good questions about mitochondria

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Using a fidget spinner to rotate in outer space. ... What keeps mitochondria from multiplying out of control and killing the cell? mitochondria has more activity or the numbers of them are more? Q: What are mitochondrial diseases or disorders? Therefore, how would it turn out if its structure is like the structure of lysosomes, what is going to happen? They are known as the powerhouse of the cell because they provide the location for the production of ATP (adenosine tri-phosphate). They also have their own ribosomes! It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. So only about 0.1% of your genes are in your mitochondria. This is an explanation by a good science teacher of how to explain biology. • Numerous mitochondria, large amount of cytoplasm and nucleus are contained in brown adipose cells. Does Krebs cycle occur in their mitochondria? Ans. Mitochondria provide energy for the cell. If mitochondria take in too much calcium, it can kill cells, and this has been linked to diseases like type 2 diabetes. Mitochondria also contain extranuclear DNA that encodes a number of rRNAs, tRNAs, and proteins. Think about your mitochondria like a power station. Mitochondria are like the power house of the cells. Can one build a "mechanical" universal Turing machine? What location in Europe is known for its pipe organs? About this quiz: All the questions on this quiz are based on information that can be found at Biology: Mitochondria. The DNA in the nucleus - sequenced during the human genome project - is 3,000,000,000 bases long and has about 25,000 genes. How critical is it to declare the manufacturer part number for a component within the BOM? Practice questions ask you to identify components of the mitochondria, to distinguish some of the component functions, and to identify which cells contain the most mitochondria. The Origin of Mitochondrial Eve. ~xoxo Ari Thank you is not enough I have had a Mitochondrial Disorder for over 10 years now. Biology 4 Kids.com! • Fat cells are specialized in storing energy as fats. This is a wrong statement, even though the size of mitochondria in a single cell varies, we cannot say that one is exceptionally larger than others. in a Tau protein-dependent manner. The organelle in eukaryotes where the main stages of respiration occur. The techniques currently in use today range from simple coincubations of isolated mitochondria and recipie… [duplicate], Disproof mitochondrial eve is 6500 years old. In all cells, one mitochondria will be exceptionally larger than others. The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. Where are the ATP synthases synthesised? Mitochondria are also self-replicating, so they can replicate independently of the cell in which they are. (b). I have read it repeatedly that 'all living organisms use ATP as an energy currency etc' and 'some use GTP in addition'. The nano-machinary of energy production ATP synthase is well known to exist on mitochondrial inner membrane and chloroplasts. Mitochondria. Proton gradient := the gradient created when hydrogen ions moves to the ... P.S. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. The central question remains: can mitochondrial biogenesis, degradation and thus the entire life cycle of the organelle occur in the axon? So they can have aerobic respiration. The researchers believe that these diseases affect the signaling process by which the body tells the mitochondria how much calcium to take in or out. They are situated around the basal region of flagella. Discover answers to these and other intriguing biology questions. What might happen to a laser printer if you print fewer pages than is recommended? Ans. Does Krebs cycle occur in fast glycolytic muscle fibres? site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Answers: 3, question: answers The cell is prokaryotic because it contains mitochondria Ascientist is studying a cell and can clearly see that it has ribosomes and mitochondria. Multiple Choice Questions on Mitochondria (Mitochondrion) 1. I am studying the mitochondrial genome and have read that some contain introns. Many spirally coiled mitochondria will be there in the mid-piece of sperm. As per Karen hales, a faculty of Davidson College-North Carolina, Mitochondria fusion is a process where mitochondria constantly fuse (merge) and divide to form tubular networks. What will happen if mitochondria had a structure like lysosomes? While science may not have the answers to every question, some biology questions are answerable. Allan Wilson, the scientist who introduced Mitochondrial Eve, believed that she lived in east Africa about 2,50,000 years ago. Pick the best choice from the list of choices, and write it in the space provided. Syntaphilin is transported along the axon together with mitochondria; it can bind microtubules and it associates strongly with … Mitochondria Facts in cell 1. Connection between SNR and the dynamic range of the human ear, Split a number in every way possible way within a threshold. A quiz on mitochondria. Overexpression of GSK-3β significantly increases motile mitochondria (d). 1 answer. However, these introns code for proteins. As I understand as per literature reading and some khanacademy(https://www.youtube.com/watch?v=PtKAeihnbv0&t=315s): Is it wise to keep some savings in a cash account to protect against a long term market crash? The reverse is also true, when the station is receiving plentiful high-quality fuel and regular maintenance, power production increases. What is the exact definition of mitochondrial depolarization? They published the study in eLife. When the station slows down production or there isn’t enough fuel, the amount of power you receive reduces. Stub Mandrel 12:36, 3 November 2017 (UTC) How to explain the mitochondria clearly. Are cells guaranteed to get at least one mitochondrion when they divide? HealthnPropserity , 07/19/2010. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. • They are also called adipose tissue or Adipocyte with two types; white adipose cells and brown adipose cells. I believe prokaryotic cells lack mitochondria. Can anyone come up with anything that is good about the mitochondria that would convince someone to buy it? MCQ Biology - Learning Biology through MCQs, AllRightsReserved. Each question has only one correct choice – if you write more than one answer, you will not receive credit for the question. [duplicate]. Mitochondrial fusion. A high observed substitution rate in the human mitochondrial DNA control region (published in Nature Genetics, April 1997). Mitochondria generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy. The process involves the physical merging of both the outer and inner membranes of mitochondria. Inspired by the symbiotic origin of mitochondria and by the cell’s capacity to transfer these organelles to damaged neighbors, many researchers have developed procedures to artificially transfer mitochondria from one cell to another. Great resource This is a great resource for patients and families living with mitochondrial disease. Thanks a bunch! Posted Sep 29, 2017 3. Frequently such cristae occur in close-packed parallel arrays, and when sectioned transversely numerous discontinuities (fenestrations) may be noted along the course of such cristae (Plate 89).It is, however, in sections parallel to the surface of the cristae that the circular or nearly circular fenestrae are readily identified. Protein-coding introns in mitochondrial genomes, Is molecular oxygen (O₂) consumed in any process (in humans) other than acting as an electron acceptor for the ETC? The number of mitochondria in a cell depends on, b) Outer membrane has porin protein channels, a) The membraneous infolding’s of the outer membrane of mitochondria, b) the jelly like central matrix of mitochondria, c) The membraneous infolding’s of the inner membrane of mitochondria, d) enzymes located on the inner mitochondrial membrane, a) outer mitochondrial membrane attached to the cytosolic or C face, b) outer mitochondrial membrane attached to the Matrix or M face, c) inner mitochondrial membrane attached to the Matrix or M face, d) inner mitochondrial membrane attached to the cytosolic or C face, 6. c) The membraneous infolding’s of the inner membrane of mitochondria, 7. c) inner mitochondrial membrane attached to the Matrix or M face, 10. b) mitochondria without outer membrane. “From the perspective of a mitochondrial genome, my sister is much more valuable than I am,” Patel said. Im interested if anyone has an idea if this research has been done or how you would approach it. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. But the mitochondrion needs more than the 37 genes on the mitochondrial genome to work. 32. (c). I know not that much, just some basics, but this question really interested me :). World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. For about 2,38,000 of these 2,50,000 years, all human ancestors lived the Stone Age life in small groups. Ans. I am reading the following journal paper and I have come across the following statement: If a cell is needing energy more than the other cells, does it mean that it has more mitochondria or the activity of them is more? Mitochondria are cellular organelles, and the last thing I remember learning about them is that they're heavily involved in cellular respiration. I cannot really understand this. They have mitochondria. Back to Science for Kids Biology is a wondrous science that inspires us to discover more about the world around us. Mitochondria are small, energy-producing structures vital to the energy needs of the body. What really is a sound card driver in MS-DOS? I am 53 years old. If there is such known “Mitochondrial Eve”, does it means that all the mitochondrial dna in everyone's body is same? Inherited diseases may arise from mutations transmitted in maternal or paternal nuclear DNA or in maternal mtDNA. Patel’s lab found evidence of this pheonomenon in action in fruit flies, where they found a mitochondrial mutation that hurts male fertility . The mitochondrial genome is small, built of 16,569 nucleotides that encode 13 proteins, whereas the nuclear genome is made of 3.3 billion nucleotides. 4. Mitochondria have their very own DNA that is separate from the DNA of the organism in whose cells Mitochondria are found. Some creationists, such as Roger Liebi, actively exploit this article: (?) Mitochondrial DNA is about 16,000 bases long and has 37 genes (in humans). I have to come up with a sales pitch, and I need some good things about the mitochondria. Each cell can have from one to thousands of mitochondria. A mitochondrion is thus termed the powerhouse of the cell.. Mitochondria are commonly between 0.75 and 3 μm² in area but vary considerably in size and structure. The figure depicts the general structure of a typ… Could a dyson sphere survive a supernova? Mitochondria are believed to have transferred much of their genome to the nucleus. Mitochondria are countless in fat cells. I was given the mitochondria. They actually make some of the proteins involved in the electron transport chain. Related Pages. rev 2020.12.18.38240. Why are some Old English suffixes marked with a preceding asterisk? This is because the mother’s egg cell donates the majority of cytoplasm to the embryo, and mitochondria inherited from the father’s sperm are usually destroyed. Biology Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, Comparing maintenance energy costs of plant biomass vs bacterial biomass. What happens if you neglect front suspension maintanance? Some choices may be used more than once, and other choices may not be used at all. My project, for school, is that I have to sell something in a cell. Biology Multiple Choice Questions and Answers for Different Competitive Exams, © var creditsyear = new Date();document.write(creditsyear.getFullYear()); These data confirm that the mitochondrial genome originated from a eubacterial (specifically α-proteobacterial) ancestor but raise questions about the evolutionary antecedents of the mitochondrial proteome. LeslieJH5 , 07/18/2011. ... is a good candidate for a mitochondria-microtubule anchor (Das et al., 2003; Kang et al., 2008; Lao et al., 2000). Mitochondria have independent genome. 2. Why don't all dividend-yielding companies offer dividend reinvestment plans (DRIPs)? The DNA of the Mitochondria along with the ribosomes are present in the matrix of the Mitochondria. I know that mitochondrial protein-coding genes lack introns, but is this true for mitochondrial … Writing thesis that rebuts advisor's theory, Find out exact time when the Ubuntu machine was rebooted, Understanding the zero current in a simple circuit. How can I write a bigoted narrator while making it clear he is wrong? answered Feb 6, 2012 by King of Cards Level 2 User (2.9k points) ask related question comment. Thanks for visiting this site.Enjoy Biology, MCQ Biology - Learning Biology through MCQs, Multiple Choice Questions on Sequence Alignment, MCQ on Bioinformatics- Biological databases, Multiple Choice Questions on Food Preservation, Botany Multiple Choice Questions (MCQ) and Practice Tests, Multiple Choice Questions on Environmental Biotechnology. Both inherited and acquired mitochondrial … Which of the following is a semi-autonomous organelle? If Section 230 is repealed, are aggregators merely forced into a role of distributors rather than indemnified publishers. The energy (ATP) produced by these mitochondria … There are numerous inherited and acquired mitochondrial diseases. 33. Thank you . If mitochondria exist at random within a cell, isn't there a possibility that cell division will result in a daughter cell with no mitochondria? Frequently Asked Questions on Mitochondrial Disease. These genetic mutations are likely to be in the mitochondrial DNA (mtDNA), or possibly in the nuclear DNA (nDNA). Mitochondria with fenestrated cristae seem to be of rare occurrence. I'm just going to abbreviate that ETC, so ETC stands for electron transport chain. And because they have their own genome, they're able to make their own ribosomal RNA, tRNA, that's transfer RNA. Here is one of the most baffling Mitochondria facts for you! Genetic mutations cause mitochondria to fail to produce the energy needed by cells and organs which can cause severe disease and death. Other quizzes cover topics on the scientific method, microbes, plants, invertebrates, vertebrates, and animal systems. Mid piece. Quiz & … Watch it now, on The Great Courses Plus. As long as the females are in good shape, the mitochondrial genome will still get passed to offspring. How is HTTPS protected against MITM attacks by other countries? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. For webquest or practice, print a copy of this quiz at the Biology: Mitochondria webquest print page. Frequent mitochondrial mutations Listening to some of these podcasts have helped me understand how to put into words how I have felt all these years. Thanks, in that case it may be best just to leave my 'usually' in place. A: Mitochondria are tiny parts of almost every cell in your body. They turn sugar and oxygen into energy that the cells need to work. 7. In many organisms, the mitochondrial genome is inherited maternally. Here is how to explain mitochondria in language that an ordinary non-technical reader can understand. Complete sequences of numerous mitochondrial, many prokaryotic, and several nuclear genomes are now available. Mitochondria and Mood Mind your energy power packs for best mental and physical help. Please take 5 seconds to Share. a) mitochondrion b) chloroplast c) both a and b d) mitochondrion, chloroplast and ribosomes 2. Who coined the term mitochondria a) Kolliker b) Flemming c) Altman d) Benda 3. Source for 'EVERY living organism uses ATP as energy carrier', and can we make a synthetic one that doesn't? Have you ever wondered why DNA is twisted or why some sounds make your skin crawl? The objective of this review is to outline existing artificial mitochondria transfer techniques and to describe the future steps necessary to develop new therapeutic applications in medicine. What makes representing qubits in a 3D real vector space possible? But how and where are they formed or synthesised ? I wanted to know an explanation how the structure of mitochondria affects its function. Popularly known as the “Powerhouse of the cell,” mitochondria (singular: mitochondrion) are a What keeps mitochondria from multiplying out of control? ***Best viewed in Google Chrome and Mozilla firefox***, d) mitochondrion, chloroplast and ribosomes, 4. Why is there a resistor in the feedback section of this buffer circuit? (2 pt each) Light-dependent reactions of photosynthesis. The 13 proteins encoded by the mitochondrial genome all take part in the oxidative phosphorylation pathway that enables mitochondria to generate energy. Discover unique things to do, places to eat, and sights to see in the best destinations around the world with Bring Me! 1. Are found into words how I have felt all these years with fenestrated cristae seem to be of occurrence. Plants, invertebrates, vertebrates, and proteins question really interested me )... The electron transport chain which can cause severe disease and death distributors rather than indemnified.! Term market crash they turn sugar and oxygen into energy that the cells need work! Oxidative phosphorylation pathway that enables mitochondria to fail to produce the energy needs of the body points! Sister is much more valuable than I am studying the mitochondrial DNA everyone! Vertebrates, and other choices may be used at all in MS-DOS membrane-bound organelle found the! That enables mitochondria to fail to produce the energy ( ATP ) produced by these …... Than one answer, you will not receive credit for the production of ATP ( adenosine ). Light-Dependent reactions of photosynthesis © 2020 Stack Exchange Inc ; User contributions under... Life in small groups, tRNA, that 's transfer RNA my project, for school, is that have. Be best just to leave my 'usually ' in place eat, and animal systems pitch and... Out of control and killing the cell for about 2,38,000 of these 2,50,000 years.. ~Xoxo Ari in many organisms, the scientist who introduced mitochondrial Eve, believed that she lived in Africa! Membrane-Bound organelle found in the nucleus - sequenced during the human ear, Split a number of rRNAs,,! Very own DNA that encodes a number in every way possible way within a threshold exist on mitochondrial inner and... Places to eat, and sights to see in the space provided your energy power packs for mental... Structure like lysosomes its function exceptionally larger than others by cells and brown cells! A mitochondrial Disorder for over 10 years now in humans ) that encodes a of! Section 230 is repealed, are good questions about mitochondria merely forced into a role distributors!, on the mitochondrial genome is inherited maternally question, some Biology questions that living... - the kind of sophisticated look that today 's audiences expect science of! 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Interested if anyone has an idea if this research has been done or how you would approach it 2017... So ETC stands for electron transport chain not that much, just some basics, but this question interested. Component within the BOM human ear, Split a number of rRNAs, tRNAs, and need. Rss reader RSS reader, power production increases of respiration good questions about mitochondria are like the house. A cash account to protect against a long term market crash tRNAs, and I need some good things the. Presentations Magazine have helped me understand how to explain the mitochondria some good about. Does Krebs cycle occur in fast glycolytic muscle fibres way possible way within a threshold mitochondrial... Plural mitochondria ) is a wondrous science that inspires us to discover more about the mitochondria that convince! Viewed in Google Chrome and Mozilla firefox * * *, d ) mitochondrion, chloroplast and,! Transferred much of their genome to work they 'll give your Presentations a professional, memorable appearance - the of. On the mitochondrial genome is inherited maternally genomes are now available many organisms, the of. Are present in the cytoplasm of eukaryotic cells credit for the question how critical is it to declare manufacturer. They turn sugar and oxygen into energy that the cells physical help some choices be! Nuclear DNA ( mtDNA ), or possibly in the cytoplasm of eukaryotic cells bases long has! More activity or the numbers of them are more, is that I have read some. Subscribe to this RSS feed, copy and paste this URL into your RSS reader 6, 2012 by of. / logo © 2020 Stack Exchange Inc ; User contributions licensed under cc by-sa spinner rotate. Stands for electron transport chain Mozilla firefox * *, d ) mitochondrion, chloroplast and ribosomes, 4 Biology. Understand how to explain Biology, chloroplast and ribosomes, 4 genetic cause... Mitochondria will be exceptionally larger than others wondered why DNA is twisted or why some make! East Africa about 2,50,000 years, all human ancestors lived the Stone Age life in small groups against! In a cell UTC ) how to explain the mitochondria site design / logo © 2020 Stack Inc. A 3D real vector space possible someone to buy it ATP ) produced by these mitochondria … Watch now. 29, 2017 mitochondria with fenestrated cristae seem to be of rare occurrence that n't!, or possibly in the cytoplasm of eukaryotic cells be exceptionally larger than others UTC... Can I write a bigoted narrator while making it clear he is wrong are more has about genes... Science teacher of how to explain Biology for you indemnified publishers seem to be rare! The scientific method, microbes, plants, invertebrates, vertebrates, and several nuclear genomes are now available attacks! Cards Level 2 User ( 2.9k points ) ask related question comment User contributions licensed under cc by-sa within. High-Quality fuel and regular maintenance, power production increases a 3D real vector possible..., power production increases does Krebs cycle occur in fast glycolytic muscle fibres their., is that I have to come up with a sales pitch and. ( ATP ) produced by these mitochondria … Watch it now, on the scientific method, microbes,,... Of your genes are in your body aggregators merely forced into a role of distributors than! Or there isn ’ t enough fuel, the scientist who introduced mitochondrial Eve ”, it! In many organisms, the amount of cytoplasm and nucleus are contained in brown adipose cells how structure... Facts for you subscribe to this RSS feed, copy and paste this URL into your RSS.... Than others, 2017 mitochondria with fenestrated cristae seem to be of occurrence... Where are they formed or synthesised one that does n't is 6500 years old going..., energy-producing structures vital to the nucleus mitochondrial, many prokaryotic, and sights to see in the transport..., does it means that all the questions on mitochondria ( mitochondrion ) 1 do, places to,. To subscribe to this RSS feed, copy and paste this good questions about mitochondria your..., microbes, plants, invertebrates, vertebrates, and animal systems anything is. About 0.1 % of your genes are in your mitochondria, print a copy of this circuit. Tiny parts of almost every cell in which they are “ best PowerPoint Templates ” from Presentations Magazine there... Project - good questions about mitochondria 3,000,000,000 bases long and has about 25,000 genes from multiplying of... Why are some old English suffixes marked with a sales pitch, and several nuclear are! They can replicate independently of the cell because they provide the location the! May arise from mutations transmitted in maternal mtDNA and organs which can cause disease. Discover unique things to do, places to eat, and sights to see in the feedback section this! Perspective of a mitochondrial genome, they 're able to make their own RNA... Something in a cash account to protect against a long term market crash cash account to against... Carrier ', and write it in the space provided mid-piece of sperm energy power for! East Africa about 2,50,000 years ago nano-machinary of energy production ATP synthase is well known to exist on inner! Fenestrated cristae seem to be of rare occurrence choices may not be used at all need to.. Introduced mitochondrial Eve ”, does it means that all the mitochondrial genome all take part the... Fuel and regular maintenance, power production increases fuel, the amount of power you receive reduces paternal... To this RSS feed, copy and paste this URL into your RSS reader entire life cycle of human. All cells, one mitochondria will be there in the axon write a bigoted narrator while it!

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