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ID: 186517 • Letter: P

Question

Please can you help me all my questions .. thank you Please can you help me all my questions .. thank you ESTION 1 hat type of lipid is the major component of the cell membranes? B sterolds QUESTION 2 Match the following organic molecules with the covalent ink that holds their building blocks together A Giycosidic bond B peptide bond C Phosphodiester bond acids of proteins of nuacleic acids of carbohydranes QUESTION The number of [1] or the anomic number, specities the atom as a partcular element QUESTION 4 Fatty acids that do not contain carbon to carbon double bonds are described as Fatty acids that do contain the carbon to carbon double bonds QUESTIONS Click Save and Submit to save and submit. Cliok Save All Ansicers to save all ansvers READY FOR YO

Explanation / Answer

1.C. Phospholipid

The major component of the cell membrane is phospholipid according to the Fluid Mosaic model of Singer and Nicolson (1972), though small amount of cholesterol is also present in the cell membrane.

2. Amino acids of proteins- Peptide bond

Nucleotides of nucleoacids- Phosphodiester bond

Monosaccharides of carbohydrates- Glycosidic bond

3. It is true that the atomic number specifies a particular element. The atomic no. 1 specifies Hydrogen.

4. Fatty acids which do not contain carbon-carbon double bonds are saturated fatty acids, which contain carbon-carbon double bonds are unsaturated fatty acids.

5.This is mainly due to the Hydrogen bonding which is present between two water molecules. It is due to the hydrogen bonds, ice is less dense than water and so ice floats on water surface in large bodies of water. This means that large bodies of water don't get cold deeper down as fast as they might if ice sank, i.e the layer of frozen water at the top of the pond provides some insulation and prevents the rest of the water getting cold as quickly. This helps wildlife survive in ponds over winter.