1. Introduction to Biology
Week 1
Welcome!
Ms. Marsico

2. Schedule Review of Syllabus and class expectations
Chapter 1: A View of Life
Virtual Lab 1: Independent and Dependent Variables
Homework for next week

3. Syllabus
Please sign acknowledgment
Paper
Engrade Codes

4. Chapter 1: A View of Life 1.1 The Characteristics of Life
Organisms: all living things

5. Living things are organized
Unicellular: made of one cell
Multicellular: made of more than one cell
Cell: the smallest, most basic unit of life
Levels of Biological Organization: cell- tissues-organs-organ systems- complex organisms

7. Living things acquire materials and energy
Energy: the ability to do work
Metabolism: all the chemical reactions in a cell
Photosynthesis: a process that transforms solar energy into chemical energy
Homeostasis: maintenance of internal conditions within certain boundaries

8. Living things reproduce and develop
Living things respond
To their environment (their behavior)
Living things reproduce and develop
Reproduce: make another organism like itself
Living things have adaptations
Adaptations: modifications that make organisms suited to their way of life

9. Evolution: The Core Concept of Biology
Evolution: process by which a species have changed and diversified since life arose

10. The diversity of life
Taxonomy: discipline of identifying and classifying organisms according to certain rules
Categories of classification: species, genus, family, order, class, phylum, kingdom and domain
Scientific naming: Binomial Name (two part name consisting of the genus and species)
Genus species, i.e. Homo sapiens
Domains: Bacteria, Archaea, and Eukarya
First two are prokaryotes
Kingdoms: Protista, Fungi, Plantae, Amimalia

11. Natural Selection
The process by which evolution occurs, in four steps
Descent with modification, one species can be the ancestor to several species

12. Population: all the members of a species within a particular community
How the Biosphere is Organized
Biosphere: all the air, land, and water at the surface of the Earth where living organisms are found
Population: all the members of a species within a particular community
Community: Populations together
Ecosystems: Communities and the physical environment

13. Biology: The scientific study of life
Science: A Way of Knowing
Biology: The scientific study of life

14. Scientific Method Observation Hypothesis
Inductive reasoning – using creative thinking to combine facts into a cohesive whole
Hypothesis- possible explanation for a natural event

15. Experiments/ Further observations
Experiment- a series of procedures to test a hypothesis
Experimental variable- the deliberately changed variable
Test groups- exposed to the experimental variable
Control group- group that is not experimental variable
Model- representation of an actual object
Data- results of an experiment

16. Scientific theories- accepted explanations for how the world works
Conclusion
The hypothesis is supported or not supported
Scientific theories- accepted explanations for how the world works
Principle/law- theories that are generally accepted by an overwhelming number of scientists

18. How to do a Controlled Study, page 12-13
Example experiment

19. Science and Bioethical Issues
Technology- application of scientific knowledge for a practical purpose
Bioethics- branch of ethics that is concerned with the development and consequences of biological technology
Biodiversity- variation in life on Earth (number of species)
Extinction- death of a species or larger group

20. Review Questions
The region of the Earth’s surface where all organisms are found is called the
biosphere

21. All the chemical reactions that occur in a cell are called
metabolism

22. A modification that helps equip organisms for their way of life is a(n)
adaptation

23. The process of turning solar energy into chemical energy is called
Photosynthesis

24. A group of interbreeding individuals is a
Species

25. Information collected from a scientific experiment is known as
data

26. The smallest living unit is a(n)
Cell

27. Virtual Lab www.mhhe.com/maderessentials2
Dependent and Independent Variables
Read Directions Carefully!
We’ll review together today, but most days you finish on your own

28. Homework Review Part I: The Cell
Skip Chapter 2- use as a reference only
Chapter 3-7
We have no class the 4th or September 5th, therefore we will have a class make up day (the day of the final) on September 12th.