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27 avr. 2017 · Depending on the cell, examples of these functions can include photosynthesis, breaking down sugar, locomotion, copying its own DNA, allowing certain substances to pass through the cell membrane while keeping others out, etc. Proteins are made of amino acids, which are like the “Legos” of biochemistry.
Introduction to the cell. Cells are the most basic unit of life. All cells have a membrane that separates them from the outside world. Although cells are small, they are not simple. Cells contain different components, such as the cytoplasm, ribosomes, and genetic information in the form of DNA. Created by Sal Khan.
- 6 min
- Sal Khan
All cells evolved from a common ancestor and use the same kinds of carbon-based molecules. Learn how cell function depends on a diverse group of nucleic acids, proteins, lipids, and sugars.
The Cell (2000) When Stargher, a serial killer who drowns his victims in torture cells and performs bizarre rituals with their bodies, falls into a coma, the FBI asks Deane to enter the his mind. The price before discount is the median price for the last 90 days. Rentals include 30 days to start watching this video and 48 hours to finish once ...
- 107 min
686465. Anatomical terminology. [ edit on Wikidata] The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'.
Key points: All cells have a cell membrane that separates the inside and the outside of the cell, and controls what goes in and comes out. The cell membrane surrounds a cell’s cytoplasm, which is a jelly-like substance containing the cell’s parts. Cells contain parts called organelles. Each organelle carries out a specific function in the cell.
19 déc. 2023 · Cell types can look different, and carry out distinct roles within the body. For instance, a sperm cell resembles a tadpole, a female egg cell is spherical, and nerve cells are essentially thin tubes.
