Answer:
A. keeping the strands separated during replication
Explanation:
Prior to the process of DNA replication, the double-stranded DNA must first be separated into single strands by an enzyme called DNA helicase. This is done so that each DNA strand can serve as template for the synthesis of another.
After the unwinding and separation, the single strands still need to be kept apart during the synthesis of new nucleotides by DNA polymerase. This role of keeping the strands separated during replication is carried out by SINGLE STRAND BINDING PROTEINS.
Answer:
Guanine always pairs with Cytosine. :)
Answer:
I think these will be the fat soluble vitamins .....the A,D,E,K
Explanation:
The liver stores vitamin A, D, E, K and B12. The first four of these are all fat soluble. This means that the bile secreted during digestion is essential for absorbing them so that the body can use them. If bile production is compromised by liver damage, the proper absorption of these vitamins may be affected.
Leukemia can be treated using human stem cells to attack and destroy cancer cells.
DNA and RNA are the nucleic acids made of large number of repeating sub-units called nucleotides. Each nucleotide consists of a sugar, a phosphate and a nitrogenous base. There are four types of nitrogenous bases such as adenine (A), guanine (G), cytosine (C) and thymine (T) in DNA. Whereas, in RNA, base thymine is absent and it is replaced by uracil (U). Each base makes one nucleotide with sugar and phosphate.
While scanning the nucleotide one see a u nitrogen base, it means this nucleotide is a part of RNA because nitrogenous base uracil (u) is only present in RNA.