True or False: For a hypothesis to have value it must be "testable"
True
100
What is the smallest unit of life?
Cell
100
True or False: In a lab situation, if unsure of the directions, follow your instincts.
False
100
Tasha is testing the effect of blue colored light on the growth of tomato plants. What is the independent variable?
The blue light
200
______________ is defined as change over time
evolution
200
The work of scientists begins with... (think scientific method)
careful observation
200
Think Characteristics of Life: Birds fly south for the winter.
Living things respond to their environment
200
A theory is...(1) always true (2) the opening statement of an experiment (3) may be revised or replaced (4) is a problem to be solved
(3)may be revised or replaced
200
Going through puberty is an example of...
development
300
Which characteristic of life best fits: your legs and arms get longer and stronger as you get older
Living things grow and develop
300
The variable that is deliberately changed is the...
independent variable
300
Information gathered from observing a plant grow 3 cm over a two-week period is considered...
data.
300
If the amount of water is CHANGED in an experiment it is then considered the _________________ variable.
independent
300
What is the difference between an observation and an inference? (Think of Mrs. Bowling's "me" bag)
observation- what you see
inference- conclusions from what you see
400
What characteristics of life is this an example of (2 options): sweating when you go outside
maintaining homeostasis and responding to stimuli
400
How many variables are tested in a controlled experiment?
One
400
What is the largest level of organization?
biosphere
400
Which is NOT a characteristic of all living things? (1) growth and development (2) ability to move (3) response to stimuli (4) ability to reproduce
(2) ability to move
400
All living things have DNA, which characteristic of life does this reflect.
All living things have organization
500
List all 8 characteristics of life
displays organization, senses and responds, made of cells, reproduces, requires energy, maintains homeostasis, evolves over time, grows and develops
500
Which of the following is NOT a characteristic of science: (1.) to investigate and understand nature (2.)to use data to support a particular point of view (3.)to explain events in nature
2. to use data to support a particular point of view
500
Complete the levels of organization: organism--> population-->community--> _____________--> biosphere
ecosystem
500
Both a fast-moving stream and a dog respond to the environment and grow and develop, but what characteristic of life is the river missing?