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BIO 4404: Pathophysiology Unit 3
Typology: Lecture notes
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What are the three parts of the central dogma of life? 1. Replication of existing DNA
What is DNA? the chemical building block of the genome
What are chromosomes? long continuous strands of coiled DNA
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1 What are the three parts of the central dogma of life?
(^2) What is DNA?
(^3) What is a nucleotide (nt)? 4 What are telomeres?
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What is a nucleotide (nt)? nitrogenous base (adenine, cytosine, guanine or thymine)
What are histones? DNA is very compact because double strands twist around proteins → "double helix" supercoiled looped structure called chromatin
What are telomeres? segments of repeated nt sequences located at ends of chromosomes to prevent the DNA from unraveling and prevent chromosomes from attaching to each other during replication and cell division processes
What is a gene? segment of DNA nucleotides that carries information for synthesis of a specific protein