Cellsppt presentation-100813001954-phpapp02
- 4. 1. nuclear body eukaryotic cell a. The nuclear body is bounded by a nuclear membrane having pores connecting it with the endoplasmic reticulum b. It contains one or more paired, linear chromosomes composed of deoxyribonucleic acid (DNA) associated with histone proteins. c. A nucleolus is present. d. The nuclear body is called a nucleus. prokaryotic cell a. The nuclear body is not bounded by a nuclear membrane. b. It usually contains one circular chromosome composed of deoxyribonucleic acid (DNA) associated with histone-like proteins. c. There is no nucleolus. d. The nuclear body is called a nucleoid .
- 5. 2.) cell division eukaryotic cell a. The nucleus divides by mitosis. b. Haploid (1N) sex cells in diploid or 2N organisms are produced through meiosis prokaryotic cell a. The cell usually divides by binary fission. There is no mitosis. b. Prokaryotic cells are haploid Meiosis is not needed.
- 6. Animal Cell
- 7. Animal Cell
- 8. The following is a glossary of animal cell terms: cell membrane - the thin layer of protein and fat that surrounds the cell. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others. centrosome - (also called the "microtubule organizing center") a small body located near the nucleus - it has a dense center and radiating tubules. The centrosomes is where microtubules are made. During cell division (mitosis), the centrosome divides and the two parts move to opposite sides of the dividing cell. The centriole is the dense center of the centrosome. cytoplasm - the jellylike material outside the cell nucleus in which the organelles are located. Golgi body - (also called the Golgi apparatus or golgi complex) a flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus. It produces the membranes that surround the lysosomes. The Golgi body packages proteins and carbohydrates into membrane-bound vesicles for "export" from the cell. lysosome - (also called cell vesicles) round organelles surrounded by a membrane and containing digestive enzymes. This is where the digestion of cell nutrients takes place. mitochondrion - spherical to rod-shaped organelles with a double membrane. The inner membrane is infolded many times, forming a series of projections (called cristae). The mitochondrion converts the energy stored in glucose into ATP (adenosine triphosphate) for the cell. nuclear membrane - the membrane that surrounds the nucleus. nucleolus - an organelle within the nucleus - it is where ribosomal RNA is produced. Some cells have more than one nucleolus. nucleus - spherical body containing many organelles, including the nucleolus. The nucleus controls many of the functions of the cell (by controlling protein synthesis) and contains DNA (in chromosomes). The nucleus is surrounded by the nuclear membrane. ribosome - small organelles composed of RNA-rich cytoplasmic granules that are sites of protein synthesis. rough endoplasmic reticulum - (rough ER) a vast system of interconnected, membranous, infolded and convoluted sacks that are located in the cell's cytoplasm (the ER is continuous with the outer nuclear membrane). Rough ER is covered with ribosomes that give it a rough appearance. Rough ER transports materials through the cell and produces proteins in sacks called cisternae (which are sent to the Golgi body, or inserted into the cell membrane). smooth endoplasmic reticulum - (smooth ER) a vast system of interconnected, membranous, infolded and convoluted tubes that are located in the cell's cytoplasm (the ER is continuous with the outer nuclear membrane). The space within the ER is called the ER lumen. Smooth ER transports materials through the cell. It contains enzymes and produces and digests lipids (fats) and membrane proteins; smooth ER buds off from rough ER, moving the newly- made proteins and lipids to the Golgi body, lysosomes, and membranes. vacuole - fluid-filled, membrane-surrounded cavities inside a cell. The vacuole fills with food being digested and waste material that is on its way out of the cell.
- 9. The following is a glossary of plant cell anatomy terms. amyloplast - an organelle in some plant cells that stores starch. Amyloplasts are found in starchy plants like tubers and fruits. ATP - ATP is short for adenosine triphosphate; it is a high-energy molecule used for energy storage by organisms. In plant cells, ATP is produced in the cristae of mitochondria and chloroplasts. cell membrane - the thin layer of protein and fat that surrounds the cell, but is inside the cell wall. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others. cell wall - a thick, rigid membrane that surrounds a plant cell. This layer of cellulose fiber gives the cell most of its support and structure. The cell wall also bonds with other cell walls to form the structure of the plant. centrosome - (also called the "microtubule organizing center") a small body located near the nucleus - it has a dense center and radiating tubules. The centrosomes is where microtubules are made. During cell division (mitosis), the centrosome divides and the two parts move to opposite sides of the dividing cell. Unlike the centrosomes in animal cells, plant cell centrosomes do not have centrioles. chlorophyll - chlorophyll is a molecule that can use light energy from sunlight to turn water and carbon dioxide gas into sugar and oxygen (this process is called photosynthesis). Chlorophyll is magnesium based and is usually green. chloroplast - an elongated or disc-shaped organelle containing chlorophyll. Photosynthesis (in which energy from sunlight is converted into chemical energy - food) takes place in the chloroplasts. christae - (singular crista) the multiply-folded inner membrane of a cell's mitochondrion that are finger-like projections. The walls of the cristae are the site of the cell's energy production (it is where ATP is generated). cytoplasm - the jellylike material outside the cell nucleus in which the organelles are located. Golgi body - (also called the golgi apparatus or golgi complex) a flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus. The golgi body packages proteins and carbohydrates into membrane-bound vesicles for "export" from the cell. granum - (plural grana) A stack of thylakoid disks within the chloroplast is called a granum. mitochondrion - spherical to rod-shaped organelles with a double membrane. The inner membrane is infolded many times, forming a series of projections (called cristae). The mitochondrion converts the energy stored in glucose into ATP (adenosine triphosphate) for the cell. nuclear membrane - the membrane that surrounds the nucleus. nucleolus - an organelle within the nucleus - it is where ribosomal RNA is produced. nucleus - spherical body containing many organelles, including the nucleolus. The nucleus controls many of the functions of the cell (by controlling protein synthesis) and contains DNA (in chromosomes). The nucleus is surrounded by the nuclear membrane photosynthesis - a process in which plants convert sunlight, water, and carbon dioxide into food energy (sugars and starches), oxygen and water. Chlorophyll or closely-related pigments (substances that color the plant) are essential to the photosynthetic process. ribosome - small organelles composed of RNA-rich cytoplasmic granules that are sites of protein synthesis. rough endoplasmic reticulum - (rough ER) a vast system of interconnected, membranous, infolded and convoluted sacks that are located in the cell's cytoplasm (the ER is continuous with the outer nuclear membrane). Rough ER is covered with ribosomes that give it a rough appearance. Rough ER transport materials through the cell and produces proteins in sacks called cisternae (which are sent to the Golgi body, or inserted into the cell membrane). smooth endoplasmic reticulum - (smooth ER) a vast system of interconnected, membranous, infolded and convoluted tubes that are located in the cell's cytoplasm (the ER is continuous with the outer nuclear membrane). The space within the ER is called the ER lumen. Smooth ER transport materials through the cell. It contains enzymes and produces and digests lipids (fats) and membrane proteins; smooth ER buds off from rough ER, moving the newly-made proteins and lipids to the Golgi body and membranes stroma - part of the chloroplasts in plant cells, located within the inner membrane of chloroplasts, between the grana. thylakoid disk - thylakoid disks are disk-shaped membrane structures in chloroplasts that contain chlorophyll. Chloroplasts are made up of stacks of thylakoid disks; a stack of thylakoid disks is called a granum. Photosynthesis (the production of ATP molecules from sunlight) takes place on thylakoid disks. vacuole - a large, membrane-bound space within a plant cell that is filled with fluid. Most plant cells have a single vacuole that takes up much of the cell. It Plant Cell helps maintain the shape of the cell.
- 10. Plant Cell
- 11. Plant Cell
- 12. Differences Between Plant and Animal Cell Animal Cell Plant Cell Nucleus: Present Present Mitochondria: Present Present Cytoplasm: Present Present Plant cells have chloroplasts because Chloroplast: Animal cells don't have chloroplasts they make their own food Golgi Apparatus: Present Present Cell wall: None Yes Plasma Membrane: only cell membrane cell wall and a cell membrane Microtubules/ Microfilaments: Present Present Lysosomes: Lysosomes occur in cytoplasm. Lysosomes usually not evident. Flagella: May be found in some cells May be found in some cells Ribosomes: Present Present Endoplasmic Reticulum Present Present (Smooth and Rough): Plastids: No Yes One or more small vacuoles (much One, large central vacuole taking up Vacuole: smaller than plant cells). 90% of cell volume. Centrioles: Present in all animal cells Only present in lower plant forms. Shape: Round (irregular shape) Rectangular (fixed shape) Cilia: Present It is very Rare
- 13. 3 Basic Parts of a Cell
- 15. the outermost boundary of animal cells. It is directly in contact with the environment. Cell membrane or plasma membrane
- 16. Cytoplasm it covers the largest area within the cell and consists of a semi fluid portion, the cytosol. It is the part outside the nucleus.
- 17. usually found suspended in the cytoplasm at the center of the cell. It is the control center of the cell. Nucleoplasm- the semi fluid material of the nucleus Nucleus
- 18. Other Parts of the Cells
- 19. Nucleus Large Oval body near the centre of the cell. The control centre for all activity. Surrounded by a nuclear membrane.
- 20. Nucleoplasm is the protoplasm in the nucleus. contains genetic material ---> CHROMOSOMES (DNA)
- 21. Nucleolus is found in the nucleus. contains more genetic information (RNA)
- 22. Cell Membrane the outer boundary of the cell. it separates the cell from other cells. it is porous ---> allows molecules to pass through.
- 23. Cell Wall ( Plant Cells Only ) non living structure that surrounds the plant cell. protects + supports the cell. made up of a tough fiber called cellulose.
- 24. Cytoplasm cell material outside the nucleus but within the cell membrane. clear thick fluid. contains structures called organelles.
- 25. Mitochondria power house of the cell. centre of respiration of the cell. they release energy for cell functions
- 26. Mitochondria
- 27. Vacuoles are clear fluid sacs that act as storage areas for food, minerals, and waste. in plant cell the vacuoles are large and mostly filled with water. This gives the plant support. in animal cells the vacuoles are much smaller.
- 28. Vacuoles
- 29. Chloroplasts Plant cells only ) contains a green pigment known as chlorophyll which is important for photosynthesis.
- 30. Chloroplasts
- 31. Ribosomes tiny spherical bodies that help make proteins. found in the cyto plasm or attached to the endo plasmic reticulum.
- 33. Endo Plasmic Reticulum ( ER ) systems of membranes throughout the cytoplasm. it connects the nuclear membrane to the cell membrane. passageway for material moving though the cell.
- 35. Golgi Bodies tube like structures that have tiny sacs at their ends. they help package protein.
- 37. Lysosomes " suicide sacs “ small structures that contain enzymes which are used in digestion. if a lysosome were to burst it could destroy the cell