Following statements are regarding to gangliosides.

A. They are ceramides with attached oligosaccharides that include at least one sialic acid residue.

B. They are ceramides with attached oligosaccharides that include at least one phasphatidic acid residue.

C. Sialic acid gives gangliosides the negative charge at pH 7 that distinguishes them from globosides.

D. Gangliosides are primarily components of cell-surface membranes and constitute a significant fraction (6%) of brain lipids.

Which of the following combination is correct?

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#Question id: 31262

#Unit 4. Cell Communication and Cell Signaling

Which of the following is characteristic of a benign tumor?

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#Question id: 21141

#Unit 12. Applied Biology

A vector contains the nitR gene under the control of the nitA promoter in a separate operon, the expression of vector is used, upon the addition of the inducer. The inducer–NitR protein complex activates the transcription of both the target gene(s) and nitR and increased level of NitR results in a very high level of production of the target protein(s). Which type of inducer using by nitR?

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#Question id: 4325

#Unit 3. Fundamental Processes

Cell differentiation always involves

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#Question id: 28583

#Unit 2. Cellular Organization

Some given R factor which are responsible for beginning of the cell cycle in mammalian cells? 

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#Question id: 10441

#Unit 6. System Physiology – Plant

Cryptochrome has photolyase activity, this suggest that;