EXERCISE 6 Osmosis and Diffusion
... Water is an essential requirement of all cells. For example, a plant that is not watered enough starts to wilt. In terms of osmosis and diffusion, there is not enough water within the cells for them to retain their shape and strength, so the plant starts to die. This is just one example of the impor ...
... Water is an essential requirement of all cells. For example, a plant that is not watered enough starts to wilt. In terms of osmosis and diffusion, there is not enough water within the cells for them to retain their shape and strength, so the plant starts to die. This is just one example of the impor ...
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... (anaphase I). The parent cell starts to divide into two daughter cells, each with one full set of double-stranded chromosomes (telophase I) 13. Explain what happens in each of the steps of meiosis I: a. Prophase- homologous chromosomes pair up and may do crossing over b. Metaphase- homologous pairs ...
... (anaphase I). The parent cell starts to divide into two daughter cells, each with one full set of double-stranded chromosomes (telophase I) 13. Explain what happens in each of the steps of meiosis I: a. Prophase- homologous chromosomes pair up and may do crossing over b. Metaphase- homologous pairs ...
New type of drug-resistant isogenic cell model created by
... associated with BRAF resistance. However, due to the genetic heterogeneity commonly observed in tumors, it is unclear if those secondary mutations already existed within low percentage subclones, or if they were acquired through drug treatment. Further, it has yet to be determined whether such genet ...
... associated with BRAF resistance. However, due to the genetic heterogeneity commonly observed in tumors, it is unclear if those secondary mutations already existed within low percentage subclones, or if they were acquired through drug treatment. Further, it has yet to be determined whether such genet ...
The Plant Extracellular Matrix: News from the Cell`s Frontier
... Glc is taken up into the lumen of the Golgi by an antiport mechanism coupled to the export of UMP. Inosine diphosphatase, a common marker for the Golgi apparatus, actually functions as a UDPase, converting the UDP that is produced by transfer of the sugar moiety from UDPGIc to polysaccharide, to UMP ...
... Glc is taken up into the lumen of the Golgi by an antiport mechanism coupled to the export of UMP. Inosine diphosphatase, a common marker for the Golgi apparatus, actually functions as a UDPase, converting the UDP that is produced by transfer of the sugar moiety from UDPGIc to polysaccharide, to UMP ...
Molecular Motors
... • 7-residue, 28-residue and 196-residue repeats are responsible for the organization of thick filaments • Residues 1 and 4 (a and d) of the sevenresidue repeat are hydrophobic; residues 2,3 and 6 (b, c and f) are ionic • This repeating pattern favors formation of coiled coil of tails. (with 3.6 - NO ...
... • 7-residue, 28-residue and 196-residue repeats are responsible for the organization of thick filaments • Residues 1 and 4 (a and d) of the sevenresidue repeat are hydrophobic; residues 2,3 and 6 (b, c and f) are ionic • This repeating pattern favors formation of coiled coil of tails. (with 3.6 - NO ...
LIFEPAC® 10th Grade Science Unit 8 Worktext - HomeSchool
... using gametes has a different genetic composition than either parent. Each individual obtains its genetic information from both parents, but the combination of traits the new individual has is different from that of either parent. Recall that there are two divisions in meiosis. The chromosomes of a ...
... using gametes has a different genetic composition than either parent. Each individual obtains its genetic information from both parents, but the combination of traits the new individual has is different from that of either parent. Recall that there are two divisions in meiosis. The chromosomes of a ...
Chapter 15
... Pathogenic Properties of Fungi • Fungal waste products may cause symptoms. • Chronic infections provoke an allergic response. • Tichothecene toxins inhibit protein synthesis. ...
... Pathogenic Properties of Fungi • Fungal waste products may cause symptoms. • Chronic infections provoke an allergic response. • Tichothecene toxins inhibit protein synthesis. ...
Membrane Transport
... A phagocytic cell comes in contact with the foreign object and sends pseudopodia (cytoplasmic extensions) around it. ...
... A phagocytic cell comes in contact with the foreign object and sends pseudopodia (cytoplasmic extensions) around it. ...
FACULTY OF MEDICINE DEPARTMENT OF PATHOLOGY Dr
... B. Apoptosis is programmed cell death and is based on activation of specific “death pathway genes.” Apoptosis may be physiologic or pathologic. The control of apoptosis is important in the process of carcinogenesis as some genes involved in cancer formation like the bcl2 oncogenes switch off apopto ...
... B. Apoptosis is programmed cell death and is based on activation of specific “death pathway genes.” Apoptosis may be physiologic or pathologic. The control of apoptosis is important in the process of carcinogenesis as some genes involved in cancer formation like the bcl2 oncogenes switch off apopto ...
Antonie van Leeuwenhoek
... the hydrophobicity of the solute as defined by its solubility in an octanol-water system. Hydrophobic solutes like bile salts, detergents and many antibiotics can pass membranes by diffusion through phospholipid bilayer regions. Because of the molecular make up of their outer membrane, this so-calle ...
... the hydrophobicity of the solute as defined by its solubility in an octanol-water system. Hydrophobic solutes like bile salts, detergents and many antibiotics can pass membranes by diffusion through phospholipid bilayer regions. Because of the molecular make up of their outer membrane, this so-calle ...
Student Learning Outcomes
... microbial life and the diverse roles microorganism play in the environment, including the multitude of applications of microbes in biotechnology, the food industry, agriculture, and medicine. Students can demonstrate an understanding, and ability to use, the scientific methods including observatio ...
... microbial life and the diverse roles microorganism play in the environment, including the multitude of applications of microbes in biotechnology, the food industry, agriculture, and medicine. Students can demonstrate an understanding, and ability to use, the scientific methods including observatio ...
AP Biology
... • A signal molecule, a ligand, binds to a receptor protein in a lock and key fashion, causing the receptor to change shape. Most receptor proteins are in the cell membrane but some are inside the cell. The G-protein is a common membrane receptor. ...
... • A signal molecule, a ligand, binds to a receptor protein in a lock and key fashion, causing the receptor to change shape. Most receptor proteins are in the cell membrane but some are inside the cell. The G-protein is a common membrane receptor. ...
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... Homologous chromosomes are different from sister chromatids Homologous Chromosomes Have the same sequence of genes on each chromosome in the pair But may carry different versions of the same gene Sister chromatids are copies of a single chromosome that are attached to each other and are ...
... Homologous chromosomes are different from sister chromatids Homologous Chromosomes Have the same sequence of genes on each chromosome in the pair But may carry different versions of the same gene Sister chromatids are copies of a single chromosome that are attached to each other and are ...
Bio07_TR_U03_CH07.QXD
... Section 7.3 – Facilitated Diffusion and Active Transport Facilitated Diffusion and Active Transport Facilitated diffusion occurs when a substance diffuses across the cell membrane through a protein channel. Active transport occurs when the cell uses energy to carry a substance across the cell membra ...
... Section 7.3 – Facilitated Diffusion and Active Transport Facilitated Diffusion and Active Transport Facilitated diffusion occurs when a substance diffuses across the cell membrane through a protein channel. Active transport occurs when the cell uses energy to carry a substance across the cell membra ...
1. Overview of Transport in Plants 11/25/2014 1
... a combination of the following: ROOT PRESSURE (a minor factor) • active transport of ions into the roots lowers the water potential resulting in water flowing in due to osmosis TRANSPIRATION (the major factor) • loss of water through the stomata of leaves • adhesion of water to xylem vessels & cohes ...
... a combination of the following: ROOT PRESSURE (a minor factor) • active transport of ions into the roots lowers the water potential resulting in water flowing in due to osmosis TRANSPIRATION (the major factor) • loss of water through the stomata of leaves • adhesion of water to xylem vessels & cohes ...
Cell communication
... • A signal molecule, a ligand, binds to a receptor protein in a lock and key fashion, causing the receptor to change shape. Most receptor proteins are in the cell membrane but some are inside the cell. The G-protein is a common membrane receptor. ...
... • A signal molecule, a ligand, binds to a receptor protein in a lock and key fashion, causing the receptor to change shape. Most receptor proteins are in the cell membrane but some are inside the cell. The G-protein is a common membrane receptor. ...
Viscoelastic Properties of the Cell Nucleus
... than intact chondrocytes. These data provide important evidence of the constitutive behavior and viscoelastic properties of the cell nucleus. In this manner, a direct, quantitative measurement of the biomechanical properties of the nucleus has important implications regarding theoretical models of c ...
... than intact chondrocytes. These data provide important evidence of the constitutive behavior and viscoelastic properties of the cell nucleus. In this manner, a direct, quantitative measurement of the biomechanical properties of the nucleus has important implications regarding theoretical models of c ...
Classification
... classification system to name organisms and group them in a logical manner. • Scientists classify organisms and assign each organism a universally accepted name based on a common criteria = taxonomy • Science requires both general and very specific categories to properly categorize all organisms. • ...
... classification system to name organisms and group them in a logical manner. • Scientists classify organisms and assign each organism a universally accepted name based on a common criteria = taxonomy • Science requires both general and very specific categories to properly categorize all organisms. • ...
The cortical cytoskeletal network and cell-wall
... evolved in the charophytes. However, an interesting variation on the cortical band theme is present in Penium, where two satellite microtubule bands are produced at the onset of cell expansion, each of which is destined to become an IMB in the two daughter cells after cytokinesis. These unique cytos ...
... evolved in the charophytes. However, an interesting variation on the cortical band theme is present in Penium, where two satellite microtubule bands are produced at the onset of cell expansion, each of which is destined to become an IMB in the two daughter cells after cytokinesis. These unique cytos ...
plant hormones
... • Orchids are prized for their beautiful long lasting flowers exhibiting an incredible range of diversity in size, shape and colour. • It is very difficult to get orchids to breed sexually and to maintain the desired traits • Micropropagation has been so successful that orchids occupy a position as ...
... • Orchids are prized for their beautiful long lasting flowers exhibiting an incredible range of diversity in size, shape and colour. • It is very difficult to get orchids to breed sexually and to maintain the desired traits • Micropropagation has been so successful that orchids occupy a position as ...
Immunocytochemistry of Rhamnogalacturonan II in Cell Walls of
... each). Germinating pollen tubes were fixed similarly except that the fixative was made in the germinating medium. The tissues were passed through an ethanol series and embedded in LR White resin (London Resin Co. Ltd., London) and polymerized in gelatin capsules overnight at 60°C. In some experiment ...
... each). Germinating pollen tubes were fixed similarly except that the fixative was made in the germinating medium. The tissues were passed through an ethanol series and embedded in LR White resin (London Resin Co. Ltd., London) and polymerized in gelatin capsules overnight at 60°C. In some experiment ...
Arabidopsis WPP-Domain Proteins Are
... and composition. In contrast with vertebrates, the protein composition of the NE and the function of NE proteins are barely understood in plants. MFP1 attachment factor 1 (MAF1) is a plant-specific NE-associated protein first identified in tomato (Lycopersicon esculentum). Here, we demonstrate that ...
... and composition. In contrast with vertebrates, the protein composition of the NE and the function of NE proteins are barely understood in plants. MFP1 attachment factor 1 (MAF1) is a plant-specific NE-associated protein first identified in tomato (Lycopersicon esculentum). Here, we demonstrate that ...
Cytokinesis
Cytokinesis (cyto- + kinesis) is the process during cell division in which the cytoplasm of a single eukaryotic cell is divided to form two daughter cells. It usually initiates during the early stages of mitosis, and sometimes meiosis, splitting a mitotic cell in two, to ensure that chromosome number is maintained from one generation to the next. After cytokinesis two (daughter) cells will be formed that are exact copies of the (parent) original cell. After cytokinesis, each daughter cell is in the interphase portion of the cell cycle. In animal cells, one notable exception to the normal process of cytokinesis is oogenesis (the creation of an ovum in the ovarian follicle of the ovary), where the ovum takes almost all the cytoplasm and organelles, leaving very little for the resulting polar bodies, which then die. Another form of mitosis without cytokinesis occurs in the liver, yielding multinucleate cells. In plant cells, a dividing structure known as the cell plate forms within the centre of the cytoplasm and a new cell wall forms between the two daughter cells.Cytokinesis is distinguished from the prokaryotic process of binary fission.