Station 1: Components of prokaryotic cells
... Station 9 Bad Bacteria – Pathogens and Antibiotics Bacteria get a lot of bad press because some of them are really bad! There are plenty of good bacteria but these don’t make the news so often because they just get on with their jobs and don’t cause any trouble. In fact, without good bacteria we wo ...
... Station 9 Bad Bacteria – Pathogens and Antibiotics Bacteria get a lot of bad press because some of them are really bad! There are plenty of good bacteria but these don’t make the news so often because they just get on with their jobs and don’t cause any trouble. In fact, without good bacteria we wo ...
The Cell Wall of Prokaryotes: Peptidoglycan and Related Molecules
... – Can only survive inside of their host – no need for cell wall but have tough membranes • More resistant to rupture than other bacteria ...
... – Can only survive inside of their host – no need for cell wall but have tough membranes • More resistant to rupture than other bacteria ...
Microscopy and Cell Structure
... Bacterial cells have variety of internal structures Some structures are essential for life Chromosome Ribosome Others are optional and can confer selective ...
... Bacterial cells have variety of internal structures Some structures are essential for life Chromosome Ribosome Others are optional and can confer selective ...
Cell Membrane
... – This is done to build up the concentration gradient (and potential energy) to be used later. In other words, you put in a little bit of energy now to get back a lot of energy later. ...
... – This is done to build up the concentration gradient (and potential energy) to be used later. In other words, you put in a little bit of energy now to get back a lot of energy later. ...
Prokaryotic and Eukaryotic Cell Structure
... Another system for classifying Prokaryotes. Still use kingdom, division or phylum, class, order, family, genus, species. Classification based on similar morphological and biochemical characteristics. ...
... Another system for classifying Prokaryotes. Still use kingdom, division or phylum, class, order, family, genus, species. Classification based on similar morphological and biochemical characteristics. ...
Chapter 9 Signal Transduction and Cell Growth
... to changes in their environment (i.e., the outside world). Cells are equipped with numerous receptor proteins in order to detect changes that occur on an extracellular level. When bound with signaling molecules, receptors change their structure, thereby greatly altering the structure and functions o ...
... to changes in their environment (i.e., the outside world). Cells are equipped with numerous receptor proteins in order to detect changes that occur on an extracellular level. When bound with signaling molecules, receptors change their structure, thereby greatly altering the structure and functions o ...
A. diffuser
... Why is it able to pass through the plastic bag?______________________________________ When molecules move DOWN the concentration gradient it means they are moving from ______________ A. an area of low concentration to an area of higher concentration B. an area of high concentration to an area of low ...
... Why is it able to pass through the plastic bag?______________________________________ When molecules move DOWN the concentration gradient it means they are moving from ______________ A. an area of low concentration to an area of higher concentration B. an area of high concentration to an area of low ...
Mechanisms of Hormonal Action
... receptors with KD values ranging from 10-12 to 10-6 M. Only a minute amount of the hormones are required to induce response. The binding of the hormone stimulates a chemical activity that is communicated into the cell. Steroids are another type of hormone. Steroids are derived from cholesterol and r ...
... receptors with KD values ranging from 10-12 to 10-6 M. Only a minute amount of the hormones are required to induce response. The binding of the hormone stimulates a chemical activity that is communicated into the cell. Steroids are another type of hormone. Steroids are derived from cholesterol and r ...
11/16
... Distinguished by their structure and mechanism of motility Slender long bacteria with a helical shape Many are too thin to be seen using phase-contrast or dark-field microscopy ...
... Distinguished by their structure and mechanism of motility Slender long bacteria with a helical shape Many are too thin to be seen using phase-contrast or dark-field microscopy ...
Swimming behavior of the monotrichous bacterium Pseudomonas
... fluid dynamics (Berg, 1975; Ping, 2012). The cell dimension and flagellation are key parameters that determine output. The cells of P. fluorescens SBW25 are monotrichous as expected, but not in sensu stricto. More than 60% flagellated cells are with one flagellum (Fig. 1a inset). Among the 254 fluor ...
... fluid dynamics (Berg, 1975; Ping, 2012). The cell dimension and flagellation are key parameters that determine output. The cells of P. fluorescens SBW25 are monotrichous as expected, but not in sensu stricto. More than 60% flagellated cells are with one flagellum (Fig. 1a inset). Among the 254 fluor ...
How does inflammation contribute to pathogenesis of atherosclerosis.
... Fatty streak formation in human fetal aortas is enchanced by maternal hypercholesterolemia: evidence for early oxidation of LDL Apo-B (+) ...
... Fatty streak formation in human fetal aortas is enchanced by maternal hypercholesterolemia: evidence for early oxidation of LDL Apo-B (+) ...
Early History of Earth
... proposed that these organisms were most likely anaerobic. • For food, the first prokaryotes probably used some of the organic molecules that were abundant in Earth’s early oceans. • Over time, these heterotrophs would have used up the food supply. • Heterotrophs are organisms which obtain their food ...
... proposed that these organisms were most likely anaerobic. • For food, the first prokaryotes probably used some of the organic molecules that were abundant in Earth’s early oceans. • Over time, these heterotrophs would have used up the food supply. • Heterotrophs are organisms which obtain their food ...
AP Cell Signaling
... You should now be able to: 1. Describe the nature of a ligand-receptor interaction and state how such interactions initiate a signal-transduction system 2. Compare and contrast G protein-coupled receptors, tyrosine kinase receptors, and ligand-gated ion channels 3. List two advantages of a multiste ...
... You should now be able to: 1. Describe the nature of a ligand-receptor interaction and state how such interactions initiate a signal-transduction system 2. Compare and contrast G protein-coupled receptors, tyrosine kinase receptors, and ligand-gated ion channels 3. List two advantages of a multiste ...
Taking notes from written material includes
... In all of these types of note taking techniques, as someone speaks you must filter out the unimportant words and write the important words. How do you know which words to write? Let’s use an example. In this case you will be able to view the words of the speaker. Later, you will be writing notes whe ...
... In all of these types of note taking techniques, as someone speaks you must filter out the unimportant words and write the important words. How do you know which words to write? Let’s use an example. In this case you will be able to view the words of the speaker. Later, you will be writing notes whe ...
Imaging Organic and Biological Materials with Low Voltage
... channels several microns across. At higher magnification, the gel is shown to have plenty of nano-pores (<200nm). In contrast, the physicalchemical gel, while still having a spongy structure with micro pores and channels, has a heterogeneous composition. A minor grainy porous phase has formed in the ...
... channels several microns across. At higher magnification, the gel is shown to have plenty of nano-pores (<200nm). In contrast, the physicalchemical gel, while still having a spongy structure with micro pores and channels, has a heterogeneous composition. A minor grainy porous phase has formed in the ...
Common Characteristics of B and T Lymphocytes
... The B cell antigen receptor is a molecule of membrane-bound antibody. The T cell antigen receptor, while not an antibody, shares some structural and functional properties with antibodies. The T cell antigen receptor binds to protein antigens that have been digested into short peptides and are ...
... The B cell antigen receptor is a molecule of membrane-bound antibody. The T cell antigen receptor, while not an antibody, shares some structural and functional properties with antibodies. The T cell antigen receptor binds to protein antigens that have been digested into short peptides and are ...
Common Characteristics of B and T Lymphocytes
... • The B cell antigen receptor is a molecule of membrane-bound antibody. • The T cell antigen receptor, while not an antibody, shares some structural and functional properties with antibodies. • The T cell antigen receptor binds to protein antigens that have been digested into short peptides and are ...
... • The B cell antigen receptor is a molecule of membrane-bound antibody. • The T cell antigen receptor, while not an antibody, shares some structural and functional properties with antibodies. • The T cell antigen receptor binds to protein antigens that have been digested into short peptides and are ...
Single cell amoeba increases MRSA numbers 1000
... bacteria. As amoebae are often found in healthcare environments this discovery has implications for the infection control strategies adopted by hospitals. The single cell amoeba, Acanthamoeba polyphagam commonly eats and digests environmental bacteria. It also engulfs pathogens such as MRSA. However ...
... bacteria. As amoebae are often found in healthcare environments this discovery has implications for the infection control strategies adopted by hospitals. The single cell amoeba, Acanthamoeba polyphagam commonly eats and digests environmental bacteria. It also engulfs pathogens such as MRSA. However ...
Membrane Permeability Suggested Additional
... Why Do Cells Need Membrane Transporters? The lipid bilayer is an effective barrier to the movement of small hydrophilic molecules. Two factors govern the rate at which molecules can diffuse across the lipid bilayer. These are: (1) the membrane solubility of the specific molecules in question and (2 ...
... Why Do Cells Need Membrane Transporters? The lipid bilayer is an effective barrier to the movement of small hydrophilic molecules. Two factors govern the rate at which molecules can diffuse across the lipid bilayer. These are: (1) the membrane solubility of the specific molecules in question and (2 ...
The bacterial cell envelope - Philosophical Transactions of the
... approaches have brought us unparalleled insights into these microscopic organisms. We now also have a far greater understanding of their central importance to human health and disease and to the global environment. In this edition, we focus on a region of bacteria, the cell envelope, that in most ba ...
... approaches have brought us unparalleled insights into these microscopic organisms. We now also have a far greater understanding of their central importance to human health and disease and to the global environment. In this edition, we focus on a region of bacteria, the cell envelope, that in most ba ...
bacteria webquest
... Introduction: Bacteria are often maligned as the causes of human and animal disease. However, some bacteria produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies, or on the roots of certain plants, co ...
... Introduction: Bacteria are often maligned as the causes of human and animal disease. However, some bacteria produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies, or on the roots of certain plants, co ...
cell signaling in class
... Receptors in the Plasma Membrane • Most water-soluble signal molecules bind to specific sites on receptor proteins in the plasma ...
... Receptors in the Plasma Membrane • Most water-soluble signal molecules bind to specific sites on receptor proteins in the plasma ...
Archaea 1
... Domain Archaea wasn’t recognized as a major domain until the 20th century Although many books and articles refer to them as “Archaebacteria” the term has since been abandoned ...
... Domain Archaea wasn’t recognized as a major domain until the 20th century Although many books and articles refer to them as “Archaebacteria” the term has since been abandoned ...
Presentazione di PowerPoint
... changing single amino acids, lipids are much more constrained in changing their CD1-binding moieties because these modifications are often not compatible with their biological function. ...
... changing single amino acids, lipids are much more constrained in changing their CD1-binding moieties because these modifications are often not compatible with their biological function. ...
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.