The two strands of the DNA are complementary to each other such that at the end of the DNA one strand will be 3' paired with a 5' end. The two strands of the DNA are held together with hydrogen bonds. In DNA, A binds with t and G binds with c . helicase unwinds the DNA for replication to begin. An RNA primer is created by enzyme which then supplies the (3 or 5)' hydroxyl group used by to start adding DNA nucleotides. The DNA strand is made from (3 or 5)' to (3 or 5)'. The (leading or lagging) strand is made in short segments called okazaki fragments. The (leading or lagging) strand is made in one continuous piece. After replication, the RNA primers are removed by enzyme and replaced with DNA nucleotides. The enzyme seals the nicks in the sugar-phosphate backbone after the RNA primers are removed. On linear chromosomes the enzyme extends the ends by creating a repeating sequence of nucleotides which helps prevent loss of genetic material with each replication.
Added by Charles R.
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The process of DNA replication involves several key enzymes and molecules. One important element is the TATA box, which serves as a promoter for RNA polymerase. Another crucial component is telomerase, which helps to maintain the length of telomeres. Telomeres are repetitive sequences of DNA at the ends of chromosomes. During replication, the DNA strands separate at the replication fork, and a RNA primer is synthesized to provide a starting point for DNA synthesis. The leading strand is synthesized continuously in the 5' to 3' direction, while the lagging strand is synthesized in short fragments called Okazaki fragments. These fragments are later joined together by DNA ligase. DNA polymerase is the enzyme responsible for adding nucleotides to the growing DNA strand. It can only add nucleotides in the 5' to 3' direction, so the DNA strands are antiparallel. The process of DNA replication is semiconservative, meaning that each new DNA molecule consists of one original strand and one newly synthesized strand. Other enzymes involved in replication include helicase, which unwinds the DNA double helix, and topoisomerase, which relieves the tension caused by unwinding. SSBs (single-stranded binding proteins) help to stabilize the single-stranded DNA during replication. Exons are the coding regions of DNA that are transcribed into RNA. The RNA primer is eventually removed and replaced with DNA by the enzyme primase. Overall, DNA replication is a complex and highly regulated process that ensures the accurate duplication of genetic information.
Sri K.
Complementary strands of DNA run from the 5' to the 3' ends, in opposite directions. This is best described as: semi-conservative complementary base pairings antiparallel codons. Which enzyme works to break hydrogen bonds between nitrogenous bases? helicase DNA polymerase primase ligase Where can you find Okazaki fragments? On the lagging strand of a DNA replication fork. On the lagging strand of any RNA molecule. On the leading strand of a DNA molecule during mitosis. On the leading strand of DNA, just before a methionine. Where in the eukaryotic cell does DNA replication occur? mitochondrion nucleoid region nucleus cytoplasm Which is true of the leading strand of replicating DNA? It is built in the opposite direction of the replication fork, in a series of short sequences. It is built in the opposite direction of the replication fork, in one continuous sequence. It is built in the same direction of the replication fork, in one continuous sequence. It is built in the same direction of the replication fork, in a series of short sequences.
Ripujeet P.
One strand of DNA is made out of three components- they are: The difference between a nucleoside and a nucleotide is In a nucleoside the is connected to a nitrogen base through a glycosidic bond. In a DNA dinucleotide two are connected to one another through a phosphodiester bond. The difference between DNA and RNA are the sugar and the nitrogen bases Hydrolysis of a nucleotide produces its three components: Thymine and adenine can form hydrogen bonds. There are this many hydrogen bonds between adenine and its complementary nitrogen base is, Where does synthesis of RNA take place? DNA is made in of the cell What is the name for synthesis of protein? The nitrogen base that does not have oxygen is Transcription is Which feature distinguishes the pentoses from DNA and RNA? Which type of RNA carries an amino acid during protein synthesis? A nitrogen base + a carbohydrate + a phosphate unit makes a During translation are attached to the 3'end of RNA unit to make peptide bonds. The sequence of one strand of double stranded DNA is 5'-AGTCG-3'. The sequence of the complementary strand is (Convention is from 5' end to 3' end)- must flip the matching base pair sequence. Translation is
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