Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
What is the goal of Science?
|
to investigate and understand nature, and to use those explanations to make useful predictions.
|
|
How does an observation of an object differ from an inference about it?
|
Observations uses one or more of the senses to gather in formation and record it but an inference is a logical interpretation of the prior knowledge like testing samples.
|
|
How does a hypothesis help scientists understand nature?
|
By increasing their knowledge of the hypothesis that is tested, whether it is supported or refuted.
|
|
Why is it advantageous for scientists to test only one variable at a time in an experiment?
|
Because, if all the variables are changed at once, you can't tell which one is responsible for the observed results.
|
|
Distinguish between a variable and a control.
|
VARIABLE: factors that change, like equipment, material, temperature, light, time.
CONTROL: Keeping these variables the same. |
|
What steps are involved in making a conclusion?
|
1. Use data from experiment
2. Evaluate the hypthesis 3. Draw a conclusion |
|
Describe the impact of Pasteur's work on the community:
|
1)many discoveries of microorganism. 2)saved french wine industry from souring & silkworm disease. 3)showed microorganisms responsible for infectious diseases. 4) Proved living things come from living things
|
|
What must happen for a hypthesis to become a theory?
|
As a hypthesis is experimented by numerous investigations, it becomes a theory when supported by many scientists because of positive results.
|
|
How are unicellular & multicellular organisms alike?
|
All reproduce, grow, obtain & use energy, respond to their environment, evolve over time.
|
|
How are unicellular & multicellular organisms different?
|
Unicellar is one cell only, multicellar is many cells, 100's 1000's even millions or trillions of cells.
|
|
At least how many different cell types does the human body consist of?
|
85
|
|
Give an example of changes that occur during lifecycle of multicellular organisms:
|
Development: butterfly from cacoon, eggst to maggots to flies, etc.
|
|
How can a group of data be more informative than a table of data?
|
Graph of data can make a pattern much easier to recognize, understand and interpret.
|
|
How can a cell culture be useful to biologists?
|
Test cell responses under controlled conditions, study interactions between cells, select specific cells for further study.
|
|
What does science study, what does it NOT study?
|
Studies nature,
Not art, etc. |
|
How does science reach far beyond the scientific world?
|
They contribute information to discussions about 1)health & disease 2) relationship between people & other living things 3)public health & environment.
|
|
Name some ways scientists contribute information regarding public health & environment:
|
1) how to assure that antibiotics will be effective for a long time. 2)How should chemical wasted be disposed of? 3)Info about your genes, how much needs to be private. 4) How communities should produce electricilty.
|
|
Scientiests contribute information to discussions within the community, are the questions that arise answered by scientists alone?
|
No, the society and economy also contribute to such discussions.
|
|
Do scientists make final decisions in our society?
|
No., just recommendations
|
|
How does biology touch your everyday life?
|
1)help appreciate life, pets to dinosaurs. 2)Provide info of food, nutrition you need, 3)provide methods to sustain world food supply. 4)diagnose & treat medical problems 5)identifies environment factors that can threaten you, disposal wastes from human activities, etc.
|
|
More than any other science, how does biology help us?
|
Helps us to understand what affects the quality of our life.
|
|
List 3 possible ways a hypothesis may arise:
|
Prior knowledge
Logical inference Imaginative guesses |
|
What is the difference between theory and hypthesis?
|
Theory is a well tested explanation that unifies a broad range of observaiont and Hyptheses is a possible explanation for a set of observations or an answer (guess) to a scientific question.
|
|
BIOLOGY CHAPTER 1
UNDERSTANDING KEY CONCEPTS |
HI THERE, GOOD LUCK ANDREW
|