Scientific Method
Scientific Method Cont.
Characteristics of Living Things
Characteristics of Living Things
Miroevelution
100
The work of scientists usually begins with this.
What is careful observations
100
The theory that living organisms could come from nonliving things
What is the theory of spontaneous generation
100
smallest unit of living things
What is a cell
100
Most bacteria reproduce this way
What is asexual reproduction
100
evolution that results from environmental pressure that allows some species to live to reproduce better than others is referred to as
What is natural selection
200
Information gathered from watching your grass seeds germinate and grow over a period of time.
What is data
200
What was the MV and RV in Redi's experiment of spontaneous generation.
MV: Type of cover over jar RV: Number of maggots
200
Which characteristic of life best explains why arctic hares grow white fur in the winter and brown fur in the summer?
What is response to the environment
200
A single fertilized egg divides again and again, each cell eventually differentiates into specific cell types with various functions. What characteristic of life does this best describe?
What is growth and development
200
The father of evolutionary theory is
What is Charles Darwin
300
Based on your observations, you suggest that grass seed watered with fertilizer will germinate faster than grass seed watered with plain water. This is called
What is a hypothesis
300
What made Redi's Spontaneous Generation experiment considered a CONTROLLED experiment.
Controlled group: open jar Experimental group: cloth covered jar, cork covered jar All other variables were kept the same.
300
What characteristic of life is illustrated in a food web?
What is all living things need material and energy
300
Ancient horses used to be the size of a medium sized dog. Now horses are much larger standing, at the withers, approximately 5 feet. What characteristic of life best describes this?
What is evolve over time (as a group)
300
Type of evolution that typically increases genetic variation in a population through immigration is referred to as
gene flow
400
In a controlled experiment it is important for a scientist to isolate and test a single one of these.
What is a variable
400
Charles Darwin's idea about change over time has been well tested by other scientists and is now considered to be this.
What is a theory
400
Most plants and animals exhibit this type of reproduction.
What is sexual
400
All living organisms must consume energy to grow and develop. The chemical reactions that take place to build or to break down materials is known as
What is metabolism
400
Type of evolution that typically decreases the genetic variation due to random events in a population is referred to as
What genetic drift
500
Design an Experiment: Josie wondered if of butter affected the texture of chocolate chip cookies. MV (control and experimental group), RV, 3CV
MV: control regular butter, experimental (oil, generic, name brand butter) RV: texture 3CV: oven, other ingredients, person making them, elevation
500
How does theory compare with a hypothesis?
Theory: well tested over time (many experiments) and unifies a broad range of observations hypothesis: proposed explanation for an observation
500
What characteristic of life best explains why humans sweat when they are hot
What is homeostasis
500
Organisms detect and respond to _______________ from their environment.
stimuli
500
Give an example of a population going through: 1) Bottleneck 2) Founder Effect 3) Natural Selection
1) B: Flood wipes out most of the groundhog population 2) F: New frog species colonizes an island 3) NS: Snake eats the smallest frogs in a population
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