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DNA replication requires
DNA replication requires both DNA polymerase and DNA ligase. DNA polymerase synthesizes the new DNA strand by adding nucleotides, while DNA ligase joins the Okazaki fragments on the lagging strand, sealing nicks in the sugar-phosphate backbone.
Okazaki fragments are Synthesized on
Okazaki fragments are short sequences of DNA nucleotides which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication. This occurs because DNA polymerase can only add nucleotides to the 3' end of a DNA strand, necessitating the synthesis of the lagging strand in short, separated segments.
Which of the following is used in DNA multiplication?
DNA polymerase is the enzyme responsible for synthesizing new DNA strands by adding nucleotides to an existing chain during DNA replication. It plays a crucial role in the multiplication (replication) of DNA by ensuring the correct sequence of nucleotides is added to the growing DNA strand.
t - RNA attaches aminoacid at its
The amino acid attachment site on tRNA is located at the 3' end of the molecule. This is where the amino acid is covalently bonded to the tRNA during protein synthesis, allowing the tRNA to deliver the correct amino acid to the ribosome for incorporation into the growing polypeptide chain.
Multiplication of DNA is called
Replication is the process by which DNA makes a copy of itself during cell division. This is a crucial process to ensure that each new cell has the same genetic material as the parent cell.
the packaging of chromosome at higher levels require a set of proteins that ae collectively referred to as
fact
Genetic information are transferred from nucleus to cytoplasm of cell through
Genetic information is transferred from the nucleus to the cytoplasm through RNA. Specifically, messenger RNA (mRNA) carries the genetic code from DNA in the nucleus to the ribosomes in the cytoplasm, where proteins are synthesized.
The information from RNA to DNA are transferred by which process
Reverse transcription is the process by which information is transferred from RNA back to DNA. This process is carried out by the enzyme reverse transcriptase, which is commonly found in retroviruses like HIV.
Which statement is correct ? A. Degeneracy of code is related to third member of codon B. Single codon, codes for more than one amino acid C. In codon first two bases are more specific D. In codons third base is wobble E. Code is universal
The correct answer is o4: A, C, D, E. Here's why:
- Degeneracy of code is related to the third member of codon (A) because multiple codons can encode the same amino acid, often differing in the third nucleotide.
- In codons, the first two bases are more specific (C) because they play a crucial role in determining the amino acid.
- The third base is considered the wobble position (D) because it can tolerate some variation without changing the amino acid.
- The genetic code is universal (E) as it is nearly the same in all organisms.
DNA molecule has uniform diameter due to ?
The diameter of a DNA molecule is uniform due to specific base pairing between purine and pyrimidine (o3). Purines (adenine and guanine) are larger, and pyrimidines (cytosine and thymine) are smaller. This pairing ensures a consistent diameter because each base pair consists of one purine and one pyrimidine, maintaining the uniform width of the DNA double helix.
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