In mevalonic acid pathway, three molecules of acetyl-CoA are joined together stepwise to form mevalonic acid, which intermediate steps it will perform to yield isopentenyl diphosphate (IPP2)?

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#Question id: 6974

#SCPH01 Biochemistry

Where are the stem cells that renew the epithelium of the gut found?

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#Question id: 11536

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

IAA has been found to be conjugated to both high- and low-molecular-weight compounds such as,

a) Low-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

b) High-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

c) High-molecular-weight conjugated auxins include esters of IAA with glucose or myo-inositol and amide conjugates such as IAA-N-aspartate

d) Low-molecular-weight IAA conjugates include IAAglucan and IAA-glycoproteins found in cereal seeds

Which of the following is the correct prediction about low-and high-molecular weight ?

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#Question id: 769

#SCPH28 | Zoology

MicroRNAs are developed from:

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#Question id: 15637

#SCPH28 | Zoology

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.

     

Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.

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#Question id: 324

#SCPH06 I Botany

Why are hydrocarbons insoluble in water?