Class Notes (904,866)
CA (538,312)
UTSG (45,720)
BIO (2,270)
BIO120H1 (1,175)
Lecture

Includes slides

3 Pages
128 Views

Department
Biology
Course Code
BIO120H1
Professor
Belinda Chang

This preview shows page 1. Sign up to view the full 3 pages of the document.
Lecture 1 Intro to Cells & Nucleic Acids
Tree of Lifeshare similar things (DNA, RNA, proteins)
-Composed of 3 major kingdoms:
Procaryotes
Composed of
unicellular
organisms
oBacteria (Eubacteria)true/normal bacteria
oArchaea (archaebacteria) characteristics of eubacteria &
eucaryotes, grow in diverse places (thermal places, sewage pits, salt
marshes, high acid, low places)
oEucaryotes multicellular (vertebrates, invertebrates,
plants, humans) or single-celled (protists)
2 main types of cells:
1) Procaryotic cells
-No nuclei
-Single-celled (mostly exist as independent individuals, known to form colonies/communities)
-Bacteria & archaea
2) Eucaryotic cells
-Nuclei (nucleic acids are separated by nuclear membrane)
-Multicellular (not always)
-Plants, fungi, animals, humans
Procaryotic cells
-Very simple cell, not many specialized compartments
-Plasma membrane serves as filter to separate inside from
outside & mediate what diffuses in/out
-Nucleiod nucleic acids that are not enclosed by any sort of
membrane
-Cell wallprotects bacteria from outside
-Ribosomessites of protein synthesis & free-floating in cytosol.
Eukaryotic Cell
-Much more complex & divided into many different types
of specialized compartments.
-Larger (though not always)
-Much greater degree of complexity requires structural
elements called cytoskeleton which mediate division of cell
into specialized compartments, mediate shape cell can
have, movements of cell towards things.
-Microtubule help move different organs & proteins
up/down these structures.
-DNAcontained w/in nuclear envelope.
-Ribosomes tend to be organized into structure called
endoplasmic reticulum although some occur in cytosol.
-Energy-producing units are contained in mitochondria
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Lecture 1 Intro to Cells & Nucleic Acids Tree of Life share similar things (DNA, RNA, proteins) - Composed of 3 major kingdoms: Procaryotes o Bacteria (Eubacteria) truenormal bacteria Composed of o Archaea (archaebacteria) characteristics of eubacteria & unicellular eucaryotes, grow in diverse places (thermal places, sewage pits, salt organisms marshes, high acid, low places) o Eucaryotes multicellular (vertebrates, invertebrates, plants, humans) or single-celled (protists) 2 main types of cells: 1) Procaryotic cells - No nuclei - Single-celled (mostly exist as independent individuals, known to form coloniescommunities) - Bacteria & archaea 2) Eucaryotic cells - Nuclei (nucleic acids are separated by nuclear membrane) - Multicellular (not always) - Plants, fungi, animals, humans Procaryotic cells - Very simple cell, not many specialized compartments - Plasma membrane serves as filter to separate inside from outside & mediate what diffuses inout - Nucleiod nucleic acids that are not enclosed by any sort of membrane -
More Less
Unlock Document


Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

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


OR

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.


Submit