Unit: Roots of Life Chapter 1, Section 1
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6 CHARACTERISTICS OF ALL LIVING THINGS
(try to create a mnemonic device like a phrase you'll remember that uses the first letter of every characteristic: ex:
Carl Carries Red Umbrellas while eating Red Grapes.
- 1. cellular organization
- 2. contains similar chemicals
- 3. respond to their surroundings
- 4. use energy
- 5. grow and develop
- 6. reproduce
Basic unit of structure and function in an organism
single celled organisms such as bacteria which is the most abundant organism on the earth
organisms composed of many cells.Specialized cells do certain tasks i.e.. muscle/nerve cells
what all cells of living things are composed of
the most abundant chemical found in cells
THE 2 CHEMICAL BUILDING MATERIALS OF CELLS
the genetic materials or the instructions that direct a cell's activities.
WHY CELLS NEED AND USE ENERGY
cells need energy to do what living things do such as grow and repair injured parts
WHAT IS A STIMULUS?
a change in an organism's surrounding that causes the organism to react
examples: light, sound, temperature, ball flying at your face
WHAT IS A RESPONSE
an action or change in behavior based on the stimulus
examples: jump for a fire drill, duck out of the way of the ball coming at you
WHAT IS THE DIFFERENCE BETWEEN GROWTH AND DEVELOPMENT?
growth: the process of becoming larger
development: process of change that occurs during an organism's life to produce a more complex organism
to produce offspring that are similar to parents
the MISTAKEN idea that living things can arise from non living things
example: Garbage (non living) does not create maggots. Flies (living) are attracted to garbage and lay eggs which become maggots.
two tests that are identical in every way EXCEPT for 1 factor called the manipulated variable
the one change in a controlled experiment
designed a controlled experiment that proved flies do not spontaneously arise from decaying meat
French chemist that proved bacteria arise only from existing bacteria
4 BASIC NEEDS OF ALL LIVING THINGS
- 1. food (energy)
- 2. water
- 3. living space
- 4. stable internal conditions
organisms that make their own food
auto: self troph: food
organisms that cannot make their own food
the ability to maintain stable internal conditions. Keeps internal conditions just right for cells to function.
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