Answer:
B) Polymerases can only synthesize in the 5' to 3' direction
Explanation:
The leading strand's directionality is 3' to 5', so polymerase has no problem with replicating this one. But the lagging strand has the opposite directionality, so the polymerase must work in the opposite direction of the replication fork.In consequence, the replication process undergoes periodic breaks, and the enzymes have to stop and start again while helicase separates both strands, resulting in the polymerization of okazaki fragments.
Answer:
D
Explanation:
Mitochondria in eukaryotes are believed to have evolved from a symbiotic relationship between protists and prokaryotes. It is proposed that maybe it evolved from protists engulfing prokaryotes as ‘food’. The evidence is due to the fact that mitochondria have their DNA that encodes for about 13 proteins used within the organelle. MtDNA is circular in shape which is very similar to the structure of prokaryotic DNA.
The answer is D. The digestive system provides energy to your muscular system by breaking down foods and using those nutrients to create energy. It is like how when you are starving, you feel weak because you don't have energy. When you eat something you get more energy so you can move
Lysogenic cycle commonly
occur in eukaryotes and is a process where viral DNA or RNA is integrated into
the host cell as a new set of genes called prophage. However, the Viral DNA
becomes the part of the cells genetic materials.
Steps involves during
lysogenic cycle:
1) Cell enters the viral genome
2) Integration of the viral genome into the host cell genome
3) Viral chromosome is copied by the host cell using DNA
polymerase
4) Cell division occurs and transfers of virus chromosomes
to the daughter cell
5) Any trigger in virus will result into detachment of viral
genome from the host cell’s DNA.
