DNA and RNA by Jameshia Williams https://padlet.com/jaiwilliams1738/4amxw4qk99vb This is about DNA and RNA. en-us 2018-01-24 22:45:47 UTC 2018-01-24 23:27:08 UTC hello@padlet.com Full name for DNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470386 Deoxyribo Nucleic Acid]]> 2018-01-24 22:52:12 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470386 4 bases for DNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470729 In DNA, there are four different bases: adenine (A) and guanine (G) are the larger purines. Cytosine (C) and thymine (T) are the smaller pyrimidines.]]> 2018-01-24 22:54:38 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470729 Shape of DNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470938 double helix]]> 2018-01-24 22:56:29 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224470938 Sugar in DNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471050 DNA and RNA is the sugar, with 2-deoxyribose being replaced by the alternativepentose sugar ribose in RNA. The four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T).]]> 2018-01-24 22:57:22 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471050 Base pairing rules for DNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471201
  • A with T: the purine adenine (A) always pairs with. the pyrimidine thymine (T)
  • C with G: the pyrimidine cytosine (C) always pairs with. the purine guanine (G)

    • ]]>     2018-01-24 22:58:37 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471201     Picture of DNA replication jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471594
    ]]>     2018-01-24 23:01:33 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471594     jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471766 2018-01-24 23:03:02 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471766 Picture of Genes, DNA and chromosome jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471937
    ]]>     2018-01-24 23:04:28 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224471937     Full name for RNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472072 Ribonucleic acid ]]> 2018-01-24 23:05:21 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472072 Shape of RNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472265 Even though RNA is single-stranded (unlike DNA, which is made up of two strands), it can still form complementary base pairs. Complementary sections within a single strand of RNA can base-pair with each other, causing the molecule to fold in on itself and form a complex, three-dimensional shape.]]> 2018-01-24 23:06:38 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472265 4 bases for RNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472319 Cytosine (C) and thymine (T) are the smaller pyrimidines. RNA also contains four different bases. Three of these are the same as in DNA: adenine, guanine, and cytosine. RNA contains uracil (U) instead of thymine (T).]]> 2018-01-24 23:06:57 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472319 Sugar in RNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472368 L-ribose - not naturally occuring.
    D-ribose - occurs in nature in RNA.]]>     2018-01-24 23:07:17 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472368     Base pairing rules for RNA jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472401 The base pairing of guanine (G) and cytosine (C) is just the same in DNA and RNA. So in RNA the important base pairs are: adenine (A) pairs with uracil (U); guanine (G) pairs with cytosine (C).]]> 2018-01-24 23:07:33 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224472401 Explanation of DNA replication picture jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224473903 The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA molecule. This is carried out by an enzyme called helicase which breaks the hydrogen bonds holding the complementary bases of DNA together (A with T, C with G).The separation of the two single strands of DNA creates a ‘Y’ shape called a replication ‘fork’. The two separated strands will act as templates for making the new strands of DNA.One of the strands is oriented in the 3’ to 5’ direction (towards the replication fork), this is the leading strand. The other strand is oriented in the 5’ to 3’ direction (away from the replication fork), this is the lagging strand As a result of their different orientations, the two strands are replicated differently

    ]]>     2018-01-24 23:17:30 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224473903     Explanation on what genes, DNA and chromosomes are jaiwilliams1738 https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224474587 Chromosomes are thread like structures. They are made of highly, tightly coiled DNA.
    DNA is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms.
    Gene is a region of DNA that encodes function.
    Now try to understand these two statementsA chromosome consists of a long strand of DNA containing many genes.A human chromosome can have up to 500 million base pairs of DNA with thousands of genes
    ]]>     2018-01-24 23:22:10 UTC https://padlet.com/jaiwilliams1738/4amxw4qk99vb/wish/224474587