Answer:
The slow rate at which diffusion occurs over large distances.
Explanation:
Circulatory system may be defined as one of the most important system of the body that contains arteries and veins. Two main types of circulatory system are open circulatory system and closed circulatory system.
The blood flow all over the body to each cell with the help of the circulatory system. Arteries carry oxygenated blood and veins carry deoxygenated blood in the body. The circulatory system increases the rate of blood flow as diffusion do not allow the transport at long distances.
Thus, the correct answer is option (c).
This is true. The atmosphere gets tighter as you go up.
The type of earth surface is
Cool ocean
Answer: B) iodine
Explanation:
Iodine is a trace element. It is an inorganic mineral. It is essential component in the human diet. It is useful for the production of the thyroid hormone. Iodine salt and seafood are the major sources of iodine. It is also the major component of human blood that is the hemoglobin. In bacteria or plants the iodine is not required. Iodine is not an essential nutrient for plant growth. Iodine can kill the bacteria.
Answer:
1. DNA polymerase
2. DNA primase
3. DNA helicase
Explanation:
DNA replication is the process whereby the genetic material gets duplicated i.e producing an identical copy of a sequence. This process requires the aid of certain enzymes that play specific functions. Some of the important enzymes include:
- DNA polymerase is the enzyme considered to be the most important because it directly adds nucleotides to the strand based on what it reads on the template strand.
- DNA helicase is the enzyme that separates the double stranded DNA molecule into two single strands that forms a structure called REPLICATION FORK.
- DNA primase is the enzyme that adds a short RNA sequence called PRIMERS to the lagging strand of DNA in order for DNA polymerase to start its nucleotide synthesis.