GAF domain, it is an enzyme which causes isomerisation activity in the phytochromobilin

b) PAS-GAF-PHY is a photosensory domain

c) PAS domain perform the lyase activity at C-14 and C-15, which creates a double bond

d) PRD is PAS related domain which involve in import of Phy-B in the nucleus

Which of the following combinations of domain functions is incorrect?

TLS Online TPP Program

#Question id: 19038

#Unit 13. Methods in Biology

In which type of chromatography, the stationary phase is held in a narrow tube and the mobile phase is forced through it under pressure? 

TLS Online TPP Program

#Question id: 11821

#Unit 6. System Physiology – Plant

Immediate precursor of ethylene is___

TLS Online TPP Program

#Question id: 11564

#Unit 7. System Physiology – Animal

Injury localized to the hypothalamus would most likely disrupt ________.