In Eukaryotes, the DNA replication can start at several sites or places in the DNA molecule or DNA strand. The only important factor for DNA replication to start is that it starts at replication fork.
The replication of DNA is semi-conservative in nature because each strand acts as a template for synthesizing a new complementary strand of the double helix.
The new DNA is made with the help of the enzyme DNA polymerase which requires a primer for starting the DNA synthesis.
Replication occurs only at specific regions of DNA known as origin of replication and these are short sequences of nucleotides which are recognized by the enzyme for the replication.
The special enzymes or proteins recognize the specific sites and then binds to them. After binding, the DNA is opened up forming the replication forks which are two Y- shaped structures.
Answer:
If there are no plants in the tank, they will run out of oxygen because there is nothing producing oxygen.
Explanation:
The correct answer is xylem.
<span>Xylem is a type of plants’ transport tissue. The function of the xylem is to transport water and solutes from the roots to the leaves. The xylem transport system is composed of continuous tubes called xylem vessels. Xylem vessels enable transport (after absorption from the soil through root hair cells) up the stem to the leaves. Water evaporation from the leaves (transpiration) is also mainteined by xylem. Xylem vessels consist of dead cells with a thick, strengthened cell wall with a cellulose and hollow lumen. Vessel element is one of the cell types found in xylem and together with tracheids, is involved in the actual transport.</span>
We have clorthing, medicine, we have insulin shots and other medical advancments animals don't have, and that help us to mantain a stability in our organism.<span>
</span>
