DNA & Natural Polymers (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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What are polymers?
What are polymers?
Large molecules made of many repeating units called monomers
DNA stands for?
DNA stands for?
Deoxyribonucleic Acid
DNA's role in living things
DNA's role in living things
Tells living things how to grow and develop
How many polymer chains in DNA?
How many polymer chains in DNA?
Two
What monomers build DNA?
What monomers build DNA?
Nucleotides (four types)
What is DNA's structure called?
What is DNA's structure called?
Double helix
Discovery of DNA double helix (who & when)
Discovery of DNA double helix (who & when)
Rosalind Franklin in 1953
What are the four bases in DNA?
What are the four bases in DNA?
Adenine (A), Thymine (T), Cytosine (C), Guanine (G)
DNA base pairing rules
DNA base pairing rules
Adenine pairs with thymine; cytosine pairs with guanine
What does the genetic code contain?
What does the genetic code contain?
Instructions for cells to build proteins
Starch: composition & function
Starch: composition & function
Polymer of glucose; stores energy in plants
Cellulose: composition & function
Cellulose: composition & function
Polymer of glucose; forms plant cell walls & provides support