Transcript Characteristics of living things

Living or
Nonliving?
Pasteur’s
Experiment
Francesco Redi’s Experiment
1
2
3
What is the theory of
biogenesis?
1.)
States
that living
things come only
from other living
things.
2.) What are 6 common
characteristics of living
things? Living things . . .
 1.)
have cells.
 2.) sense and respond to change
 3.) reproduce
 4.) have DNA
 5.) use energy
 6.) Grow and develop
3. What is a cell?
A
cell is a membrane-
covered structure that
contains all the materials
needed for life.
An organism can have
anywhere from one cell to
trillions of cells.
PROKARYOTIC CELL
EUKARYOTIC CELL
PLANT
or
ANIMAL
A PLANT CELL
ANIMAL CELL
4.) How do they respond
to change?
a stimulus – a
change in the organisms
environment that affects its
activity.
Through homeostasis –
organisms ability to maintain
a stable internal environment.
Through
STIMULUS
HOMEOSTASIS
What happens when your
body gets too hot?
5.) How do living things
reproduce?
Through
asexual reproduction
– single parent produces
offspring identical to parent.
Through sexual reproduction –
requires two parents to produce
offspring that shares
characteristics of both parents.
6. What is DNA in living
things?
DNA
(Deoxyribonucleic acid)
– hereditary material that
controls all function of the cell.
Heredity – passing down of
characteristics from one
generation to the next.
DNA
HEREDITY
7. How do living things
use energy?
They
use energy to carry
out life’s activities.
Metabolism – is the
total of all chemical
activities.
METABOLISM
8. How do they grow and
develop?
Single
celled organisms
grow by the cell getting
larger.
Multi-celled organisms grow
by increasing the number of
cells.
SIMPLE BARE
NECESSITIES of LIFE
1.) What are the basic
necessities for all
organisms?
a.) Food
b.) Water
c.) Air
d.) Living Space
2.) What does food
provide?
Food
provides
organisms with energy
and materials to carry on
life processes.
3.) Why are producers
named producers?
Producers produce their
own food.
 Ex. Plants use energy
from the sun to make food
from water and carbon
dioxide.
4.) What are consumers?
Consumers
must eat
(consume) other organisms to
get food.
 A salamander is a consumer
because it gets the energy it
needs by eating insects and
other organisms.
5.) What are
decomposers?
Decomposers are
organisms that get their
food by breaking down
the nutrients in dead
organisms.
6. How much water
makes up cells?
70%
of cells are made
up of water.
7. What elements make
up air?
Different
gases including
oxygen and carbon dioxide.
Organisms on land get oxygen
from the air.
Organism in water obtain
dissolved oxygen or come to
the surface.
8. What’s important about
where you live?
It
must contain all of the things
organisms need to survive.
Because space is limited,
some organisms compete with
each other for food, water, and
other necessities.