Document
... • Water can pass through plasma membrane in 2 ways: – through lipid bilayer by simple diffusion – through aquaporins (integral membrane proteins) ...
... • Water can pass through plasma membrane in 2 ways: – through lipid bilayer by simple diffusion – through aquaporins (integral membrane proteins) ...
What does a cell need?
... solutes, permeability of cell membranes is selective and regulated. • Permeability determined by transporter proteins. – Channels and carriers are solute specific – If no transporter, than that solute cannot cross membrane ...
... solutes, permeability of cell membranes is selective and regulated. • Permeability determined by transporter proteins. – Channels and carriers are solute specific – If no transporter, than that solute cannot cross membrane ...
Plama Membrane
... Think of the phospholipids in the bilayer as creating a “sea” where other molecules can float on top, like a barrel of apples floating on top of the water. ...
... Think of the phospholipids in the bilayer as creating a “sea” where other molecules can float on top, like a barrel of apples floating on top of the water. ...
Membranes
... Two hydrophobic hydrocarbon tails (not attracted to water, but attracted to each other) ...
... Two hydrophobic hydrocarbon tails (not attracted to water, but attracted to each other) ...
Ch7-2CellStructure - Saint Joseph High School
... • Made up of dozens of proteins and RNA • Cells make proteins on ribosomes • Some are suspended in the cytosol. These are “free” ribosomes. “Free” ribosomes make proteins that remain in the cell. • Proteins that leave the cell are made on ribosomes on the surface of the ...
... • Made up of dozens of proteins and RNA • Cells make proteins on ribosomes • Some are suspended in the cytosol. These are “free” ribosomes. “Free” ribosomes make proteins that remain in the cell. • Proteins that leave the cell are made on ribosomes on the surface of the ...
L4_Cell Communication_Fa08
... – Conversion of signal to a form that can bring about a cellular response – May be several steps with intermediaries: signal transduction pathway • relay molecules ...
... – Conversion of signal to a form that can bring about a cellular response – May be several steps with intermediaries: signal transduction pathway • relay molecules ...
Chapter 5: Cell Membrane Structure and Function What Drives the
... Diffusion: Movement of molecules from an area of [high] to an area of [low] Rate depends on: 1) Molecule size 2) Concentration gradient 3) Lipid solubility • Greater the concentration gradient, the faster diffusion occurs • Diffusion will continue until gradient eliminated (dynamic equilibrium) • Di ...
... Diffusion: Movement of molecules from an area of [high] to an area of [low] Rate depends on: 1) Molecule size 2) Concentration gradient 3) Lipid solubility • Greater the concentration gradient, the faster diffusion occurs • Diffusion will continue until gradient eliminated (dynamic equilibrium) • Di ...
CELL (Introduction)
... Act as cytoskeleton providing rigid physical structure for certain parts of cell e.g. Actin in ectoplasm. Contractile machine in muscle cells. Microtubules in cilium. Centriole and mitotic spindle. ...
... Act as cytoskeleton providing rigid physical structure for certain parts of cell e.g. Actin in ectoplasm. Contractile machine in muscle cells. Microtubules in cilium. Centriole and mitotic spindle. ...
AP Biology - gwbiology
... transport of another against its own concentration gradient. Contransport is an advantage in living systems because basically it is getting two processes done for the energy cost of one. The process that requires ATP forces the transport of other materials, allowing the cell to be as productive and ...
... transport of another against its own concentration gradient. Contransport is an advantage in living systems because basically it is getting two processes done for the energy cost of one. The process that requires ATP forces the transport of other materials, allowing the cell to be as productive and ...
Cell Organelles
... simple diffusion facilitated diffusion This is a: Channel protein special one for water called an: aquaporin ...
... simple diffusion facilitated diffusion This is a: Channel protein special one for water called an: aquaporin ...
Moving Cellular Material Chapter 2 Lesson 3
... • Carrier proteins are transport proteins that carry large molecules through the cell membrane. • Channel proteins are transport proteins that form pores through the cell membrane. ...
... • Carrier proteins are transport proteins that carry large molecules through the cell membrane. • Channel proteins are transport proteins that form pores through the cell membrane. ...
The Cell Membrane
... Phagocytosis: The intake of a large droplet of extracellular fluid. This occurs in specialized cells. Receptor-assisted endocytosis: The intake of specific molecules that attach to special proteins in the cell membrane. These proteins are uniquely shaped to fit the shape of a specific molecule. ...
... Phagocytosis: The intake of a large droplet of extracellular fluid. This occurs in specialized cells. Receptor-assisted endocytosis: The intake of specific molecules that attach to special proteins in the cell membrane. These proteins are uniquely shaped to fit the shape of a specific molecule. ...
Cellular Transport WebQuest
... 4. An isotonic solution has the _____________ concentration of _______________ as another solution like the cytoplasm of the cell. Which way does the water move? ________________________________ What happens to a cell when it is placed in an isotonic solution? _____________ What does iso mean?______ ...
... 4. An isotonic solution has the _____________ concentration of _______________ as another solution like the cytoplasm of the cell. Which way does the water move? ________________________________ What happens to a cell when it is placed in an isotonic solution? _____________ What does iso mean?______ ...
Chapter 12 - FIU Faculty Websites
... can be decorated with carbohydrates. 3.Membrane lipids are small amphipathic molecules that form closed bimolecular sheets that prevent the movement of polar or charged molecules. 4.Proteins serve to mitigate the impermeability of membranes and allow movement of molecules and information across the ...
... can be decorated with carbohydrates. 3.Membrane lipids are small amphipathic molecules that form closed bimolecular sheets that prevent the movement of polar or charged molecules. 4.Proteins serve to mitigate the impermeability of membranes and allow movement of molecules and information across the ...
Slide 1
... FIGURE 2-1: Overview of plasma membrane structure. Plasma membranes are distinguishable from other cellular membranes by the presence of both glycolipids and glycoproteins on their outer surfaces and the attachment of cytoskeletal proteins to their cytoplasmic surfaces. Interrelations among typical ...
... FIGURE 2-1: Overview of plasma membrane structure. Plasma membranes are distinguishable from other cellular membranes by the presence of both glycolipids and glycoproteins on their outer surfaces and the attachment of cytoskeletal proteins to their cytoplasmic surfaces. Interrelations among typical ...
Cellular Transport WebQuest
... 4. An isotonic solution has the _____________ concentration of _______________ as another solution like the cytoplasm of the cell. Which way does the water move? ________________________________ What happens to a cell when it is placed in an isotonic solution? _____________ What does iso mean?______ ...
... 4. An isotonic solution has the _____________ concentration of _______________ as another solution like the cytoplasm of the cell. Which way does the water move? ________________________________ What happens to a cell when it is placed in an isotonic solution? _____________ What does iso mean?______ ...
The Cell Membrane
... slide past each other. This makes the cell membrane act like oil on the surface of water. The proteins that stud the membrane ...
... slide past each other. This makes the cell membrane act like oil on the surface of water. The proteins that stud the membrane ...
Exam I Mock Exam
... 36. (True/ False) Hydrophobic (lipid soluble) substances pass slowly through the cellular membrane because of the hydrophilic heads of the phospholipids’ bilayer. 37. (True/ False) Facilitated diffusion means passive transport aided by proteins and energy (more specifically referred to as ATP). 38. ...
... 36. (True/ False) Hydrophobic (lipid soluble) substances pass slowly through the cellular membrane because of the hydrophilic heads of the phospholipids’ bilayer. 37. (True/ False) Facilitated diffusion means passive transport aided by proteins and energy (more specifically referred to as ATP). 38. ...
cell
... Basic reaction of stains = attraction of opposites: a) Structures that stain with a basic stain = BASOPHILIC (stain acid component - Nuclei or RER in secretory cells) b) Structures that stain with an acidic stain = ACIDOPHILIC (stain basic component “Normal” cytoplasm) ...
... Basic reaction of stains = attraction of opposites: a) Structures that stain with a basic stain = BASOPHILIC (stain acid component - Nuclei or RER in secretory cells) b) Structures that stain with an acidic stain = ACIDOPHILIC (stain basic component “Normal” cytoplasm) ...
Fatty acids as gatekeepers of immune cell regulation - Direct-MS
... Lipid rafts are dynamic microenvironments in the exoplasmic leaflets of the phospholipid bilayer of plasma membranes. They are rich in saturated fatty acids, sphingolipids, cholesterol and glycosylphosphatidylinositolanchored (GPI) proteins [2 – 5]. Rafts serve as platforms to facilitate apical sort ...
... Lipid rafts are dynamic microenvironments in the exoplasmic leaflets of the phospholipid bilayer of plasma membranes. They are rich in saturated fatty acids, sphingolipids, cholesterol and glycosylphosphatidylinositolanchored (GPI) proteins [2 – 5]. Rafts serve as platforms to facilitate apical sort ...
Cell Membranes: Chapt. 6 - College Heights Secondary
... • Allows for absorption of H2O by the large intestine • Retention or shedding of H2O by kidneys • Uptake of H2O by the blood affects our blood pressure • Increased blood pressure creates a greater risk of heart attack and ...
... • Allows for absorption of H2O by the large intestine • Retention or shedding of H2O by kidneys • Uptake of H2O by the blood affects our blood pressure • Increased blood pressure creates a greater risk of heart attack and ...
Lecture: 10-14-16
... Another prominent class of membrane pumps is the ABC transporters, so named because they all contain a domain that binds ATP, called the ATP‐binding cassette. Members of this class include the multidrug resistance protein (MDR), which pumps drugs out of a cell, and the cystic fibrosis transmemb ...
... Another prominent class of membrane pumps is the ABC transporters, so named because they all contain a domain that binds ATP, called the ATP‐binding cassette. Members of this class include the multidrug resistance protein (MDR), which pumps drugs out of a cell, and the cystic fibrosis transmemb ...
Lipid raft
The plasma membranes of cells contain combinations of glycosphingolipids and protein receptors organized in glycolipoprotein microdomains termed lipid rafts. These specialized membrane microdomains compartmentalize cellular processes by serving as organizing centers for the assembly of signaling molecules, influencing membrane fluidity and membrane protein trafficking, and regulating neurotransmission and receptor trafficking. Lipid rafts are more ordered and tightly packed than the surrounding bilayer, but float freely in the membrane bilayer. Although more common in plasma membrane, lipid rafts have also been reported in other parts of the cell, such as Golgi and lysosomes.