Which of the following types of non-covalent bonds or interactions is responsible for forming the α helix and β sheet secondary structural motifs of a protein:

#Question id: 10791

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

Following are certain statements regarding furanocoumarins;

 a) furanocoumarins have an attached furan ring

 b) These compounds are toxic until they are activated by sunlight in the ultraviolet A (UV-A) region (320–400 nm)  

 c) Light activated furanocoumarins can insert themselves into the double helix of DNA and bind to the pyrimidine bases, thus blocking transcription and repair and leading eventually to cell death   

 d) Phototoxic furanocoumarins are especially abundant in members of the Umbelliferae family, including celery, parsnip, and parsley.

 Which of the following combination from the above statements is correct?

#Question id: 571

#SCPH01 Biochemistry

The steady state assumption, as applied to enzyme kinetics, implies:

#Question id: 12940

#SCPH06 I Botany

#Question id: 3518

#SCPH06 I Botany

Assume that the trihybrid cross AA BB rr X aa bb RR is made in a plant species in which A and B are dominant but there is incomplete dominance between R and r. Consider the F2 progeny from this cross, and assume independent assortment. The phenotypes appear in this F2 progeny?

#Question id: 1778

#SCPH01 Biochemistry

Which is not a function of IgG?