Diversity Lab Pics
... water. Cilia are slender, microscopic, hair-like structures or organelles that extend from the surface of the paramecium; the cilia are used for movement of the paramecium. The oral groove is where food is ingested. Once the food is ingested, it is digested in the food vacuole and let out through th ...
... water. Cilia are slender, microscopic, hair-like structures or organelles that extend from the surface of the paramecium; the cilia are used for movement of the paramecium. The oral groove is where food is ingested. Once the food is ingested, it is digested in the food vacuole and let out through th ...
Cells
... features to help a cell carry out its functions. Cell membrane: Surrounds the cell and controls movement of substances in and out. Nucleus: Contains genetic material (DNA) which controls the cell's activities. Vacuole: Area in a cell that contains liquid, and can be used by plants to keep the cell r ...
... features to help a cell carry out its functions. Cell membrane: Surrounds the cell and controls movement of substances in and out. Nucleus: Contains genetic material (DNA) which controls the cell's activities. Vacuole: Area in a cell that contains liquid, and can be used by plants to keep the cell r ...
The basic unit of life is the CELL. This is the smallest entity that is
... bound tubules, the endoplasmic reticulum (ER). The membrane surrounding the ER, like all membranes, is composed of lipid and protein (little if any carbohydrate). The endoplasmic reticulum serves several functions within the cell. It is involved in protein synthesis, protein processing, protein modi ...
... bound tubules, the endoplasmic reticulum (ER). The membrane surrounding the ER, like all membranes, is composed of lipid and protein (little if any carbohydrate). The endoplasmic reticulum serves several functions within the cell. It is involved in protein synthesis, protein processing, protein modi ...
Cell Notes - Fort Bend ISD
... Usually larger and more complex than prokaryotes. May be unicellular like an amoeba or multicellular like a plant Contain dozens of specialized structures called organelles. Includes protists, fungi, plants and animals. ...
... Usually larger and more complex than prokaryotes. May be unicellular like an amoeba or multicellular like a plant Contain dozens of specialized structures called organelles. Includes protists, fungi, plants and animals. ...
1. Most viruses consist of genetic material and which of the following
... 6. Which cycle is demonstrated by a virus that has infected a host cell but is not being replicated? a) lysogenic cycle b) lytic cycle c) citric acid cycle d) cell cycle 7. Which illness is not caused by a virus? a) cholera b) flu c) HIV d) common cold 8. Which term applies to the specific type of v ...
... 6. Which cycle is demonstrated by a virus that has infected a host cell but is not being replicated? a) lysogenic cycle b) lytic cycle c) citric acid cycle d) cell cycle 7. Which illness is not caused by a virus? a) cholera b) flu c) HIV d) common cold 8. Which term applies to the specific type of v ...
Slide 1
... • Action potentials only initiated if threshold potential is reached • At synapse, the amount of neurotransmitter secreted following depolarization of the presynaptic membrane may not be enough to cause t.p. to be reached in post-synaptic membrane. • Depolarization does not take place. Returns to re ...
... • Action potentials only initiated if threshold potential is reached • At synapse, the amount of neurotransmitter secreted following depolarization of the presynaptic membrane may not be enough to cause t.p. to be reached in post-synaptic membrane. • Depolarization does not take place. Returns to re ...
MEMBRANE POTENTIAL AND NERVE IMPULSE TRANSMISSION
... allows Na+ to pass freely into the cells free flow of Na+ into the cell causes a reversal of membrane polarity polarity reversal is called the action potential ...
... allows Na+ to pass freely into the cells free flow of Na+ into the cell causes a reversal of membrane polarity polarity reversal is called the action potential ...
Powerpoint notes
... Discovery of the Cell Robert Hooke: 16651stperson to see a cell Used a microscope to look at a piece of cork ...
... Discovery of the Cell Robert Hooke: 16651stperson to see a cell Used a microscope to look at a piece of cork ...
Biology 223 - Dr. Stuart Sumida
... between the outside of the cell and the inside of the cell. • The charge difference is due to the differential distribution of charged ions on either side of the membrane. • The primary ions involved are potassium (K+) and sodium (Na+) ...
... between the outside of the cell and the inside of the cell. • The charge difference is due to the differential distribution of charged ions on either side of the membrane. • The primary ions involved are potassium (K+) and sodium (Na+) ...
5.1 How Is the Structure of the Cell Membrane Related to Its Function?
... Membranes are “fluid mosaics” in which proteins move within layers of lipids – The “fluid mosaic” model of a membrane was proposed in 1972 by S.J. Singer and G.L. Nicolson – This model indicates that each membrane consists of a mosaic, or “patchwork,” of different proteins that constantly shift an ...
... Membranes are “fluid mosaics” in which proteins move within layers of lipids – The “fluid mosaic” model of a membrane was proposed in 1972 by S.J. Singer and G.L. Nicolson – This model indicates that each membrane consists of a mosaic, or “patchwork,” of different proteins that constantly shift an ...
cells - Plain Local Schools
... III. The Endoplasmic Reticulum A. The endoplasmic reticulum is an extensive network of membranes which functions as the main manufacturing and transportation facility in the cell 1. Rough ER-The rough ER has ribosomes which insert proteins right into or through the ER membrane or packaged in vesicl ...
... III. The Endoplasmic Reticulum A. The endoplasmic reticulum is an extensive network of membranes which functions as the main manufacturing and transportation facility in the cell 1. Rough ER-The rough ER has ribosomes which insert proteins right into or through the ER membrane or packaged in vesicl ...
Notes on Mitosis
... No partner is required - think of vast oceans, or of organisms that are not mobile. How would they be able to reproduce? Exact copies of parent. ...
... No partner is required - think of vast oceans, or of organisms that are not mobile. How would they be able to reproduce? Exact copies of parent. ...
Bio07_TR_U03_CH07.QXD
... Smooth ER, which does not contain ribosomes, is involved in the making of lipids. The function of the Golgi apparatus is to modify, sort, and package proteins and other materials from the ER for storage in the cell or secretion outside the cell. Other organelles include lysosomes, vacuoles, mitochon ...
... Smooth ER, which does not contain ribosomes, is involved in the making of lipids. The function of the Golgi apparatus is to modify, sort, and package proteins and other materials from the ER for storage in the cell or secretion outside the cell. Other organelles include lysosomes, vacuoles, mitochon ...
RBC_memb
... Sphingomyelin and Phosphatidyl serine. Phospholipid molecules are characterized by a polar head group attached to a non-polar fatty acid tail. The polar head group is hydrophilic ( water loving), while the fatty acid tail is hydrophobic (water fearing). Thus the phospholipids in the cell membrane te ...
... Sphingomyelin and Phosphatidyl serine. Phospholipid molecules are characterized by a polar head group attached to a non-polar fatty acid tail. The polar head group is hydrophilic ( water loving), while the fatty acid tail is hydrophobic (water fearing). Thus the phospholipids in the cell membrane te ...
Nervous System
... Membrane is more permeable to K+ than Na+ so diffusion more likely. Na+ channels often closed. ...
... Membrane is more permeable to K+ than Na+ so diffusion more likely. Na+ channels often closed. ...
Chapter 7: Cells and Their Environment
... Cell Membrane cont. 3. Forms non-polar interior zone (middle layer) - Polar molecules (glucose, amino acids [AA], ions, cell wastes) can’t pass through b/c repelled by non-polar tails *** Advantage: Forms good barrier! - Problem: If cell membranes were made only of lipids, most substances could not ...
... Cell Membrane cont. 3. Forms non-polar interior zone (middle layer) - Polar molecules (glucose, amino acids [AA], ions, cell wastes) can’t pass through b/c repelled by non-polar tails *** Advantage: Forms good barrier! - Problem: If cell membranes were made only of lipids, most substances could not ...
Document
... The inner bacteria provided energy and the outer cell provided protection. This was a Symbiotic Relationship in which both bacteria benefited . Over time they became so dependent on each other that they could not live apart and developed into the first Eukaryotic Cells. ...
... The inner bacteria provided energy and the outer cell provided protection. This was a Symbiotic Relationship in which both bacteria benefited . Over time they became so dependent on each other that they could not live apart and developed into the first Eukaryotic Cells. ...
Cell Organelles - Ms. Poole`s Biology
... coded instructions for making proteins & other molecules for the cell • The nuclear envelope has nuclear pores, where things can enter or leave See? ...
... coded instructions for making proteins & other molecules for the cell • The nuclear envelope has nuclear pores, where things can enter or leave See? ...
Name - KS Blogs
... 1. Which drawing in Figure 7-5 contains a structure that carries out photosynthesis? What is this structure labeled in the diagram? 2. Look at Figure 7-5. Which structure in drawing I corresponds to structure M in drawing II? What is the name of this structure? 3. Which structure in drawing I of Fig ...
... 1. Which drawing in Figure 7-5 contains a structure that carries out photosynthesis? What is this structure labeled in the diagram? 2. Look at Figure 7-5. Which structure in drawing I corresponds to structure M in drawing II? What is the name of this structure? 3. Which structure in drawing I of Fig ...
Cells
... Reactions Most cells are tiny, in order to maintain a good surface area-tovolume ratio. The volume of a cell determines its metabolic activity relative to time. The surface area of a cell determines the number of substances that can enter or leave the cell. ...
... Reactions Most cells are tiny, in order to maintain a good surface area-tovolume ratio. The volume of a cell determines its metabolic activity relative to time. The surface area of a cell determines the number of substances that can enter or leave the cell. ...
Cell membrane
The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins. Cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton. Cell membranes can be artificially reassembled.