terms and people
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| erwin chargaff | Through careful experimentation, Chargaff discovered two rules that helped lead to the discovery of the double helix structure of DNA.
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| dna | 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.
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| structure of dna | double helix or a twisted ladder with a sugar/phosphate backbone
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| nucleotide | the sub unit for DNA
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| double helix | the twisted ladder shape of DNA
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| Rosalind Franklin | British biophysicist and X-ray crystallographer who made critical contributions to the understanding of the fine molecular structures of DNA
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| Watson And Crick | found the double helix strucure
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| t cells | T helper cell (TH cells) assist other white blood cells in immunologic processes,
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| b cells | The principal functions of B cells are to make antibodies against antigens
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| pathogens | a fancy name for a virus
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| antibodies | is a large Y-shape protein produced by B cells that is used by the immune system to identify and neutralize foreign objects such as bacteria and viruses.
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| types of blood | a+,a-,AB+,AB-, B+,B-,O+,O-
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