Class Notes (838,541)
Canada (510,933)
York University (35,470)
Natural Science (2,813)
NATS 1670 (241)
Motti Anafi (197)
Lecture 11

Lecture 11.docx

3 Pages
Unlock Document

Natural Science
NATS 1670
Motti Anafi

From the DNA to the organism Flow of Information The following series of events defines information flow in the cell: DNA- information storage transcription RNA – information carrier translation Proteins – activity Phenotypes – physical features and functional traits or organism Genomes We have 23 pairs of chromosomes packed into nucleus. Chromosomes contain DNA and stretch 6 feet long. TGCA are the four letter building blocks of DNA. RNA copies the DNA. Genes affects our looks, personality, risks for diseases, etc. Definitions Atom: The smallest chemical unit of matter Molecule: two or more atoms held together by chemical bond [Methane (CH )] 4 DNA (deoxyribonucleic acid) DNA is the molecule responsible for transmission of information from one generation to the next in most forms of life on this planet. Nucleotic structure Sugar: Nucleotides are monomers that consist of a sugar, a phosphate group, and nitrogen-containing base DNA Structure Sugar-phosphate “backbone” Hydrogen bonds between nitrogenous base OH 3’ end Phosphodiester bond 5’ end The two strands are “antiparallel”; one strand runs 5’ to 3’ while the other runs 3’ to 5’ Construction of the DNA molecule • DNA is made up of phosphate & sugars & bonds. • 2 DNA strands intertwine to create a DNA double helix • DNA backbone has
More Less

Related notes for NATS 1670

Log In


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.