In humans, the telomerase of catalytic subunit is known as hTERT (human telomerase reverse transcriptase), which analysis and synthesizes molecule of DNA which is complementary to 6 nucleotides which present in the telomerase-RNA associated with a molecule (The encoding gene is hTR sometimes also known as TERC), Where the nucleotides attaching to the G-rich 3’ and overhanging of preexisting end to the telomeric DNA. Therefore, the molecule hTR is the gene that encodes and recovers the sequence of the telomere, and therefore allows of telomeres elongation.
5. How does the telomerase-associated hTR RNA molecule facilitate the maintenance of telomeric DNA by the...
1. Explain the antiparallel DNA structure. (5 points) 2. How does a DNA molecule code for a protein. Describe the process completely. (10 points) 3. How does DNA replication ensure accuracy. (5 points)
what does the enzyme Helicase do in BOTH RNA and DNA? and what are the differences between the two?
10. With regard to transcription, the enzyme begins of a DNA transcribing RNA after it attaches to the molecule. With regard to translation, the begins translating a polypeptide after it attaches to the __ of an mRNA molecule. Start and stop codons are involved in the process of The start codon is , while the stop codons are 11. and Does the start codon specify an amino acid? If so, which one(s)? Do the stop codons specify an amino acid?...
Pork Which one of the following statements correctly describes telomerase"? Select one: a. Telomerase uses the DNA as a template for synthesizing a new strand. b. Activity of this enzyme is inhibited in many cancerous cells. c. It creates repetitive DNA at the end of the chromosomes, d. This enzyme is active in all dividing cells. In the 1953 article where Watson and Crick describe the structure of DNA, they make reference to a possible copying mechanism for the molecule....
6. Consider the enzyme HindIII cutting a DNA molecule of 40% GC a) What sequence does this enzyme recognise? b) What proportion of this DNA is made up of adenine bases? c) How often would HindIII cut this molecule (in bp)? d) If this DNA molecule was 21,000 bp in length, how many fragments would be produced on average? Could you please explain your reasoning for the answers so that i may actually understand it. so far I know HindIII enzyme recognises AAGCTT, but...
Activation of the telomerase gene is an indicator of cancer progression. How does the telomerase gene assist in granting cancer cells 'immortality'?
Telomerase is__________ and operates in the cell by____________. a. composed of protein; extending the 5’ end of linear chromosomes b. a polysaccharide; stabilizing the cell wall c. an enzyme; providing a primer for the initiation of replication d. composed of protein and RNA; extending the 3’ end of linear chromosomes e. a 3D folded RNA; sealing the gap between Okazaki fragments
Write the sequence of the messenger RNA molecule synthesized from a DNA template strand having the sequence (make sure to indicate 5' and 3' ends): (5')ATCGTACCGTTA(3')
A linear DNA molecule that is 3250 bp long is digested with restriction enzyme A alone, restriction enzyme B alone, or a combination of enzymes A and B to produce the following fragment sizes. Construct a restriction map of the DNA fragment. How many times does enzyme A cut the linear DNA molecule? If you are unable to place both enzymes A and B on the map, show one possible arrangement of enzyme A cognition sites on the DNA molecule.
What does the enzyme reverse transcriptase do? A) Using the amino acid sequence of a protein as a template, it makes an RNA molecule. B) Using RNA as a template, it makes a DNA molecule. C) Using RNA as a template, it makes an RNA molecule. D) Using DNA as a template, it makes an RNA molecule. E) Using DNA as a template, it makes a DNA molecule.