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The Necessities of Life!

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Sameeha Salman

on 10 September 2014

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Transcript of The Necessities of Life!

Energy is given to all organisms through eating food.
Nutrients from food are used in our bodies to give us energy.

an organism that can
food by using energy from around it.(for example, photosynethesis)
: An organisim that eats other organisms to get the energy they need.
An organism that gets energy by breaking down the remains of dead organisms or animal wastes.
Plants are producers who make their own food by using the suns energy.
Putting It All Together
Living things get food by eating other living things.
Nutrients are made of molecules which are made of many atoms combined.
Compounds are molecules made of different types of atoms.
6 different elements(carbon, hydrogen, nitrogen, oxygen,phosphorus and sulfur) combine to form proteins, carbohydrates, lipids, ATP and nucleic acids.
Air is a combination of a variety of gases like carbon dioxide, nitrogen, and oxygen.
Oxygen is what we humans inhale.
Plants and bacteria use oxygen as well as carbon dioxide through the process of photosynthesis to produce food and oxygen.
animals are animals that can live without air like Clostridium botulinum.
A Place to Live
All beings need shelter.
Many organisms may have to compete for food, water, and other resouces.
Claiming homes is necessary for many creatures, then they will try to protect themselves from predators.
Water makes up about 70% of our our cells.
Most metabolism chemical reaction involve water.
The Necessities of Life!

large molecules that are made up of smaller molecules called amino acids.
Breaking down proteins is the method that living things use to supply their cells with amino acids, which join together to form new acids.
Some proteins are very small and others are large enough for its structure to be seen.
Hemoglobin blinds oxygen and distributes it to the rest of the body
Three groups of organisms based on how they get their food.
molecules made of sugar that provide and store energy for cells.
Carbohydrates are broken down by the organisms cells in order to release the energy that they have.
SIMPLE CARBOHYDRATES: an example of foods that contain it is table sugar, corn syrup, white flour, and many others, because they are made of one or a few sugar molecules. The most common source of energy is Glucose.
COMPLEX CARBOHYDTRATES: is a storage made up of 100s of sugar molecules and used as a storage for an organisms extra sugar.
Molecules that have many jobs and cannot mix with water. They either store energy or form the memebranes of cells.
a lipid that contains phosphorus and that form the memebrane of the cell.
The head od this lipid is attracted to water, unlike the tail.The tails of 2 lipids come together, forming the membrane, as shown in the picture.
FATS AND OILS- the type of lipid that stores energy. when all the energy from the carbs has been used up, the organism uses this lipids energy. Most plant lipids are oils, which are liqued, and most animals are fats, which are solid.
Nucleic Acids...
Nucleic Acids-molecules that carry the directions of how to make a protein. It is made up of 1000s of nucleotides.
An example of nucleic acid is a DNA, which is like a recipie book, with instructions on how to make proteins.
When a protien has to be made, the cell refers to the pattern of nucleotides in the DNA, and the pattern tells shows in what order to link the amino acids.
Adenosine TriPhosphate
ATP-a major molecule that acts as the main energy source for cell proccesses.
Carbs and lipids transfer energy to ATP so that they can be provided whit energy for other activities the cells will do.
By: Sameeha, Dania and Naimah
Chapter 2, Section 2
Every living thing needs water, a place to live, and food in order to survive.
What else do living things need?
DO YOU KNOW??!!!!!
Full transcript