Chapter 1 Study Guide

4 Pages

Biological Sciences
Course Code
Mark Fitzpatrick

This preview shows page 1. Sign up to view the full 4 pages of the document.
Chapter 1 Studying Life Living organisms consist of cells -unicellular-> a single cell that carries out all the functions of life -multi-cellular-> a number of cells that are specialized for different functions -spontaneous generation-> life arises from non-life -Pasteur-> life must be present in order for life to be generated ->germ theory of disease Cell Theory -all cells come from pre-existing cells -all cells are similar in chemical composition -most of the chemical reactions of life occur within cells -complete sets of genetic information are replicated and passed no during cell division The diversity of life is due to evolution by Natural Selection -living organism are described from common ancestor, relate to one another -species-> group of organism that are morphologically similar -> can breed successfully with one another -natural selection-> trait that increases probability of survival and reproduction is favoured and spread in the population - Adaptation- traits that enhance an organisms chances of survival & reproduction Biological information is contained in a genetic language common to all organisms -genome-> the sum total of all DNA molecules in the cell -gene-> specific segment of DNA -> contain information the cells use to make proteins -mutation-> caused by radiation ->most are deleterious ->beneficial mutation lead to evolution Cells use nutrients to supply energy and to build new structures -capture energy in chemical bond of nutrient -take in nutrient & break them down -2 functions of cells -1) synthesis-> build complex molecules from smaller chemical unit, carbohydrate are turned to fat -2) mechanical work-> move molecules from one location to another Living organism control their internal environment -multi-cellular cells have internal environment that is not cellular ->individual cells are bathed in the extracellular fluids for the purpose of receiving nutrient & excreting wastes
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


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.