Unit 5 Lesson 1
Attendance link: http://goo.gl/forms/0M7lRExiSy
Required Class Connects
Tuesday, Wednesday, & Thursday
1:30-2:30 pm
Be active and participate in class.
Be respectful to your classmates
Be positive in the chat box and use it correctly.
Have a working microphone!
You will need it during the lessons and break out rooms.
If you have a question, please place it in the chat box and repost it if
I don’t see it.
Identify the basic needs of living organisms:
food, water, oxygen (animals) or carbon dioxide
(plants), and appropriate environmental
conditions (e.g., temperature, shelter, and
space).
Explain the importance of water to living
organisms.
In the living world, no organism can survive by
itself.
Living things depend on other organisms and
their environment to supply them with their
needs.
Every organism needs other things, living and
nonliving, to meet the challenges of life.
As living things, they must meet three major
challenges of life:
Getting and using energy
Reproducing
Maintaining structure
How does a bacterium meet these needs?
There's a short list of requirements for
successfully meeting the challenges of life. We
call these requirements basic needs.
They include:
Water
Oxygen or carbon dioxide
Food
The right environment including shelter,
temperature and space
Water is important to all organisms, right down
to their individual cells.
Water is necessary for physical and chemical
processes.
Certain substances important for survival must be
dissolved in water before they can be used by
organisms.
How do plants get water? Through their roots.
How do animals get water? Drinking/eating
How do bacteria get water? Molecules enter
through the cell membrane.
About 60% of the human body is water.
You need water to lubricate your joints, flush wastes
from your body, maintain your blood pressure, and
perform just about every other function in your
body.
If a person weighs 130 pounds, how much of that
weight is water?
130*0.6 = 78 pounds
Even mild dehydration can cause immediate
symptoms, such as headaches, dizziness, and
exhaustion, and long-term symptoms.
These gases are important to plants and
animals.
Mammals need O2 for many chemical reactions
(RXN) in the cells.
Land animals get oxygen from the air via
breathing. Fish and other marine animals
acquire oxygen via dissolved oxygen in water
(think about a fish tank and why it needs a
bubbler).
Animals breath out CO2 that plants need for
their RXN.
During photosynthesis, plants use carbon
dioxide to make food and oxygen, and the
oxygen is then used in other cell processes and
as a waste product.
All organisms must have food to survive.
Food provides organisms with energy and
nutrients necessary to carry out life's activities.
For example, iron is a mineral needed to build red
blood cells. A diet that lacks iron could affect a
person's ability to make healthy red blood cells.
Someone with an "iron deficiency" might take
vitamins to boost iron levels in his system.
Food is necessary because it provides energy
and materials needed to maintain structure.
Approximately 80% of the energy humans get from food is uses to
carry out basic life activities.
Digesting food, circulating blood, breathing, growing, and repairing cells.
The rest is used for activities such as lifting objects, walking, or
exercising.
Are alligators native to lakes in Michigan?
Why not?
They need a warm environment because they are cold
blooded.
Every organism have unique adaptations that allow
them to live in certain kinds of environments.
Adaptation is something about an organism that allows it
to live and reproduce effectively in its particular
environment.
Each adaptation started out as a mutation. The mutation
allowed the organism to do better and pass the mutation
on to its offsprings.
One very important condition is temperature.
Climates vary across the globe, but organisms
generally have adaptations that allow them to
survive in one particular climate.
Many animals can live in a place because they
can take shelter from the elements.
Prairie dogs, like chipmunks, live in underground
burrows to keep cool in the summer and warm in
the winter. The burrows helps them maintain a
stable body temperature.
All organisms need a certain amount of space
to grow and reproduce.
Plants spread their seeds so that each one as
the opportunity to have space to grow.
If there are too many animals living in the same
area, they will compete for limited resources,
like food, water and shelter.
All organisms must meet the challenges of life
Getting and using energy, reproduction, maintaining
their structure.
To meet these challenges, organisms need food,
water, air, and the right environmental conditions.
OLS
Part 1 Online – 3Q
Part 2 Offline – 2Q
Study Island
Sections 2-4 should be completed
We will be completing section 1 this month.
So by the end of the month you should have ALL
science SI pathways completed.