Which of the following is characteristically produced by the Th2 CD4 cells which provide help for antibody production, but not by Th1 cells?

#Question id: 24660

#Unit 2. Cellular Organization

#Question id: 10437

#Unit 6. System Physiology – Plant

Phytochrome-mediated control of photomorphogenesis is linked to many other gene functions. The following statements are made on the mechanism of phytochrome action:

a) COP1, negative regulator of photomorphogenesis, is a component of the E3 ubiquitin ligase complex that targets photomorphogenesis-promoting proteins for degradation such as phyA

b) Light-dependent export of COP1 to the cytoplasm is a slow process, requires long exposure to light

c) The absence of COP1 in the cytosol permits the accumulation of transcriptional activators necessary for photomorphogenic development

d) The COP1–SPA1-E3 ligase complex is also responsible for the ubiquitination and proteasomal degradation of photomorphogenesis-promoting proteins, such as HY5

Which one of the following combinations is correct?

#Question id: 10778

#Unit 6. System Physiology – Plant

Essential oils are the mixture of volatile,

#Question id: 19087

#Unit 6. System Physiology – Plant

#Question id: 5929

#General Aptitude

January 1 , 2007 was Monday . What day of the week lies on January 1 , 2008 ?