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the cytoplasm by the membrane and can be used to digest invading cells or break down worn out components of the cell wall. Ribosome AQA A-Level Biology 3.2.1.1 Structure of eukaryotic cells The smallest and most numerous of the cell organelles - ribosomes either float free in the cytoplasm or are attached to the rough endoplasmic reticulum.
2.1.1 - Cell structure. Outline how a student could prepare a temporary mount of tissue for a light microscope. Outline how a student could prepare a temporary mount of tissue for a light microscope. Obtain thin section of tissue e.g. using ultratome or by maceration. Place plant tissue in a drop of water.
Electron Microscopy (TEM) or can look at the outer surface of a sample using Scanning Electron Microscopy (SEM), analogous to a stereo light microscope. 7.1.2 Transmission electron microscopy (TEM) The greater resolving power of electron microscopes derives from the wave properties of electrons. Unlike light waves, the wavelength of an electron ...
les and Their FunctionsRibosomeThe smallest and most numerous of the cell organelles, ribosomes either float free in the cytoplasm or are attached to. the rough endoplasmic reticulum.It’s made up of proteins and RNA, is not surrounded by a membrane and is. Structure of ribosome Image Source: cnx.org.
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Outline how the organelles in pancreatic cells work together to produce and release these protein molecules from the cells. In your answer you should use appropriate technical terms, spelled correctly. 2. AA scientist drew a diagram to explain the mechanism used to load sucrose into the sieve tube elements.
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Cell Specialisation (1.1.3) Cells specialise by undergoing differentiation: a process that involves the cell gaining new sub-cellular structures in order for it to be suited to its role. Cells can either differentiate once early on or have the ability to differentiate their whole life (these are called stem cells).
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Which organelle is found in the cytoplasm of plant cells?
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What is a standard TEM?
Cytoplasm: The gel like substance inside a cell. Light microscope: Device that uses visible light and a series of lenses to produce an enlarged image of an object. Mitochondria: Structures in the cytoplasm of cells where respiration takes place (singular is mitochondrion). Multicellular: Having more than one cell.
