Which one of the following statements about ribosomes is true?

#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: 19137

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

#Question id: 3274

#SCPH06 I Botany

The common edible frog of Europe is a hybrid between two species, Rana lessonae and Rana ridibunda. The hybrids were first described in 1758 and have a wide distribution, from France across central Europe to Russia. Both male and female hybrids exist, but when they mate among themselves, they are rarely successful in producing offspring. What can you infer from this information?

#Question id: 2320

#SCPH28 | Zoology

What organelle temporarily stores or transports substances within the cell?

#Question id: 11605

#SCPH06 I Botany

Major uses of gibberellins applied as a spray or dip, are to manage several processes except,