Name and describe four membranous organelles and 4 non membranous or.pdf

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Name and describe four membranous organelles and 4 non membranous organelles found in cells and why is the plasma membrane so important to cells and to life in general?Name and describe four organelles that produce or process materials for the cell?Do you think all cells have roughly the same number of mitochondria? Explain your answer.Why is cellular diversity important in building complex organisms such as the human body? Solution Membranous organelles : Lysosome, Endoplasmic reticulum, Golgi complex, Mitochondria Non memranous organelles: Ribosomes, Centrioles, actin and tubulin filaments, basal bodies Generally speaking, membranous organelles are present only in eukaryotes and non membranous organelles are present both in prokaryotes and eukaryotes. Plasma membrane is a very important part of a cell. It helps the cell to intake nutrients and excrete waste. It selectively permits various biomolecules and ions. It maintains the osmotic potential and ph of the cytoplasm of the cell which is very crucial for the survival and physiological functions of the cell. Plasma memrane plays very important role in many other normal physiological functions. Nucleus, ribosomes, endoplasmic reticulum and golgi complex are some of the organelles which produce and process materials for the cell. Nucleus produces various biomolecules and also RNA. Ribosomes produce proteins. Endoplasmic reticulum and golgi complex modify proteins. All cells do not have the same number of mitochondria. Cells which need more energy have more number of mitochondria compared to the cells which are physiologically inactive. Cellular diversity is important in forming organs. types of cells with similar physiological function group together to form a tissue and the tissues form the organ. different organs form the organism..

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Homework: hmwk 5 Score: 0 of 1 pt Bookmatch 4-17 (book/static) Oli 3 of 5 (0 complete) HW Score: Que (Ratio analysis) Artz, Inc.\'s financial statements for 2015 are shown in the popup windowEE The chief financial officer for Artz has acquired industry averages for the following ratios in the popup window: EEB a. Compute the ratios listed above for Artz. b. Compared to the industry: (1) How liquid is the firm? (2) Are its managers generating attractive operating profit on the firm\'s assets? (3) How is the firm financing its assets? 4) Are its managers generating a good return on equity? a. Compute the ratios for Artz. The current ratio is (Round to two decimal places.) Solution a. Current ratio = total current assets / total current liabilties = 2000 / 800 = 2.5.

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Hand geometry 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages Hand geometry 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages Solution Hand geometry (1) Definition Hand geometry readers measure a user\'s hand along many dimensions and compare those measurements to measurements stored in a file. Hand geometry is a biometric that identifies users by the shape of their hands. Hand geometry is not thought to be as unique as fingerprints, palm veins or irises, fingerprinting, palm veins and iris recognition remain the preferred technology for high-security applications. (2) Importance Hand geometry biometrics is not a new technique. It is first mentioned in the early 70’s of the 20th century and it is older than palm print which is part of dactiloscopy. This technique is widely accepted and the verification includes simple data processing. Hand geometry is an ideal candidate for research and development of new acquisition, preprocessing and verification techniques. (3) Advantages Disadvantages Signature Recognition (1) Definition Biometric identification by automatically scanning a person\'s signature and matching it electronically against a library of own signature. It is a behavioural biometric. It can be operated in two different ways: Static: In this mode, users write their signature on paper, digitize it through an optical scanner or a camera, and the biometric system recognizes the signature analyzing its shape. (2) Importance (3) Advantages Disadvantages.

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Consider the many protein functions. Identify the protein function by a check mark. DNA transcription encoding of genes cell membrane receptors ion channels DNA replication Solution 1. DNA transcription: Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA by enzyme RNA polymerase. 2. Encoding of genes: Protein encoding genes, or protein coding sequences are commonly described as structural or regulatory. Structural genes encode enzymes and proteins. So, this is a function of proteins. 3. Cell membrane receptors: Cell surface receptors are integral proteins that bind to external ligand molecule. SO, this is a function of protein. 4. Ion channels: Thy are pore forming membrane proteins whose functions include establishing a resting membrane potential, Shaping action potential and other electrical signals by gating the flow of ions across the cell membrane controlling the flow of ions across secretory and epithelial cells and regulating cell volume.So, this is a function of proteins. 5. DNA replication: The process of DNA replication cannot work if the DNA strand cannot be separated. To separate the DNA strands, proteins are used. So, this is a function of proteins..

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