Science: Cell Parts
|mitochondria||cell organelles that break down food molecules and release energy.|
|lysosome||a cytoplasmic organelle that contains chemicals and digests wastes and worn out cell parts.|
|cell wall||the rigid structure made of cellulose that surrounds a plant cell membrane and supports and protects it.|
A vacuole is the storage area of the cell. Vacuoles store water, food, and waste. The endoplasmic reticulum (ER) is a series of tunnels throughout the cytoplasm.
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP and NADH via energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation.
Proteins are assembled at organelles called ribosomes. When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance.
Proteins aren’t the only type of cellular waste. Cells also have to recycle compartments called organelles when they become old and worn out. For this task, they rely on an organelle called the lysosome, which works like a cellular stomach.
The cell wall and the central vacuole help to support the plant cell and help it to maintain its shape.
Caulerpa taxifolia is the largest animal cell. it is an aquatic alga. Largest animal cell is ostrich eggs measuring about 170*135 mm in diameter.
Major structural differences between a plant and an animal cell include: Plant cells have a cell wall, but animals cells do not. Plant cells have chloroplasts, but animal cells do not. Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles, if any are present.
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.
We need to eat and drink to survive, and so do our cells. Using a process called endocytosis, cells ingest nutrients, fluids, proteins and other molecules.
Yes, cell also needs it in the form of energy to perform many activities. As every organism requires food to live so as the cell requires it. Cell requires energy to perform physicochemical activities. It derives its energy from ATP molecules produced by oxidation of glucose.
Does food that we eat contain dead cells or alive cells? Beef, chicken, pork, shrimp, tuna (even sashimi), or any cooked vegetable are all dead cells.