Mitochondria diagram class 9

Solution Mitochondrial Membranes: It consists two membranes called inner and outer membrane. Each membrane is 60-70 A thick. Outer mitochondrial membrane is smooth and freely permeable to most small molecules. It contains enzymes, proteins and lipids. It has porin molecules (proteins) which form channels for passage of molecules through it. Inner mitochondrial membrane is semi permeable membrane and regulates the passage of materials into and out of the mitochondria. It is rich in enzymes and carrier proteins. It consists of 80% proteins and lipids. Cristae: The inner mitochondrial membrane gives rise to finger like projections called cristae. These cristae increase the inner surface area (fold in inner membrane) of the mitochondria to hold variety of enzymes. Oxysomes: The inner mitochondrial membrane bear minute regularly spaced tennis racket shaped particles known as oxysomes ( F 1 particle). They involve in ATP synthesis. Mitochondrial matrix: It is a complex mixture of proteins and lipids. Matrix contains enzymes for Krebs cycle, mitochondrial ribosomes(70 S), tRNAs and mitochondrial DNA.

• Extra Questions • CBSE Notes • RD Sharma Solutions • RD Sharma Class 12 Solutions • RD Sharma Class 11 Solutions • RD Sharma Class 10 Solutions • RD Sharma Class 9 Solutions • RD Sharma Class 8 Solutions • RS Aggarwal Solutions • RS Aggarwal Solutions Class 10 • RS Aggarwal Solutions Class 9 • RS Aggarwal Solutions Class 8 • RS Aggarwal Solutions Class 7 • RS Aggarwal Solutions Class 6 • ML Aggarwal Solutions • ML Aggarwal Class 10 Solutions • ML Aggarwal Class 9 Solutions • ML Aggarwal Class 8 Solutions • ML Aggarwal Class 7 Solutions • ML Aggarwal Class 6 Solutions • English Grammar • Words with Letters • English Summaries • Unseen Passages • Power house of Cell-Mitochondria. • Suicide Bags of Cell-Lysosomes. More Resources • • • • • Question 2. State two important functions of the nucleus of a cell. (CCE 2011, 2013) Answer: • Genetic Information: Nucleus contains genetic information not only for the cell but also for the whole organism. • Control Centre: Nucleus functions as control centre for cell metabolism and cell activities. Question 3. Name two cell organelles that have their own genetic material/DNA and ribosomes. (CCE 2010, 2012, 2013) Answer: Mitochondria, Plastids. Question 4. Name the plastid which stores starch, oils and protein granules. (CCE 2011, 2012) Answer: Leucoplasts – amyloplast for starch, elaioplast for oil and aleuroplast for protein. Question 5. Name the cell organelle which is able to destroy a damaged old/ and worn out cell. (CCE 2011, 2012)...

1.6 Solved Question for you Who Discovered Mitochondria? It is an important part of a cell of living organisms. Mitochondria within eukaryotic cells that produce adenosine triphosphate i.e. ATP. ATP is the main energy molecule which a Due to this reason, we sometimes refer the mitochondrion as the powerhouse of the cell. Mitochondria are found in all the eukaryotes, which are all living things that are not bacteria. Now, we will see the functions of Mitochondria and also who discovered Mitochondria. Mitochondria Diagram Mitochondria produce ATP through the process of cellular respiration requires oxygen. The citric acid cycle i.e. Krebs cycle takes place in the mitochondria. This cycle involves the oxidation of pyruvate, which comes from glucose. Mitochondria are the powerhouses of the cell which is subcellular, cylindrical organelles in eukaryotes. They have the main impact on body metabolism in people with autism and additionally play a role in each individual’s wellbeing. Every living organism originates with a cell and there are a number of mitochondria in each cell. Mitochondria are organelles located in the cells of each organism. These organelles are a rod-like structure that exists in plants as well as in animal cells. They create almost 90% of the chemical energy which cells need in order to survive. They produce energy and chemicals as well which the body system requires for different purposes. It also recycles some of the wastes to save energy. History of Mitoch...

The energy generated by mitochondria is stored in the form of ATP-Adenosine-triphosphate molecule. Mitochondria is membranes. Structure 8(i) Mitochondria have an inner and outer membrane space between the two membranes. (ii) Porins are present in the outer membrane for movement of ions in and out of the mitochondria. (iii) The folds increase the surface area of the membrane. This increased surface area is important because the inner membrane holds the proteins involved in the electron transport chain. These folds are known as cristae. Reaction Operated in Mitochondria Oxidative Phosphorylation: It is the process or reaction that is operated inside mitochondria. It is also called election transport linked phosphorylation. It is a metabolic pathway where enzymes are used by the cells to oxidize nutrients and release the chemical energy of molecular oxygen which is used to produce ATP-adenosine triphosphate. In this reaction, electrons are transferred (donor to acceptors) Note: The process in which ATP is formed as a result of transfer of electrons from NADH to $[O_2]$ by series of electrons carriers. Protein gradients are an inter-convertible currency of free energy in biological systems.

1.4 Solved Question for You Nucleus Diagram The nucleus is a term that we often find in Biology. It is a special structure found in almost all cells. A nucleus diagram is very useful to properly understand it. It is not present in Nucleus Definition The nucleus is an organelle that is present in most Furthermore, in animal cells, it is the hardest and largest organelle. We can identify it easily with the help of light microscopy. Also, the average mammalian nucleus occupies around 10 per cent of the total volume. It is a membrane-bound organelle which contains genetic material. Nucleus Structure The nucleus is the command centre of a cell. This is because it contains the genetic material of the cell. Therefore, it consists of a number of structural elements which facilitate its functions. The nucleus of a cell has a spherical shape. A nucleus diagram is very useful for studying its structure. Its structure consists of the following important parts: The nuclear membrane- This is an aspect of the nucleus that differentiates eukaryotic cells from This forms the lipid bilayer nucleus envelope. Also, it contains nuclear pores. Nuclear pores are made up of proteins and through them, substances enter and exit the cell. Nucleoplasm- It is a type of protoplasm. Furthermore, it consists of enzymes, organic molecules, and dissolved salts. Moreover, it acts as a cushion to protect the nucleolus and chromosomes. Also, it helps maintain its shape. Nucleolus- This is the most important o...