the goal of science is to investigate and understand the natural world to explain events in the natural world and to use those explanation to make useful predictions.
what is the study of science?
100
can be considered a hypothesis
What is spontaneous generation?
100
a scienc ethat employs the scientific method to study living things?
What is biology
100
decimal system of measurement based on certain physical standards and scaled on multiples of 10
What is metric system
100
how do scientists test hypotheses?
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
200
it refers to the body knowledge that scientists have built up after years of using this process.
What does the word of science also refer to?
200
it is an experiment that is completley in control
What is a controlled experiment
200
what is the smalles unit of an organism that caqn be considered alive.
What is a cell
200
a technique in which cells are broken into pieces and the different cell parts are separated.
What is cell fractation
200
how does a scienticfic theory develop
a word theory applies to a well tested explanation that unifeis a broad range of observations
300
the process of gathering information about events or processes in a carful orderly way.
What is observation
300
the variable that is deliberately changed is called the manipulated variable
What is a manipulated variable?
300
a set of chemical reactions through which an organism builds up or breaks down materials as it carried out its life process
What is metabolism
300
a microscope that allows light to pass through a specimen and uses two lenses to form an image
What is compound light microscope
300
what are some characteristics of living things?
living things are made up of units called cells.
living things reproduce.
living things are based on a uinversal genetic code.
400
the information gathered from observations
What is data?
400
the variable that is observed and that changes in response to the manipulated variable is called responding variable
What is responding variable
400
a process by which organisms maintain a relatively stable internal enviroment
What is homeostasis
400
a microscope that forms an image by focusing beams of electrons onto a specimen
What is electron microscope
400
how can life be studied at different levels?
some of the levels at which life can be studied include molecules cells, organisms, population of a single kind of organ.
500
is a logical interpretation based on prior knowledge or experience.
What is interference
500
a well tested explanation that unifes a broad range of observations.
What is a theory?
500
a signal to which an organism responds
What is stimulus
500
a group of cells grown in a nutrient solution form a single original cell
What is cell culture
500
what measuremnt system do most scientists use?
most scientists use the metric system when collecting data and performing experiments.