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A chloroplast makes food- but it's exclusive, plant-only food! Since this food maker is only found in plants, it can be compared to a piece of equipment that makes food out of only plants.
:)
There's a reason why the mitochondria of a cell is called the "powerhouse"! While conducting cellular respiration, mitochondria release energy. In a PIZZA HUT, for example, there might be a box full of wires and switches that takes the signals coming from the power company and turns it into elctricity running the lights, ovens, phones,etc.
In the cell, a lysosome engulfs captured waste in vacuoles and pours in its destructive insides to eliminate it. In a fast food restaurant, the garbage disposal will take trapped waste (i.e. a sink) and, by means of chemicals or shredding, obliterates it. In this way, a lysosome and an Insinkerator are similar.
Vacuole size is different for plant and animal cells, but the basic function is the same. In any cell, the vacuole's job is to store nutrients, water, etc. A fast food restaurant might use their many fridges to keep frozen foods frozen, drinks fresh, and other articles for future use.
In a cell, the nucleus control's the cell's activities, reproduction, etc., etc. The same way, in a fast-food restaurant, the manager tells each worker what their shift is, controls the calendar and how the franchise will operate, and so on. Basically, both the nucleus and a manager act as
the BOSS!
Uh oh... you're being sent to the manager's office. The nucleus needs you, so you're going through the nuclear envelope, which only allows certain objects through, such as nutrients. The "big guy"'s office is only open for certain people, and that locked office makes sure of that. Are you in trouble? Getting a promotion? You never know why that nuclear envelope is letting you in...
Nestled in the folds of rough ER, ribosomes are like an assembly line for proteins. A food processor in a fast food restaurant does the same: It makes the food, blends it, and gives it the individual taste it has.
In a franchise, equipment costs money! In a cell, the nucleolus' job is to create ribosomes, which are comparable to food processors. The money handed out through a cheque will provide the restaurant with more of those machines. A nucleolus and the manager's checkbook are alike because they both "make" ribosomes, or food processors.
A nucleus controls the cell's actions, how it reproduces, etc. etc. The same way, a fast-food manager tells each worker what to do, instructs the cell on how to operate, and basically is the BOSS!
The Golgi body's job is to put proteins together in little membrane-packets and send them off to other parts of the cell or out of the cell. A drive-thru worker does the same thing, sort of, because they pack up little meals of burgers, coffees, and the other required "proteins" and hands them out of the window and away...
A building is only a BUILDING if it has wAlLs, right.... Duh! The cell membrane is what covers and protects both types of cells, and is selectively permeable. A fast food restaurant has its cement or brick walls, which have doors to let in hungry customers! A cell membrane and the builing's walls are similar because they both surround and enclose the cell.
The ER in a cell is the "highway", ribosomes and other organelles nestle there. In a fast food restaurant, those mysterious kitchen hallways are "where it all happens": All the equipment, etc. is kept there.
Did you know that some popular fast-food chains install bulletproof windows in their buildings? Only some, though. These are meant for extra protection.
The same way, the cell wall is only present in plant and prokaryotic cells, and one of its purposes is to further protect the cell from unwelcome substances.
Chromatin is just the random stuff that make up your chromosomes: Protein, DNA, etc. BUT it is also the builing blocks for making YOU. These are what define you and what you couldn't be identified without. By the way, do you know what makes your favorite fast food taste that way? Why your spicy McChicken is.. spicy? It's the chemicals and spices in it. Without chromosomes in you or spices in your fast food, you'd both be bland!
Step into the restaurant. Feel the woosh of cool air past you. Enter that sacred place of fast food and the place itself is like... a cell's cytoplasm? The cytoplasm is where all the other organelles float around, sort of like the atmosphere....