Download Characteristics of living things

Characteristics of living things
Aseel Samaro
What is this building made of ?
What are we made of ?
Cells: The Building Blocks of Life!
What makes the dog alive ?
Characteristics of living things
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Living things have Cells
Living things Sense and respond to change
Living things reproduce
Living things have DNA
Living things use energy
Living things grow and develop
Living things have Cells
Every living things composed of - one or - more cells.
Thus, cells are the basic unit of living things.
A cell is a membrane-covered structure that contains all the materials
necessary for life.
Cells contain
Nutrients
DNA information
many other things to help our body function in everyday activities.
Living things have Cells
Trillions of cells make up these organisms
Each of these organisms is
made of only one cell
Living things have Cells
 Cells perform specialized functions
For example:
1. Nerve cells  transport signals
2. Muscle cells  help in movement
Living Things Sense and Respond to
Change
All organisms have the ability to sense change in their environment
and to respond to that change.
Please, expose some light on your friend’s eye
Stimulus (plural, stimuli) is a change that affects the activity of the
organism
Stimuli can be:
 Light
 Sound
 Hunger
Living Things Sense and Respond to
Change
A gentle touch causes a response in the plant
Living Things Sense and Respond to
Change
Give more examples of stimuli

Living Things Reproduce
Living Things Have DNA
 The cells of all living things
molecule deoxyribonucleic acid (DNA)
contain
the
 DNA controls the structure and function of cells.
Thus, DNA is a special molecule that is found in the cells of
all living things. It provides instruction for making molecules
called protein
Protein take part in almost all of the activities of an
organism’s cell
Living Things Use Energy
 Organisms use energy to carry out the activities of life.
Name four activities in living things that require energy.
Living Things Grow and Develop
 All living things, whether they are made of one cell or many
cells, grow during periods of their lives.
 In a single-celled organism  the cell gets larger and divides,
making other organisms.
 In organisms made of many cells  the number of cells gets
larger, and the organism gets bigger.
In addition to getting larger, living things may develop and
change as they grow.
Living Things Grow and Develop
Over time, acorns develop into oak seedlings, which become oak trees.
Living Things Grow and Develop
What are four living and four nonliving
things that you interact with or see
everyday?