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A double-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines This DNA molecule could be composed of?
I don't really understand the point of the question but let's see what we can do. Purines are Adenine and Guanine Pyrimidines are Tyimine and Cytosine Since A pairs with T and G pairs with C, the molecule can be composed of any number of ACTG where A+G=C+T=120 and A=T and G=C Hope that helps.
What type of bond hooks the nucleotides on each of a DNA molecule?
Hydrogen bonds are responsible for binding nucleotides on each strand of a DNA molecule. These bonds form between complementary base pairs: adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C).
What are the complementary base pairs in RNA and how do they contribute to the structure and function of the molecule?
In RNA, the complementary base pairs are adenine (A) with uracil (U), and guanine (G) with cytosine (C). These base pairs contribute to the structure and function of RNA by forming hydrogen bonds that help stabilize the molecule's double-stranded regions. This pairing also allows for accurate replication and transcription of genetic information, essential for protein synthesis and other cellular processes.
What type of bonding is responsible for maintaining the shape of the tRNA molecule?
Hydrogen bonding is responsible for maintaining the shape of the tRNA molecule, particularly between complementary base pairs. These hydrogen bonds help stabilize the secondary and tertiary structure of the tRNA, which is important for its function in protein synthesis.
What is the backbone of DNA made of?
Phosphates and sugars.
Before two strands of a DNA molecule can separate the bonds between the must be broken. a. phosphates c. ribose molecules b. base pairs d. alleles?
L Before two strands of a DNA molecule can separate, the bonds between the a. phosphates ribose molecules b. base pairs alleles Please select the best answer from the choices provided C D C. d. Mark this and return Next must be broken.
What base always base pairs with guanine?
In a DNA molecule cytosine always pairs with guanine, the same is true for an RNA molecule.
Is DNA always six base pairs long?
No, DNA is not always six base pairs long. The length of DNA can vary and is determined by the number of nucleotide base pairs present in the DNA molecule. The human genome, for example, consists of about 3 billion base pairs.
How can one accurately count the number of base pairs in a DNA strand?
To accurately count the number of base pairs in a DNA strand, scientists use a technique called DNA sequencing. This process involves determining the order of the nucleotides in the DNA molecule, which allows for the precise counting of base pairs. Specialized equipment and software are used to analyze the DNA sequence and calculate the total number of base pairs present in the strand.
What are the nitrogen base pairs in the DNA molecule?
A with T and G with C .
In a DNA molecule what base sequence is complementary to the sequence CGAC?
The base sequence complementary to CGAC in a DNA molecule is GCTG. In DNA, cytosine (C) pairs with guanine (G), and adenine (A) pairs with thymine (T), so you would replace each base with its complementary counterpart. Therefore, C pairs with G, G pairs with C, A pairs with T, and C pairs with G.
The number of cytosine in a DNA molecule equals the number of?
The number of guanine. In DNA, cytosine always pairs with guanine through hydrogen bonding. This relationship forms one of the complementary base pairs in the double helix structure of DNA.
How does the process of DNA replication ensure that the number of base pairs in a DNA molecule goes from 3 to 5?
During DNA replication, the enzyme DNA polymerase adds new nucleotides to the 3' end of the growing DNA strand. This ensures that the number of base pairs in a DNA molecule increases from 3 to 5, as the new nucleotides are added in the 5' to 3' direction.
What is the base pairing rule in DNA?
Adenine pairs with thymine Guanine pairs with cytosine.
Explain the components of DNA and explain its functional relationship to RNA and protein?
DNA or Deoxyhydro-Neucleic Acid is composed of base pairs, nitrogen and phosphates. The nitrogen and phosphates form the backbone of the DNA structure and take the shape of a double helix with the base pairs on the inside and the backbone on the outside. Thus, a molecule of DNA is actually two separate chains interwoven. The base pairs contain the information and most of the time are protected on the inside of the helix. There are four base pairs, adenine, guanine, cytosine, and thymine (represented by the letters A, T, C, and G) A bonds with T, C bonds with G via hydrogen bonding. A cannot bond to either C or G. This is a major function of the structure of DNA in protecting the information it contains. Should a base pair be incorrectly placed, the molecule will not fold up correctly, and an enzyme will likely find the problem and insert the correct base pair. This base pair bonding makes duplicating the molecule quite easy. The DNA helix unwinds, leaving two separate strands. The base pair sequences on these two strands are complementary to each other. Where there is a C on the first chain, there will be a G on the other. So to copy the molecule, complementary base pairs can be inserted onto the open chain and a back bone bonded to the new base pairs and the resultant will be two identical helices of DNA. A similar mechanism is employed in DNAs transcription To RNA. To be read, the DNA molecule unwinds, leaving two complementary chains. The chain that contains the information starts with a certain sequence which labels it as the one containing useful information. RNA base pairs are inserted onto the DNA chain in the same manner as DNA base pairs would be to copy the molecule with a few exceptions. There is no RNA base pair for thymine, instead the base pair Uracil is used. Uracil is complementary to Adenine. The backbone is also subtly different, though its immaterial to the transcription process. Once completed, this molecule of messenger RNA is complementary to the molecule of DNA, whose information it now encodes. The messenger RNA is what the protein is constructed off of. Transcription enzymes are used for such purpose and have a triplet of base pairs on one end and a amino acid on the other. The triplet of base pairs lines up with a triplet on the messenger RNA and one by one a chain of amino acids is put together. once the transcription enzymes get to the end of the messenger RNA molecule, the protein folds up.
If there are 500 As on a DNA molecule how many T's would there be?
500 - Thymine always pairs with Adenine. Guanine always pairs with Cytosine
Assume that a section of double-stranded DNA contains 100 base pairs If 40 of the pairs contain base c how many pairs would contain base a?
If there are 40 pairs containing base C, the remaining pairs must contain the complementary base, G. Since each base pair must contain one A and one T (complementary to each other), the number of pairs containing base A would be the same as the number containing base T. Therefore, there would be 60 pairs containing base A.
