etc. Other cells need less energy to do their work and have less mitochondria. Endoplasmic reticulum (ER)- It is a network of membranes throughout the cytoplasm of the cell. There are two types of ER. When ribosomes are attached it is called RER and SER when there are no ribosomes attached. The rough endoplasmic reticulum is where most protein synthesis occurs in the cell. The function of the smooth endoplasmic reticulum is to synthesize lipids in the cell. The smooth ER is also helpful in the detoxification
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Assessment Grade and Criteria Achieved Y/N Resubmission Achieved Y/N Resubmission Achieved Y/N P1 describe the organisation of the eukaryotic cell in terms of the functions of the organelles Y/N P2 describe the four different tissue types Y/N M1 use diagrams or micrographs to compare and contrast the four tissue types Y/N D1 explain the relationship between cells‚ tissues‚ organs and organ systems in the organisation of the human body Y/N Student Declaration
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1. Introduction Microscopy is an essential technique not only in cell biology but natural science as a whole. We compared different types of microscopic techniques ‚ according to the specimen used and the scope of the experiment. Two specimens‚ stained and unstained‚ containing CHO cells‚ were prepared‚ examined and analyzed under the microscope using bright field (HF)‚ dark field (DF) and phase contrast (PH) settings. In addition‚ the four phases of cell division cycle were estimated.. Bright
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References: n/a. (2012). ROUGH ENDOPLASMIC RETICULUM. Available: http://epiehonorsbiology.wikispaces.com/Rough+endoplasmic+reticulum. Last accessed 23/9/12. Moonie N‚ Aldworth C‚ Billingham M & Talman H (2012). BTEC Level 3 National Health and Social Care BOOK 1. United Kingdom: Pearson Education Limited. P181 CYTOPLASM - Annenberg
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CODE-Y NEET-UG – 2013 TEST PAPER WITH ANSWER (HELD ON SUNDAY 05th MAY‚ 2013) 1. The eye of octopus and eye of cat show different patterns of structure‚ yet they perform similar function. This is an example of : (1) Analogous organs that have evolved due to divergent evolution (2) Homologous organs that have evolved due to convergent evolution (3) Homologous organs that have evolved due to divergent evolution (4) Analogous organs that have evolved due to convergent evolution (4) Select the correct
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formation Found on the surface of rough endoplasmic reticulum Two types 70S and 80S Centrioles Cylindrical in structure formed by microtubules. Participate in cellular division Chloroplasts It’s a type of plastids found in plant cells Contain green chlorophyll which helps in photosynthesis. Endoplasmic reticulum Found fused to nuclear membrane Serves as cell’s transport system Two types SER and RER. Smooth Endoplasmic reticulum lack ribosome In rough endoplasmic reticulum ribosomes are found on the surface
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A mitochondrion (Terminologia histologica: Mitochondrion) is a cell organelle of eucaryotes with ovoid shape that is the major source for intracellular energy. Mitochondria are present in all but mature red blood cells. They can migrate through the cytoplasm and change their shape. These organelles have an outer unit membrane (membrana mitochondrialis externa) and an inner membrane (membrana mitochondrialis interna). The latter has protrusions into the matrix (mitochondrial plasma). Depending on
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GROUP 6 ANIMAL CELL and It’s Functions ANIMAL CELL: About animal cell usually have an irregular shape. are eukaryote cells‚ or cells with a membrane bound nucleus. DNA is housed within the nucleus. Also contain other membrane bound organelles‚ or tiny cellular structures that carry out specific functions necessary for normal cellular operation. smaller than plant cells. Cell Membrane is the outermost component of a cell. it is composed of 55% proteins‚ 25% phospholipids
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expressions http://micro.magnet.fsu.edu/cells/golgi/golgiapparatus.html) The rough endoplasmic reticulum is the site where most cell membrane components and materials that are to be removed from the cell are made. (Alberts et al‚ 2004 pg.19). According to Alberts et al 2004‚ ‘the Golgi apparatus performs several functions in close partnership with the RER’. Proteins and lipids built in the rough endoplasmic reticulum bud off into vesicles that move through the cytoplasm until they reach the Golgi.
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of a fundamental argument regarding the origin‚ development and function of the Golgi. The Golgi is an essential organelle that is intricately involved in the transport and modification of proteins. Most proteins are synthesized within the endoplasmic reticulum‚ then transported to and modified sequentially within the cis‚ medial and trans Golgi. This organelle is highly involved in both the endocytic and exocytic pathways and as such is essential for cell survival. There are two distinct theories
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