DNA (continued) by Daniela https://padlet.com/dnunez2021/hvthfo2r89w5 Made with an open mind en-us 2018-02-20 16:32:09 UTC 2025-11-29 18:15:37 UTC hello@padlet.com deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233361954 2018-02-20 16:34:21 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233361954 contains the instructions for our genes dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233362594 2018-02-20 16:35:13 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233362594 Double Helix dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233364848 2018-02-20 16:38:45 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233364848 A DNA molecule consists of 2 long polynucleotide chains composed of 4 types of nucleotide sub units. Adenine (A), Cytosine (C), Guanine (G), and Thymine (T) dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233495794 2018-02-20 20:07:32 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233495794 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233499876
]]> 2018-02-20 20:16:06 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233499876 DNA is made of four types of nucleotides, which are linked covalently into a polynucleotide chain (a DNA strand) with a sugar-phosphate backbone from which the bases (A, C, G, and T) extend. dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233501081 2018-02-20 20:18:54 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233501081 The shapes and chemical structure of the bases allow hydrogen bonds to form efficiently only between A and T and between G and C dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233505702 2018-02-20 20:29:05 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233505702 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233506047 2018-02-20 20:29:52 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233506047 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233508006 2018-02-20 20:34:36 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233508006 How does it work? dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233508423 Amino Acids---> Proteins---> Living cells--->Tissues---> Organs]]> 2018-02-20 20:35:41 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233508423 https://drive.google.com/file/d/1TXacaxSh7EdD3zOhcpQ8uf6CJQSugD09/view dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233572979 2018-02-21 01:33:33 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233572979 https://www.ncbi.nlm.nih.gov/books/NBK26821/ dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573061 2018-02-21 01:34:03 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573061 Because we have different variations of DNA in our genes, we are all different and unique dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573572 2018-02-21 01:37:03 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573572 Deletion dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573698 When nucleotide bases are missing]]> 2018-02-21 01:37:53 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573698 Insertion dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573819 When nucleotide bases are added]]> 2018-02-21 01:38:32 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233573819 Variations in the code can occur during our life fora variety of reasons including exposure toradiation, certain chemicals or by chance. Ageingis a common cause of genetic variation.Throughout our lives, our cells are continuallybeing replaced. dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233574089 2018-02-21 01:39:54 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/233574089 Every cell in our body has a copy of the same DNA. It starts from the original copy and will copy itself multiple times using half the the DNA strand as a blueprint to build a new molecule. dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237622508 2018-03-02 21:39:10 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237622508 What happens? dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237623168 DNA is tightly packed so that every molecule can fit in the nucleus. The DNA strands are separated ]]> 2018-03-02 21:42:21 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237623168 DNA replication requires other enzymes in addition to DNA polymerase, including DNA primase, DNA helicase, DNA ligase, and topoisomerase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237625354 2018-03-02 21:53:24 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237625354 Helicase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237625870 Uses the hydrolysis of ATP to "unzip" or unwind the DNA helix at the replication fork to allow the resulting single strands to be copied.]]> 2018-03-02 21:56:12 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237625870 Primase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237880080 Produces RNA molecules. The enzyme synthesises RNA primers to act as a template for future Okazaki fragments to build on to.]]> 2018-03-05 00:04:14 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237880080 Ligase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237880428 enzyme is in charge of "gluing" together Okazaki fragments, an area that DNA Pol I is unable to synthesize.]]> 2018-03-05 00:07:46 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237880428 Telomerase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884474 Catalyzes the lengthening of telomeres; the enzyme includes a molecule of RNA that serves as a template for new telomere segments.


]]> 2018-03-05 00:38:26 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884474 Nuclease dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884521  enzyme in charge of cutting out, unwanted/defective segments of nucleotides in a DNA sequence.


]]> 2018-03-05 00:38:46 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884521 Topoisomerase dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884683 enzymes in charge of overwinding or underwinding of DNA]]> 2018-03-05 00:39:48 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884683 Polymerase 1 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884953 RNase H removes the RNA primer from the lagging strand and then polymerase 1 fills in the necessary nucleotides between the Okazaki fragments ]]> 2018-03-05 00:41:43 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237884953 DNA strands are separated by the helicase. Single DNA protein attach to the strands in order to replicate, recombine, and repair. dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237885924 2018-03-05 00:47:29 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237885924 After the primer is in place on a single, unwound polynucleotide strand, DNA polymerase wraps itself around that strand, and it attaches new nucleotides to the exposed nitrogenous bases. In this way, the polymerase assembles a new DNA strand on top of the existing one dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887059 2018-03-05 00:54:42 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887059 https://quizlet.com/16241851/enzymes-involved-in-dna-replication-flash-cards/ dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887192 2018-03-05 00:55:33 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887192 https://www.youtube.com/watch?v=dKubyIRiN84 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887221 2018-03-05 00:55:45 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887221 https://www.nature.com/scitable/topicpage/cells-can-replicate-their-dna-precisely-6524830 dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887242 2018-03-05 00:55:55 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887242 https://www.youtube.com/watch?v=8kK2zwjRV0M dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887479 2018-03-05 00:57:38 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887479 The generally accepted method of DNA replication, in which the two strands of the DNA helix separate and free nucleotides pair with the exposed bases on the single chains to form two new DNA molecules, each containing one original and one newly synthesized strand of DNA. dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887591 2018-03-05 00:58:26 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887591 https://www.google.com/search?q=semiconservative%20replication%20definition&rlz=1CALEAI_enUS757US757&oq=semi-%20conservative&aqs=chrome.2.69i57j0l5.4836j0j9&sourceid=chrome&ie=UTF-8&safe=active&ssui=on dnunez2021 https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887626 2018-03-05 00:58:37 UTC https://padlet.com/dnunez2021/hvthfo2r89w5/wish/237887626