Class Notes (834,630)
Canada (508,661)
York University (35,156)
Natural Science (2,813)
NATS 1675 (237)

NATS 1675 Human Development - Lecture 1

2 Pages
Unlock Document

Natural Science
NATS 1675
Robert Crippen

January 7 , 2013 NATS 1675 – Human Development – Lecture 1 Chapter 1 – General Introduction useful to read Chapter 2 – Chemistry skim through Chapter 3 – Cells Chapter 22 – Evolution Chapter 18 (pp. 419-437) – up to changes in chromosomal number Cells: - microscopic structures that can be described as self-reproducing bags of chemicals - box shaped, surrounded by a cell membrane, contains thick liquid substance, nucleus - cells are the fundamental structural units or building blocks of all ORGANISMs - an ORGANISM is defined as any living thing - cells are composed of PROTOPLASM contained in a membrane (protos = first; plasma = something formed or molded) - PROTOPLASM is the essential material of all cells in living organisms. Life depends on, and arises out of, the continuous chemical activity that occurs in protoplasm. It is also a complex COLLOIDAL SYSTEM. - A COLLOIDAL SYSTEM is a permanent suspension of finely divided particles including large molecules of carbohydrates, lipids (fats), proteins and nucleic acids (RNA & DNA). - KINGDOMS; o MONERA – bacteria & blue-green algae  Organisms are exceedingly small  Have been around a lot longer  They have no organelles  Bacteria have no true nucleus, but they do have DNA  Blue-green algae do have chlorophyll (green pigment involved in photosynthesis)  These organisms have cell walls (like plants) o PROTISTS – single celled organisms previously referred to as protozoans  Many have chlorophyll  Do not have a cell wall  Most of the have the ability to move  Formed eukaryotic cells  True nucleus  Organelles o FUNGI – fungus
More Less

Related notes for NATS 1675

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.