The Nature of Life
The Science of Biology
What Is Science?
Tools and Procedures
Ms. RRRUIZ SAID THAT.....
100
The statement “the worm is 2 cm long” is a(an) HINT!! DATA
What is: quantitative observation.
100
The term spontaneous generation means that
What is: living things can arise from nonliving matter.
100
To be useful in science, a hypothesis must be
What is: testable.
100
An instrument that produces images by focusing light rays
What is: light microscope.
100
It is evidence; information gathered from observations
What is DATA
200
is a proposed scientific explanation for a set of observations
What is: hypothesis
200
The process in which two cells from different parents unite to produce the first cell of a new organism
What is: sexual reproduction.
200
a well-tested explanation that unifies a broad range of observations.
What is: A scientific theory
200
The cell is able to reproduce so that a group of cells, it can be used to test cell responses under controlled conditions
What i: a cell culture
200
use of one or more of the senses—sight, hearing, touch, smell, and sometimes taste—to gather information
What is: observation
300
is an organized way of using evidence to learn about the natural world. Also refers to the body of knowledge that scientists have built up after years of using this process.
What is: science
300
The process by which organisms keep their internal conditions relatively stable
What is: homeostasis.
300
Biologists often use a technique known to separate the different cell parts. First, the cells are broken into pieces in a special blender. Then, the broken cell bits are added to a liquid and placed in a tube.
What is: cell fractionation
300
organized way of using evidence to learn about the natural world; also, the body of knowledge that scientists have built up after years of using this process
What is: science
400
is an ongoing process—a process that involves asking questions, observing, making inferences, and testing hypotheses.
What is: scientific method
400
is a decimal system of measurement whose units are based on certain physical standards and are scaled on multiples of 10. A revised
What is: The metric system
400
Whenever possible, a hypothesis should be tested by an experiment in which only one variable is changed at a time. All other variables should be kept unchanged, or controlled. This type of experiment is called _________
What is: a controlled experiment.
400
To study even smaller objects, scientists use beams of electrons, rather than light, to produce images. It can produce images almost 1000 times more detailed than light microscopes can.
What is: electron microscopes
400
possible explanation for a set of observations or possible answer to a scientific question
What is: hypothesis
500
There are two main categories of data. Some are expressed as numbers, obtained by counting or measuring. Others are descriptive and involve characteristics that can't usually be counted.
What is: Quantitative data & Qualitative data
500
The word biology means the study of life. (The Greek word bios means ________,” and -logy means _______
What is: “life" “study of.”
500
The variable that is deliberately changed is called ______________ _____________ The variable that is observed and that changes in response __________ _________
What is: the manipulated variable & responding variable.
500
scan a narrow beam of electrons back and forth across the surface of a specimen. It produces realistic, and often dramatic, three-dimensional images of the surfaces of objects. Because require a vacuum to operate, samples work must be preserved and dehydrated before they are studied. This means that living cells cannot be observed.
What is: Scanning electron microscopes (SEMs)
500
logical interpretation based on prior knowledge and experience
What is: inference
M
e
n
u