in organelles (mitochondria and chloroplasts). To extract DNA from its location‚ several laboratory procedures are needed to break the cell wall and nuclear membrane‚ and so appropriately separate the DNA from other cell components. When doing so‚ care must be taken to ensure the process does not damage the DNA molecule and that it is recovered in the form of a long thread. Complications in this step includes Breakage during isolation‚ DNA degraded by nucleases‚ joint isolation of polysaccharides
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Cell Biochemistry BOI103 Lecture 1 Introduction to the Study of Cell Course: CELL BIOCHEMISTRY (BOI 103) Type: Compulsory Total Units: 3 (3 x 1 h lecture per week) No. of Lectures: 42 Lecturers: 1. Prof. Dr. K. Sudesh Kumar Room 402‚ Block G09A PPSKH Tel: 6534367 Email: ksudesh@usm.my 2. Dr. Rashidah Abdul Rahim 3. Dr. Chew Bee Lyn Objectives: Introduction to cells‚ organelles‚ molecules; structure & function relationship; working of a cell Course
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Quiz #1 (Pay attention to the answer key) Question 1 In the scientific method‚ the condition which is deliberately changed is referred to as the D. experimental variable. Question 2 Which of the following is not a step in the scientific method? D. Scientific Law Question 3 When an organism’s DNA is permanently altered‚ we say that it E. mutates. Question 4 Which answer choice is not a defining characteristic of life? C. disorder
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to these sample questions and the test banks‚ you are advised to study the diagrams from all chapters and be able to label main structures. 1) The function of the rough endoplasmic reticulum(RER) is: a) Digestion b) Support c) DNA isolation d) Protein production 2) The cell membrane is composed of two layers of a) Proteins with interspersed lipids b) Hydrophilic lipids‚ proteins and sugars. c) Phospholipids with proteins and sugars interspersed d) Glycoproteins
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occur in plants but not in animals. 11. Which of the following is a prefertilization barrier? a. hybrid inviability b. gamete incompatibility c. hybrid sterility 12. Which of the following is a postfertilization barrier? a. mechanical isolation b. hybrid
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and evolution. Hypothesis that modern humans have a single origin was first proposed by Charles Darwin’s Descent of Man‚ and was verified by a study of present-day mitochondrial DNA. Within nearly all human cells there are tiny structures called mitochondria‚ which generate the energy in our bodies. They contain their own separate DNA‚ called mitochondrial DNA‚ which is commonly used to trace ancestry being a part of the genome not shuffled about by the evolutionary mechanisms that generate diversity
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where the DNA is located. Prokaryotes do not contain organelles bound in a membrane structure‚ so there is no nucleus present. In prokaryotes the DNA is located in a region called nucleoid‚ which lacks a membrane. In cells organelles‚ such as the mitochondria‚ are found. Organelles present in the cell vary between the cell types. So as mentioned earlier can you find a nucleus in eukaryotic cells‚ but not in prokaryotic cells. Lysosomes can be spotted within animal cells‚ but not in plant cells. Also
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human body does through the mitochondria. The mitochondria is an organelle used to create energy for the human body. It was described first by Richard Altmann in 1890 ("Mitochondria."). Altman described the mitochondria as a rod shaped organelle found in most cells ("Mitochondria."). The mitochondria is a very complex organelle made up of many different parts. It is a double membrane organelle that consists of an inner and an outer membrane ("Structure of Mitochondria." ). There is space between
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interest in the mitochondria. The book gives very detailed descriptions about the mitochondria and biological terms regarding about the mitochondria. The title “Power‚ Sex‚ Suicide” got me interested to read the book. The title relates to the book itself because the book itself talks about a bit of evolution of life‚ the sexual reproduction‚ and the process of aging. “Mitochondria – The Meaning of Life”‚ the subtitle‚ gives the general idea of what the book is about. At first‚ mitochondria was typically
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make it possible for us to function and live. Inside these cells are organelles‚ which are smaller than the cell itself. However‚ without these organelles‚ the cell would not be able to function and we would die. Of these many organelles are the mitochondria‚
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