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Grade 8 ScienceSt. George Catholic Elementary School
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hey mr r its josh l if u ever read this HI and how r u doing if this is in the future i hope you have a good summer and mabe we will run into each other some time soon hope to talk to u soon

Micronutrients
We can get proteins from meat, or other foods likebeans and peanut butter.

Nutrients vs Calories
It's more important to count nutrients because they help our cell's survive, calories are the thing's that give us energy

Specialized Cells
We have many specialized cells in our body.Some advantage are they are unique and they fight off infections easier. they also have all different abilities. they perform specialized functions in a certain organism and they work together. It is a type of cell that is structurally adapted to perform specific functions.Then there are some disadvantage like you need more energy and if one specialized cell fails then the others don't work so efficient . Therefore, specialized cells are important because each cell can have have a significant job that is vital for organisms.

Canada Food Guide
My menu
Breakfast
-1 cup of milk 1% (250 mL)
-1 slice/ serving of bread (35 g)
-1 serving of steamed broccoli (125 ml 1/2 cup)
-1 serving of oranges
-1 egg
-1 serving of cereal (cold) (30 g)

Lunch
-1 serving of honeydew (125 ml)
-1 serving of cantaloupe (125 ml)
-1 slice of tortilla (whole wheat) (35 g)
-1 slice of baguette (35 g)
-1 glass of fruit juice (125 ml)

Dinner
-1 serving of beef (75 g)
-1 cup of milk 1% (250 mL)
-1 bowl of white rice (125 ml)
-1 slice of pita (35 g)
-1 serving of snow peas (125 ml)

Snack
-1 glass of water
-1 serving of apple

Specialized Cells
Specialized cells give the bodies different abilities. They can perform specialized functions and they work together. Each type of cell has a different structure and set of functions. Some of these cells are fat cells, red blood cells, nerve cells, muscle cells and many more.The advantages of having specialized cells are that they allow us to fight off infections easy like fighting off a cold. Everyone is unique. The disadvantage is it only has one function and cant do more than one thing. These cells are found in the leaves. Therefore, specialized cells are important because they work together to perform specific functions that is vital for organisms. The structure of each cell is matched to the unique function that it carries out within an organism.

Specialized Cells
Specialized Cells
Having specialized cells is better than having just one cell. But, there are pros and cons for both. The pros of having specialized cells are being able to manage your energy, all of your systems work(skeletal,immune,digestive,respiratory) efficiently together and your body will be perfect. The cons of having a one-cell body are... If there was only one cell system such as the skeletal system It is easier to get sick since there is no immune system. You would not be able to control your body's energy level since your body would use 100% of your energy from your one cell system, you would be weaker since your bones and other parts of your body would have to be divided evenly between your cell system. If our body was a one cell system, we would eventually shut down because our major organs would be weaker since its only a one cell system.So it would be easier to get sick. So I think that it is better to have a specialized cell system rather than a one cell system. Last example ( when you have a specialized cells, your body has the cells to work together and sustain health when your sick, your immune system works together and fights off the sickness. If you have a one-cell system, your body wouldn't be able to work together since it only has one type of cell,so, if your sick, your body wouldn't do anything since you don't have an immune system to fight it off so your body would get worse and get even more sick then you eventually die).

Specialized Cells
There are over 200 different kinds of cells in your body. We need them for different functions

Nerve cells - long and skinny to carry impulses
Red blood cells = small and flexible to fit through blood vessels.
Skin cells - spread out to cover the body.

Specialized Cells
Having specialized cells allows your body to do more then just one thing, your body can do many things at the same time. If your body had just one specific cell, then your body would be weak in many ways. Some advantages are if u get sick or hurt, you can heal faster because all your different cells work together to repair the bad cells. For example, if you get sick in any way like the flu then all of your blood cells would help you get over the sickness. also you would have more energy because all the food you eat, cells would absorb the nutrients and get all the energy they need for daily activities. A disadvantage is that if u have just one type of cell then you would be able to do other things that help you body. For example, if u just have brain cells then the rest of your body would shut down and soon you would die . That's why you need specialized cell in your body .

Systems
Immune system

The immune system is one of the most important systems in our body. It fights off our illnesses that we get. There are 5 different parts of the immune system. Those 5 parts are Thymus, bone marrow, spleen, lymph nodes and immune system. Bone marrow is a soft fatty substance in the cavities of bones in which blood cells are produced. Spleen-is removal of blood cells for the immune system. Thymus-produces t-cells for the immune system. Lymph nodes are small bean shaped glans throughout the body. And the immune system fights off illnesses.