Book: Biology for a Changing World
Michele Shuster, Janet Vigna, Gunjan Sinha, Matthew Tontonoz
Chapter 1: Process of science:
Scientific method includes:
Write down the definitions found in your book:
Hypothesis: the starting point of your investigation, a proposed explanation based on limited evidence
Question: what you are exploring, it is not in the book, but it literally means question
Experiment: a way to explore your question and test your hypothesis
Experimental group: the people or beings of subjects that you are studying, the group that
experiences the experimental intervention
Control group: a group that does not experience the experimental intervention
Placebo: fake treatment
Placebo effect: effect that we see when members of a control group display a measurable response to a placebo
Independent variable: factor being deliberately changed in the experiment
Dependent variable: measured result of an experiment, seen in both the experimental group and the control group
Sample size: number or subjects in the experiment
Result: measurable by units, what you learned
Evidence based conclusion: your result and seeing how it relates to your hypothesis
Scientific theory: a hypothesis that is supported by many years of rigorous testing and thousands of experiments
Chapter 2: elements of Life
Five functional traits of life, pg 23:
Growth: And increase in the organism's size as the number of cell making up the organism increases.
Reproduction: the process of producing new organisms, offspring are similar but not necessarily identical to their parents in general structure, function, and properties.
Homeostasis: organisms maintain a stable internal environment, even when the external environment changes.
Sense and respond to stimuli: organisms respond to stimuli in many ways, they may move toward a food source r away from a threatening predator.
Obtain and use energy: all living beings require an input of energy to power their activities. organisms obtain energy from food (which they either produce themselves or consume from the environment). Chemical reactions convert that energy into usable forms. The sum total of all these reactions is metabolism.
Review of chemistry, important terms:
Activity: work in groups of three or four, split up the words in the list into groups of four and look for the definitions in the book. Then share the definitions with each other:
Types of bonds:
Chapter 3: cells and how they work
COvered 8/9/2018, 8/10/2018
Types of cells:
Prokaryotic cells have a cell wall, eukaryotic cells do not
What is in the cell? Organelles
Ways of cell communication:
Endosymbiosis: the theory that free-living prokaryotic cells engulfed (ate) other free-living prokaryotic cells billions of years ago, forming eukaryotic organelles such as mitochondria and chloroplasts