Nucleic Acids and Nucleotides
-The nucleic acids DNA and RNA are polymers of nucleotides
-Nucleic acids are large molecules constructed by linking together nucleotides
-Nucleotides consist of two parts: (Dioxy)ribose sugar, phosphate, and the nitrogenous bases
-These parts are attached by covalent bonds. Also, the phosphate from one nucleotide and the sugar from the other are also linked by covalent bonds.
-The nucleic acids DNA and RNA are polymers of nucleotides
-Nucleic acids are large molecules constructed by linking together nucleotides
-Nucleotides consist of two parts: (Dioxy)ribose sugar, phosphate, and the nitrogenous bases
-These parts are attached by covalent bonds. Also, the phosphate from one nucleotide and the sugar from the other are also linked by covalent bonds.
Differences between DNA and RNA
-DNA and RNA differ from the number of strands normally present, the base composition, and the type of pentose 1. The sugar within DNA is deoxyribose and the sugar within RNA is ribose 2. DNA is double-stranded and RNA is single-stranded 3. While DNA uses the nitrogenous base Thymine, RNA uses Uracil |
Structure of DNA
-DNA is a double helix made of two antiparallel strands of nucleotides linked together by hydrogen bonds between complementary base paring
-The two strands run in opposite directions. One flow from 3' to 5' and the other from 5' to 3'
-The bases are held together by hydrogen bonds
-Complementary base paring: Adenine with Thymine and Guanine with Cytosine
-DNA is a double helix made of two antiparallel strands of nucleotides linked together by hydrogen bonds between complementary base paring
-The two strands run in opposite directions. One flow from 3' to 5' and the other from 5' to 3'
-The bases are held together by hydrogen bonds
-Complementary base paring: Adenine with Thymine and Guanine with Cytosine
Crick and Watson's models of DNA structure
Crick and Watson's model was a recollection of other scientist's found evidence, such as Rosaline Franklin's discovery of the double helix, and Chargaff's finding of the equal amounts of thymine and cytosine. This model made it much easier for us to understand the complex structure of DNA.
Crick and Watson's model was a recollection of other scientist's found evidence, such as Rosaline Franklin's discovery of the double helix, and Chargaff's finding of the equal amounts of thymine and cytosine. This model made it much easier for us to understand the complex structure of DNA.
TOK
In the science world, humans have become very competitive with the discovery of knowledge because of personal interests. This has lead to either the hiding of discoveries, or the commitment of plagiarism. Secret research should not be acceptable, and instead science should be a collection of different discoveries from different scientists without having to worry too much about their reputation. All this recollection would lead to a greater basis of scientific knowledge used to discover even more knowledge. If not, we get stuck in the journey of finding knowledge because a big part of it is trapped in the hands of someone who wants to be appreciated
In the science world, humans have become very competitive with the discovery of knowledge because of personal interests. This has lead to either the hiding of discoveries, or the commitment of plagiarism. Secret research should not be acceptable, and instead science should be a collection of different discoveries from different scientists without having to worry too much about their reputation. All this recollection would lead to a greater basis of scientific knowledge used to discover even more knowledge. If not, we get stuck in the journey of finding knowledge because a big part of it is trapped in the hands of someone who wants to be appreciated