QUESTION 6 Since membranes are selectively permeable, which of these would be able to get through without any help? O a. glucose O b. methionine O c. molecular oxygen (02) O d. Cl- O e. Na+ QUESTION 7 Compared to a triglygeride, a phospholipid has O a. a phosphate group and polar molecule in place of one fatty acid O b. phosphate groups in place of two fatty acids O c. polar molecules in place of three fatty acids O d. a phosphate group in place of a carbon in glycerol Oe. none of the above h

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Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.