Ap Bio: Scientific method and general info.

What is Big Idea 1

Evolution

Describe Big Idea 1

The process of evolution drives the diversity and unity of life

What is Big Idea 2

Energetics

Describe Big Idea 2

Biological systems use energy and molecular building blocks to grow, reproduce, and maintain dynamic homeostasis.

What Is Big Idea 3

Information, Storage, and Transmission.

Describe Big Idea 3

Living systems store, retrieve, transmit, and respond to information essential to life processes.

What is Big Idea 4

Systems interact.

Describe Big Idea 4

Biological systems interact, and theses systems and their interactions exhibit complex properties.

A step-by-step process used by scientists to investigate questions, gather evidence, and draw conclusions based on experiments and observations.

Scientific Method

What is the first step of the scientific method

Observation

What is the second step of the scientific method

Ask a question

What is the 3rd step of the scientific method

Propose a hypothesis

What is the 4th step of the scientific method

Design an experiment

What is the 5th step of the scientific method

Collect data

What is the 6th step of the scientific method

Draw a conclusion.

Prediction that can be tested by recording more observations and experiments.

Hypothesis

What variable is if.

The manipulated

What variable is then

The responding variable

Results can either ______ or _______ the hypothesis

Accept or refute

What do scientists never say.

The hypothesis is correct.

When creating hypothesi what kind of hypothesis do you always start with

Null hypothesis

What is the point of a null hypothesis

Provides a baseline that scientists can test against, helping them determine if their results are significant or due to chance.

What do researchers attempt to do to the null hypothesis.

Disprove it.

IN a null hypothesis their is ____ difference between two groups of data and observations are due to chance

no

H0

Null hypothesis

h1

Alternative hypothesis

What is listed after the null

An alternative hypothesis

An alternative hypothesis is what?

What your trying to prove.

How many trial are need per group in an experiment

3

What are the two groups in an experiment

Control, Expirimental

Receives the experimental treatment (IV) being tested to observe its impact on the outcome (DV)

Experimental group

Used for comparing to the experimental group; help to validate statistical analysis and increase confidence in conclusion drawn from the experimental results

Control

In a control group their are two types. What are they?

Negative, Positive.

Group not exposed to any treatment OR exposed to a treatment known to have no effect

Negative

Group not exposed to the IV but is exposed to a treatment known to have an expected effect

Positive

What is the independent variable

The one factor that is changed between groups.

Factor that is measured and affected by the IV

Dependent

Factor kept consistent for all groups to ensure only the IV affects the outcome; aka controlled vriables

Constants