LE - 3 - Cell Division - Mitosis
... Copying DNA A dividing cell duplicates its DNA creates 2 copies of all DNA separates the 2 copies to opposite ends of the cell splits into 2 daughter cells ...
... Copying DNA A dividing cell duplicates its DNA creates 2 copies of all DNA separates the 2 copies to opposite ends of the cell splits into 2 daughter cells ...
CELL PARTS Chapter 4 - local.brookings.k12.sd.us
... HYDROPHOBIC “tails” of phospholipids make molecules line up as out & LIPID ________________ with POLAR heads facing _______ BILAYER NON-POLAR tails facing ________ in MEMBRANE PROTEINS PERIPHERAL •____________________stick on inside or outside surface •____________________go part way or all the way ...
... HYDROPHOBIC “tails” of phospholipids make molecules line up as out & LIPID ________________ with POLAR heads facing _______ BILAYER NON-POLAR tails facing ________ in MEMBRANE PROTEINS PERIPHERAL •____________________stick on inside or outside surface •____________________go part way or all the way ...
Olivier THOUMINE Mechanical coupling between N
... actin/myosin cytoskeleton in neuronal motility To trigger cell motility, forces generated by the cytoskeleton must be transmitted physically to the external environment through transmembrane adhesion molecules. One model put forward twenty years ago to describe this process is the molecular clutch b ...
... actin/myosin cytoskeleton in neuronal motility To trigger cell motility, forces generated by the cytoskeleton must be transmitted physically to the external environment through transmembrane adhesion molecules. One model put forward twenty years ago to describe this process is the molecular clutch b ...
Functions of a Cell
... cells (e.g. plant or animal cells). The main difference between the two is a well-defined nucleus surrounded by a membranous nuclear envelope that is present in only eukaryotic cells. Both types of cells share many common features. The genetic information is stored in genes. Proteins serve as the ma ...
... cells (e.g. plant or animal cells). The main difference between the two is a well-defined nucleus surrounded by a membranous nuclear envelope that is present in only eukaryotic cells. Both types of cells share many common features. The genetic information is stored in genes. Proteins serve as the ma ...
Section 7.3 Cell Transport
... Move molecules, (that cannot diffuse easily), down their concentration gradient Move into or out of cell Examples: Glucose, Amino Acids, Ions, ...
... Move molecules, (that cannot diffuse easily), down their concentration gradient Move into or out of cell Examples: Glucose, Amino Acids, Ions, ...
The Cell Cycle
... processes, including responding to the environment, getting rid of waste, growing, and reproducing, within one cell. • A unicellular organism made of one prokaryotic cell is called a ...
... processes, including responding to the environment, getting rid of waste, growing, and reproducing, within one cell. • A unicellular organism made of one prokaryotic cell is called a ...
Notes Cell membrane and its Environment
... ACTIVE TRANSPORT Active transport – is the movement of any substance across a cell membrane with the use of chemical energy. Materials will cross the cell membrane by either passive or active transport, depending on the size and chemical makeup of the material. The structure of the cell membrane als ...
... ACTIVE TRANSPORT Active transport – is the movement of any substance across a cell membrane with the use of chemical energy. Materials will cross the cell membrane by either passive or active transport, depending on the size and chemical makeup of the material. The structure of the cell membrane als ...
Active Transport
... concentration is equal everywhere. So when something moves against its concentration gradient, it is being forced from an area where it is less concentrated into a place where it is more concentrated. Conversely, when something moves down its concentration gradient, it is going from a place where it ...
... concentration is equal everywhere. So when something moves against its concentration gradient, it is being forced from an area where it is less concentrated into a place where it is more concentrated. Conversely, when something moves down its concentration gradient, it is going from a place where it ...
(not through inheritance). What is the origin of vacuole?
... pump out the H+ produced in the cytoplasm that has a rather stable pH around 7. The vacuole pH can be as acidic as 4-5. c) Osmotic regulation—arguably the most important function for most of plant cells Turgor pressure---due to the osmotic gradient between outside and inside of the cell and the limi ...
... pump out the H+ produced in the cytoplasm that has a rather stable pH around 7. The vacuole pH can be as acidic as 4-5. c) Osmotic regulation—arguably the most important function for most of plant cells Turgor pressure---due to the osmotic gradient between outside and inside of the cell and the limi ...
Brain stem - Wikispaces
... External structure of the medulla Most inferior region of the brain stem. Becomes the spinal cord at the level of the foramen magnum. Medulla is broad above: joins with pons & narrow below: continuous with spinal cord Length is about 3cm, width is about 2cm ...
... External structure of the medulla Most inferior region of the brain stem. Becomes the spinal cord at the level of the foramen magnum. Medulla is broad above: joins with pons & narrow below: continuous with spinal cord Length is about 3cm, width is about 2cm ...
Title: Using context to decipher a poem
... 1. Focus question/ Anticipatory set: What makes bread rise? It’s the same thing that is used to make beer and the bubbles in beer. Yeast is a single cell living organism. Like other living cells, yeast has many functions going on all the time that work together, much like a factory. 2. Building on t ...
... 1. Focus question/ Anticipatory set: What makes bread rise? It’s the same thing that is used to make beer and the bubbles in beer. Yeast is a single cell living organism. Like other living cells, yeast has many functions going on all the time that work together, much like a factory. 2. Building on t ...
Membranes Dr. Imrana Ehsan
... Lipids ◦ Remember lipids have hydrophilic head and hydrophobic tails ◦ To avoid the hydrophobic tails coming in contact with water a continuous bilayer sphere is formed. ◦ Therefore hydrophobic interactions hold membranes together ...
... Lipids ◦ Remember lipids have hydrophilic head and hydrophobic tails ◦ To avoid the hydrophobic tails coming in contact with water a continuous bilayer sphere is formed. ◦ Therefore hydrophobic interactions hold membranes together ...
2. ______ Active Transport uses the energy
... glucose, amino acids) and ____ (e.g.: Na+, Cl-, K+, Ca2+) down their conc. gradient across a membrane via specific protein _________ and _________ proteins. No ATP required. F. ____________-mediated transport exhibits specificity, competition, and saturation 1. _________ – carriers, such as GLUT tra ...
... glucose, amino acids) and ____ (e.g.: Na+, Cl-, K+, Ca2+) down their conc. gradient across a membrane via specific protein _________ and _________ proteins. No ATP required. F. ____________-mediated transport exhibits specificity, competition, and saturation 1. _________ – carriers, such as GLUT tra ...
The Cell Membrane - Roderick Biology
... • The membrane of the cell has many different names. You may hear it called: ...
... • The membrane of the cell has many different names. You may hear it called: ...
Cells Alive * Internet Lesson Use this website to
... 3. What is a centriole? ________________________ 4. The Golgi is a ________ ________ structure with a single membrane. 5. The Golgi is important for _______ macromolecules for ____________. 6. What is found in lysosomes in animal cells and what do they do to bacteria? _______________ 7. What is a ce ...
... 3. What is a centriole? ________________________ 4. The Golgi is a ________ ________ structure with a single membrane. 5. The Golgi is important for _______ macromolecules for ____________. 6. What is found in lysosomes in animal cells and what do they do to bacteria? _______________ 7. What is a ce ...
Ch. 3 Cells Power Point
... – transport through the plasma membrane likely occurs through these globular proteins (Fluid mosaic model) – According to the fluid-mosaic model of the cell membrane, special proteins called membrane proteins float in the phospholipid bilayer like icebergs in a sea. – The sea of phospholipid molecul ...
... – transport through the plasma membrane likely occurs through these globular proteins (Fluid mosaic model) – According to the fluid-mosaic model of the cell membrane, special proteins called membrane proteins float in the phospholipid bilayer like icebergs in a sea. – The sea of phospholipid molecul ...
Document
... 2. In E. coli, transcription initiation is controlled primarily by alternative factors and by a large variety of other sequence-specific DNA-binding proteins. 3. G=RTlnKD. This means that a net increase of 1.4 kcal/mole (the approximate contribution of an additional hydrogen bond) increases bindi ...
... 2. In E. coli, transcription initiation is controlled primarily by alternative factors and by a large variety of other sequence-specific DNA-binding proteins. 3. G=RTlnKD. This means that a net increase of 1.4 kcal/mole (the approximate contribution of an additional hydrogen bond) increases bindi ...
Cell membrane
... The mechanism of Gram staining During the procedure the bacteria are first stained with crystal violet and next treated with iodine to promote dye retention. When gram-positive bacteria then are decolorized with ethanol, the alcohol is thought to shrink the pores of the thick peptidoglycan. Thus th ...
... The mechanism of Gram staining During the procedure the bacteria are first stained with crystal violet and next treated with iodine to promote dye retention. When gram-positive bacteria then are decolorized with ethanol, the alcohol is thought to shrink the pores of the thick peptidoglycan. Thus th ...
Membrane structure, I
... What is osmosis? WATER The movement of ___________ across the cell membrane. Is it the movement of any other substance? NO!!!! ...
... What is osmosis? WATER The movement of ___________ across the cell membrane. Is it the movement of any other substance? NO!!!! ...
3 Cell Boundaries powerpoint
... – Channels are specific to certain molecules – 100 different protein channels ...
... – Channels are specific to certain molecules – 100 different protein channels ...
cells and transport GOOD lect07
... Active transport requires chemical energy and usually a carrier protein. Exocytosis and endocytosis transport macromolecules across plasma membranes using vesicle formation, ...
... Active transport requires chemical energy and usually a carrier protein. Exocytosis and endocytosis transport macromolecules across plasma membranes using vesicle formation, ...
Cell Structure and Function
... Membranes rich in unsaturated fatty acids are more fluid than those rich in saturated fatty acids Membranes must be fluid to work properly; they are usually about as fluid as salad oil The steroid cholesterol has different effects on membrane fluidity ...
... Membranes rich in unsaturated fatty acids are more fluid than those rich in saturated fatty acids Membranes must be fluid to work properly; they are usually about as fluid as salad oil The steroid cholesterol has different effects on membrane fluidity ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.