Class Notes (811,179)
Canada (494,542)
Biology (6,697)
Biology 1001A (1,723)
Dr.Mike (47)

Tutorial 2 Homework.docx

2 Pages
Unlock Document

Western University
Biology 1001A

Tutorial 2 Homework Lecture 6:  Carbohydrates, lipids, proteins and nucleic acids are the four main types of biological macromolecules  The structure of carbohydrates and lipids is repetitive and so are not likely to carry information  The structure of proteins and nucleic acids are built of various combinations of amino acids and nucleotides making them likely for carrying information  DNA contains four different nucleotides. (Adenine-Guanine, Thymine-Cytosine)  Each nucleotide consists of five carbon sugar deoxyribose, a phosphate group and one of the four nitrogenous bases  Adenine and Guanine are purines and Thymine and Cytosine are pyrimidine  The double helix model of two sugar-phosphate backbones are separated from each other by a regular distance  Watson and Crick proposed semi conservative replication the process of DNA replication in which the two parental strands separate and each serves as a template for the synthesis of new progeny double stranded DNA molecules  DNA polymerase can add a nucleotide only to the 3’ end of an existing nucleotide chain  DNA polymerase are said to assemble nucleotide chains in the 5’ – 3’ direction  The two strands of DNA molecule unwind for replication to occur  DNA polymerase can add nucleotides only to an existing chain  The overall direction of new synthesis is in the 5’ – 3’ direction, which is a direction antiparallel to that of the template strand  Nucleotides enter into a newly synthesized chain according to the A-T and G-C base pairing rules  Replisomes, replicate one strand continuously and one discontinuously  Replication bubble is fo
More Less

Related notes for Biology 1001A

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.