OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They generate energy for the cell.
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They restrict what enters and leaves the cell.
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They support and maintain the shape of the cell.
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They provide all instructions for cellular activities.
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Detailed explanation-1: -Nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), carry genetic information which is read in cells to make the RNA and proteins by which living things function. The well-known structure of the DNA double helix allows this information to be copied and passed on to the next generation.
Detailed explanation-2: -The nucleic acid adenosine triphosphate (ATP), made up of an adenine nitrogenous base, a 5-carbon ribose sugar, and three phosphate groups, is involved in generating energy for cellular processes. The bonds between the three phosphate groups are high energy bonds, and supply the cell with energy.
Detailed explanation-3: -Nucleic acids are the most important macromolecules for the continuity of life. They carry the genetic blueprint of a cell and carry instructions for the functioning of the cell. The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Detailed explanation-4: -Nucleic acids such as DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) are composed of a sugar or derivative of a sugar (ribose or 2-deoxyribose), a nucleobase (cytosine, guanine, adenine, thymine, or uracil), and phosphoric acid and found in cell nuclei.
Detailed explanation-5: -Nucleic acid is important in storing, transmitting, and making useful the information necessary for the processes of life. Protein is composed of amino acids that are important for life functions. Lipids are composed of fats, oils, phospholipids, steroids, and waxes.