What does cytosine pair with?
Cytosine pairs with guanine, and adenine pairs with thymine. These are the base pairing rules that allow DNA replication and protein synthesis to happen.
Which of the following does cytosine pair with quizlet?
Adenine always pairs with thymine. Cytosine always pairs with guanine. These are referred to as the base pairing rules.
What does cytosine pair with during DNA replication?
Replication relies on complementary base pairing, that is the principle explained by Chargaff’s rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).
Which of the following does cytosine pair with guanine thymine adenine a pyrimidine?
Cytosine being a pyrimidine cannot pair with thymine and a pyrimidine. Also, adenine and cytosine do not pair with each other due to Chargaff’s Rule.
Which nitrogenous bases are found in DNA?
There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands. Each strand is composed of nucleotides bonded together covalently between the phosphate group of one and the deoxyribose sugar of the next.
What is the difference between DNA and RNA?
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
What is the biggest difference between DNA and RNA?
The most obvious difference is that DNA is a double-stranded molecule, while RNA is single-stranded. DNA is also much longer than RNA. An entire chromosome is actually just one molecule of DNA. While both DNA and RNA have sugar molecules in their subunits, those sugars are slightly different.
What are the 5 differences between DNA and RNA?
DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. DNA and RNA base pairing is slightly different since DNA uses the bases adenine, thymine, cytosine, and guanine; RNA uses adenine, uracil, cytosine, and guanine. Uracil differs from thymine in that it lacks a methyl group on its ring.
Is RNA in human body?
RNA has been found in a panoply of human body fluids: blood, urine, tears, cerebrospinal fluid, breast milk, amniotic fluid, seminal fluid and others.
What is RNA in the human body?
RNA is the acronym for ribonucleic acid. RNA is a vital molecule found in your cells, and it is necessary for life. Pieces of RNA are used to construct proteins inside of your body so that new cell growth may take place. DNA and RNA are actually thought of as ‘cousins.
Which RNA is most stable?
rRNA and tRNA are stable types of RNA. In prokaryotes and eukaryotes, tRNA and rRNA are encoded in the DNA, then copied into long RNA molecules that are cut to release smaller fragments containing the individual mature RNA species.
What’s the difference between mRNA and RNA?
Messenger RNA (mRNA) is a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene. The mRNA is an RNA version of the gene that leaves the cell nucleus and moves to the cytoplasm where proteins are made.
What process do RNA molecules play a role in?
Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. This process uses transfer RNA (tRNA) molecules to deliver amino acids to the ribosome, where ribosomal RNA (rRNA) then links amino acids together to form coded proteins.
What is the role of DNA and RNA in protein synthesis?
DNA makes RNA makes Protein. The synthesis of proteins occurs in two sequential steps: Transcription and Translation. Transcription occurs in the cell nucleus and uses the base sequence of DNA to produce mRNA. The mRNA carries the message for making a specific protein out to the cytoplasm where translation occurs.
What important role does RNA play in the expression of information found in the DNA?
RNA serves as an intermediate molecule that translates the instructions from DNA into protein. During the initiation of gene expression, the DNA double helix unwinds to produce two separate strands with their amines sticking out from the backbones.