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Chloroplast for President!
Transcript of Chloroplast for President!
Who is the Chloroplast?
Chloroplasts are found in many parts of plants, but are mainly found in the mesophyll tissue of leaves, where photosynthesis takes place.
Chloroplasts are lens shaped organelles. A chloroplast has two membranes, separated by a thin inter-membrane space. Inside, a chloroplast is filled with a fluid called stroma.
Chloroplasts also contained structures known as thylakoids; thylakoids are flattened, sac-like structures. Sometimes, thylakoids occur in stacks called grana. Thylakoid membranes contain chlorophyll, the pigment which causes plants to appear green, and which captures light for photosynthesis.
Chloroplasts are semi-autonomous organelles, which grow and reproduce within the cell. They have the own DNA and ribosomes, and produce their own proteins-the Chloroplast knows what needs to be done, and does it!
Meet the Running Mate: Lysosome
Lysosomes are membranous sacs, which contain a
variety of digestive enzymes. Lysosomes maintain an internal pH of about 5 using hydrogen pumps; the digestive enzymes they contain work best at this acidic pH.
The enzymes in a lysosome are capable of digesting nucleic acids, proteins, carbohydrates, lipids, and other materials. Lysosomes break these materials down into their components, which the cell can then reuse or excrete.
Lysosomes keep the cell clean. Without them, the cell would be overrun with debris and old, useless molecules. The cell couldn't survive without the lysosome to break them down. And, the building blocks-amino acids, fatty acids, etc-that the lysosome excretes after digestion can be used to build new molecules.
Lysosome-Out with the old in with the new!
Without the Chloroplast, our cell could
not survive. The chloroplast produces glucose, the molecules we need more than anything else, using photosynthesis.
Using photosynthesis, the Chloroplast makes glucose; from glucose, we make ATP. ATP is our energy currency. All work the cell does-growth, reproduction, etc-requires ATP. Without it, we would die. The chloroplast ensures that our "energy budget" is large enough for all the projects we want to undertake.
We also use glucose to build cellulose, which forms our cell walls. Cellulose walls keep us safe, and allow us to take in water without bursting. Without turgor, we'll wilt!
What does Chloroplast do for the Cell?
Our cell is a great place to live. But, we're only
a very small community in a very large world. The true test of any leader is how they get along with other cells in the ecosystem.
Chloroplast has a unmatched foreign policy plan: The chloroplast exports oxygen, which all cells need to survive. Everybody loves oxygen! The Chloroplast's plan generates a lot of goodwill. Because we produce oxygen, we, the plant cell, are essential to all life! All cells, and all other organisms, need us.
While those other organelles might be good for the cell, Chloroplast is best because he takes care of the whole world, and without him, life couldn't exist. Even we need oxygen for respiration.
Let's Reach for the Sun!
Don't vote for:
The nucleus' job is to keep track of the DNA, and organize everything we do here in the cell. But, too often, the nucleus gets it wrong. Some of the worst diseases are caused by nuclear mis-readings:
Emery-Dreifuss muscular dystrophy
And, worst of all:
The mitochondria is one of the worst producers of waste in the cell. Think of all that carbon dioxide!
Mitochondria have their own DNA,and just like the nucleus, they can mis-read it and cause diseases, like Leigh Syndrome, which can cause weakness and paralysis of the muscles and eyes, or even death.
The Golgi body transports proteins throughout the cell. When it breaks down, it can cause seizures and liver disease.
When temperatures drop, the cell membrane can freeze. We want a leader who can work under pressure!
Also, malfunctions of the cell membrane can cause Hyaline Membrane Disease, Alzheimer’s disease, Cystic Fibrosis, and Duchenne Muscular Dystrophy
The intercellular junctions hold our cell together with other. But, how much do they really know about our cell if they're on the outside?
The intercellular junctions can cause serious diseases such as hypomagnesemia hypercalcemia with nephrocalcinosis, Fatigue, and Seizures
Have you ever heard of a chloroplast disease?