Why does telomerase have to have a built-in template for dna synthesis? see section 15.4 (page) . view available hint(s) a) telomerase is involved in adding dna to the end of the leading strand. b) all of lagging strand synthesis requires genetic information that is not present in the parent dna molecule. c) telomerase is involved in adding dna to the end of the lagging strand. d) all of leading strand synthesis requires genetic information that is not present in the parent dna molecule.

Telomerase is involved in adding DNA to the end of the lagging strand.

Explanation:

Telomerase is the enzyme of DNA replication that serves to lengthen the telomeric DNA by the addition of repetitive nucleotides to the linear ends of eukaryotic DNA. Since DNA replication is discontinuous in lagging strand and DNA polymerase requires primer and template for DNA synthesis, the ends of lagging DNA strands are not replicated by DNA polymerase.

Telomeres contain short, non-coding repeats at the end of chromosomes. These repeats are rich in T and G nucleotides in humans. Telomers also have short internal RNA and protein components (telomerase). Telomerase serves to add more T and G residues to TG repeats by using the internal RNA as a primer. Repositioning of internal template RNA allows the addition of more T and G residues by telomerase enzyme which in turn would facilitate the completion of DNA replication on lagging strand by DNA polymerase.  

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: