The cell is the basic unit of living things.
... Cells come from other cells. The studies of Hooke and Leeuwenhoek made people ask if all living things have cells. People continued to observe samples taken from all sorts of living matter. They continued to find cells, although often these cells looked very different from one another. Still, it wa ...
... Cells come from other cells. The studies of Hooke and Leeuwenhoek made people ask if all living things have cells. People continued to observe samples taken from all sorts of living matter. They continued to find cells, although often these cells looked very different from one another. Still, it wa ...
Lab #2
... 1. Place a slide with a bacterial smear on a staining rack. 2. STAIN the slide with crystal violet for 1-2 min. 3. Pour off the stain and rinse with water thoroughly. 4. Flood slide with Gram's iodine for 1-2 min. 5. Pour off the iodine and rinse with water thoroughly. 6. Decolorize by washing the s ...
... 1. Place a slide with a bacterial smear on a staining rack. 2. STAIN the slide with crystal violet for 1-2 min. 3. Pour off the stain and rinse with water thoroughly. 4. Flood slide with Gram's iodine for 1-2 min. 5. Pour off the iodine and rinse with water thoroughly. 6. Decolorize by washing the s ...
Membranes and Cell Transport
... substance from one side to the other by changing shape. Some of these proteins hydrolyze ATP as an energy source to actively pump substances across the membrane Enzymatic activity - A protein built into the membrane may be an enzyme with its active site exposed to substances in the adjacent solution ...
... substance from one side to the other by changing shape. Some of these proteins hydrolyze ATP as an energy source to actively pump substances across the membrane Enzymatic activity - A protein built into the membrane may be an enzyme with its active site exposed to substances in the adjacent solution ...
6 Kingdom Classification System Graphic Organizer (chapters 16
... Both, mostly multicellular Yeast is unicellular ...
... Both, mostly multicellular Yeast is unicellular ...
The Plasma Membrane - Sinoe Medical Association
... Isotonic: Concentration of both sides are same Hypotonic: Low concentration of solute Hypertonic: High concentration of solute 5. What are the 2 types of active processes? Active Transport, Vesicular Transport ...
... Isotonic: Concentration of both sides are same Hypotonic: Low concentration of solute Hypertonic: High concentration of solute 5. What are the 2 types of active processes? Active Transport, Vesicular Transport ...
HB Review
... 19. _O_ __ __ __ __ __ __ pressure is caused by water inside a plant cell pushing against the cell wall. 20. White blood cells use _P_ __ __ __ __ __ __ __ __ __ __ __ to engulf and destroy bacteria that the glycoproteins recognize as “not self”. LOOK AT THE DIAGRAMS. The black dots represent solute ...
... 19. _O_ __ __ __ __ __ __ pressure is caused by water inside a plant cell pushing against the cell wall. 20. White blood cells use _P_ __ __ __ __ __ __ __ __ __ __ __ to engulf and destroy bacteria that the glycoproteins recognize as “not self”. LOOK AT THE DIAGRAMS. The black dots represent solute ...
Bacterial Senescence, Programmed Death, and Premeditated Sterility
... deterioration of proteins. Green ovals denote proteins that are activated or accumulated during starvation and whose activity is important to slow down starvation-induced loss of cultivability. The red oval (Acn) is aconitase, the absence of which has been shown to retard loss of cultivability in st ...
... deterioration of proteins. Green ovals denote proteins that are activated or accumulated during starvation and whose activity is important to slow down starvation-induced loss of cultivability. The red oval (Acn) is aconitase, the absence of which has been shown to retard loss of cultivability in st ...
“ Signal Transduction”?
... (1) Small molecules: target the ATP binding site or other regions in protein kinase domain, e.g. Gleevec (to BCR-Abl) (2) Monoclonal Abs: target receptors, cytokines, other surface proteins, e.g. Herceptin (to Her), Erbitux (to EGFR) (3) Others: Decoy receptors (soluble CTLA4-Ig), Vaccines, RNAi,..e ...
... (1) Small molecules: target the ATP binding site or other regions in protein kinase domain, e.g. Gleevec (to BCR-Abl) (2) Monoclonal Abs: target receptors, cytokines, other surface proteins, e.g. Herceptin (to Her), Erbitux (to EGFR) (3) Others: Decoy receptors (soluble CTLA4-Ig), Vaccines, RNAi,..e ...
04Microbial Biotechnology
... the complex responses elicited by exposure of microbes to sublethal concentrations of antibiotics. In addition, we search for novel targets in essential functions to develop drugs to fight pathogens. Microbial engineering. The purpose is to generate bacterial strains optimised to obtain products of ...
... the complex responses elicited by exposure of microbes to sublethal concentrations of antibiotics. In addition, we search for novel targets in essential functions to develop drugs to fight pathogens. Microbial engineering. The purpose is to generate bacterial strains optimised to obtain products of ...
Question Bank –lecture two( 3) Q1 Explain briefly the fallowing : a
... into H2O and O2 while in anaerobic ,there is no catalase enzyme so H2O2 is accumulate and causes poisoning to bacterial cells, so it not need the O2 . 4. Microcerophilic : Bacteria which can growth in small amount of O2 e.x. coryne acne مسببات حب الشباب. h. Bacterial can utilized different substra ...
... into H2O and O2 while in anaerobic ,there is no catalase enzyme so H2O2 is accumulate and causes poisoning to bacterial cells, so it not need the O2 . 4. Microcerophilic : Bacteria which can growth in small amount of O2 e.x. coryne acne مسببات حب الشباب. h. Bacterial can utilized different substra ...
cell surface receptors
... Ions such as Na+, K+, Ca+2, and Clthen flow down their electrochemical gradient into the cell ...
... Ions such as Na+, K+, Ca+2, and Clthen flow down their electrochemical gradient into the cell ...
Electron Microscopy of Disrupted Bacteria treated
... inner layer suggests that it is not residual cell cytoplasm which, if present, generally occurs as irregular patches of electron-dense material. This inner layer is not complete in all the disrupted cells of Ps. denitri$cans, and it appears that the layer can be readily detached from the outer cell ...
... inner layer suggests that it is not residual cell cytoplasm which, if present, generally occurs as irregular patches of electron-dense material. This inner layer is not complete in all the disrupted cells of Ps. denitri$cans, and it appears that the layer can be readily detached from the outer cell ...
Cellular Transport Review
... __HYPER____tonic means there is a GREATER concentration of solute molecules OUTSIDE the cell than inside. __HYPO____ tonic means there is a LOWER concentration of solute molecules OUTSIDE the cell than inside. __ISO_____tonic means there is the SAME concentration of solute molecules outside the cell ...
... __HYPER____tonic means there is a GREATER concentration of solute molecules OUTSIDE the cell than inside. __HYPO____ tonic means there is a LOWER concentration of solute molecules OUTSIDE the cell than inside. __ISO_____tonic means there is the SAME concentration of solute molecules outside the cell ...
Antibacterials! - Littleton High School
... Too many antibiotics is not good for the body Increases the development of resistant bacteria in the body ▫ Creates even more ‘super bugs’ ▫ Hurts more than in helps! ...
... Too many antibiotics is not good for the body Increases the development of resistant bacteria in the body ▫ Creates even more ‘super bugs’ ▫ Hurts more than in helps! ...
Bacteria - Edmonds
... Antibiotics are chemicals which either kill bacteria or prevent their growth and reproduction Bacteria and other microbes produce antibiotics to reduce competition from other organisms Penicillin was the first to be used to fight disease - discovered accidently by Alexander Fleming in 1928 The disco ...
... Antibiotics are chemicals which either kill bacteria or prevent their growth and reproduction Bacteria and other microbes produce antibiotics to reduce competition from other organisms Penicillin was the first to be used to fight disease - discovered accidently by Alexander Fleming in 1928 The disco ...
Microbial Biochemistry and Pathogenesis Research Group
... the surface of Gram-negative bacteria that is also a critical structural component of the bacterial outer membrane. Bacteria with defects in the LPS molecule are more sensitive to a variety of antibiotics and they can be easily killed by host defensive mechanisms such as the serum complement ...
... the surface of Gram-negative bacteria that is also a critical structural component of the bacterial outer membrane. Bacteria with defects in the LPS molecule are more sensitive to a variety of antibiotics and they can be easily killed by host defensive mechanisms such as the serum complement ...
Bacterial Taxonomy（Professor Xiuzhu Dong）
... unfavorable energetics of the reactions. The syntrophic bacteria not only represent distinct phylogenetic branches within LGCGPB and γ-proteobacteria, respectively, but an ideal research material for understanding the mechanism of synergic metabolism. Lactic acid bacteria have been studied and appli ...
... unfavorable energetics of the reactions. The syntrophic bacteria not only represent distinct phylogenetic branches within LGCGPB and γ-proteobacteria, respectively, but an ideal research material for understanding the mechanism of synergic metabolism. Lactic acid bacteria have been studied and appli ...
Lecture 23 - Signaling 2
... by ligand-activation of an intrinsic tyrosine kinase function encoded in the cytoplasmic tail of the receptor. 2) Activation of the intrinsic tyrosine kinase activity requires receptor dimerization, which is often stimulated, or at least stabilized, by ligand binding. 3) Autophosphorylation of tyros ...
... by ligand-activation of an intrinsic tyrosine kinase function encoded in the cytoplasmic tail of the receptor. 2) Activation of the intrinsic tyrosine kinase activity requires receptor dimerization, which is often stimulated, or at least stabilized, by ligand binding. 3) Autophosphorylation of tyros ...
Molecular Biology Lab
... added, which destroys the peptidoglycan layer and breaks open the bacterial cells to release its contents (mainly chromosomal and plasmid DNA). Centrifuging then separates the chromosomal DNA along with other cellular debris (cellular membrane) into a pellet, while the plasmid DNA is present in the ...
... added, which destroys the peptidoglycan layer and breaks open the bacterial cells to release its contents (mainly chromosomal and plasmid DNA). Centrifuging then separates the chromosomal DNA along with other cellular debris (cellular membrane) into a pellet, while the plasmid DNA is present in the ...
Chapter 16 - Introductory & Human Biology
... • The outer surface of many prokaryotes consists of a polysaccharide-rich layer called the capsule or slime layer. • The proposed functions of the capsule or slime layer are: – to protect bacteria from desiccation – to bind to host cell receptors during colonization – to help bacteria evade the host ...
... • The outer surface of many prokaryotes consists of a polysaccharide-rich layer called the capsule or slime layer. • The proposed functions of the capsule or slime layer are: – to protect bacteria from desiccation – to bind to host cell receptors during colonization – to help bacteria evade the host ...
File
... effects of different concentrations of sugar solutions on plant cells Be able to understand and therefore use the key terms correctly ...
... effects of different concentrations of sugar solutions on plant cells Be able to understand and therefore use the key terms correctly ...
Primary Taste Sensations
... Molecules that are similar in structure to glucose will have a similar effect on the sensation of sweetness. Other monosaccharides such as fructose or artificial sweeteners like aspartame (Nutrasweet™), saccharine, or sucralose (Splenda™) will activate the sweet receptors as well. The affinity for e ...
... Molecules that are similar in structure to glucose will have a similar effect on the sensation of sweetness. Other monosaccharides such as fructose or artificial sweeteners like aspartame (Nutrasweet™), saccharine, or sucralose (Splenda™) will activate the sweet receptors as well. The affinity for e ...
N - Portal UniMAP
... during the death phase, some cells remain alive and continue metabolizing and reproducing, but the number of dying cells exceeds the number of new cells produced, so that eventually the population decreases to a fraction of its previous abundance. In some cases, all the cells die, while in others a ...
... during the death phase, some cells remain alive and continue metabolizing and reproducing, but the number of dying cells exceeds the number of new cells produced, so that eventually the population decreases to a fraction of its previous abundance. In some cases, all the cells die, while in others a ...
Chemotaxis
Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (e.g., glucose) by swimming toward the highest concentration of food molecules, or to flee from poisons (e.g., phenol). In multicellular organisms, chemotaxis is critical to early development (e.g., movement of sperm towards the egg during fertilization) and subsequent phases of development (e.g., migration of neurons or lymphocytes) as well as in normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.