A well-tested explanation that unifies a broad range of observations is a ?
What is theory
100
In the Metric System, the basic unit of length is
What is meter
100
Which of the following in Redi's experiment on spontaneous generation is NOT a controlled variable?
A. gauze covering that keeps flies away from the meat
B. types of jars used
C. Types of meat used
D. temperature at which the jars were stored.
What is A - gauze covering that keeps flies away from the meat
100
Which scientist finally settled the argument over whether or not life could arise from nonliving matter?
Who is Louis Pasteur
100
Microscopes produce images by focusing light rays or beams of ______
What are electrons
200
The study of the living world
What is Biology
200
Group of cells that develops from a single original cell
What is a cell culture
200
A controlled experiment allows the scientist to isolate and test ...
A. several variables
B. a single variable
C. a conclusion
D. a mass of information
What is B - a single variable
200
What kind of microscope is generally used in high school settings?
What is a Compound-Light Microscope
200
Combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes is ______
What is Metabolism
300
Information gathered from observing a plant grow 4 cm over a two week period results in ______.
What is data
300
The variable that is deliberately changed
What is manipulated variable
300
Which of the following is not a characteristic of all living things?
A. ability to move
B. response to the environment
C. growth and development
D. ability to reproduce
What is A - ability to move
300
To obtain identical copies of a single cell, scientists make a ________.
What is cell culture
300
New organism has a single parent. A single-celled organism can divide in half to form two new organisms OR a portion of an organism splits off to form a new organism.
What is Asexual Reproduction
400
When enough experimental data supports a hypothesis, the hypothesis becomes a _____
What is theory
400
Life could arise from nonliving matter
What is spontaneous generation
400
To observe a small, living organism, a scientist might use a ...
A. TEM
B. electron microscope
C. electronic balance
D. compound light microscope
What is D - compound light microscope
400
Logical interpretation based on prior knowledge
What is an inference
400
Cells from two different parents unite to produce the first cell of a new organism
What is Sexual Reproduction
500
The process by which organisms keep their internal conditions fairly stable
What is homeostasis
500
The vast majority of multicellular organisms reproduce ________
What is sexually
500
In cell fractionation, the first step is to place the cells into a ______.
What is blender
500
Part of Earth that contains all ecosystems
What is the biosphere
500
Levels of organization are .....
there are 8
1- Molecules
2 - Cells
3 - Groups of cells
4 - Organism
5 - Population
6 - Community
7 - Ecosystem
8 - Biosphere