Concept explainers
Videos
Do waterless cleaners affect all bacteria?
To write:
The effects of waterless cleaners on bacteria.
Introduction:
Hand hygiene is an important infection control intervention to prevent the transmission of microorganisms and should be practiced before and after the patient contact, when hands seem to be visibly dirty, after using the washroom and at many other times when hands may be soiled.
Explanation of Solution
Waterless hand hygiene rubs are a proven alternative to hand washing agents and also, when there are time constraints or lack of access to sinks and running water. Visible organic material must be removed for waterless agents to exert their antimicrobial activity. Waterless agents have the additional qualities of benefits of not requiring access to water and sinks, ease of use, rapid action and no risk of antimicrobial resistance. Antiseptic agents are more effective in reducing microbial counts on the skin rather than using soaps, liquid hand washes that reduce the skin flora.
Antiseptic hand scrubs are the waterless agents with disinfectant properties that decrease the number of microorganisms present. The individual applies a small amount to the hands and rub the hands together until the agent has dried off. An antiseptic hand rub does not require the use of exogenous water. Most alcohol-based hand antiseptics contain either ethanol, isopropanol, propanolol and the combination of any two of these products. They are available in various concentrations or in combination with a small amount of other antiseptics. Antimicrobial activity is due to their ability to denature proteins. These hand rubs do not remove organic materials, they cannot be used if the hands have been soiled.
Thus, waterless cleaners as antiseptic agents as hand scrubs and hand rubs have disinfectant properties within them and are highly effective in reducing the microbial counts of bacteria on the skin.
Want to see more full solutions like this?
Chapter 26 Solutions
Symbiosis, Lab Experiments in Microbiology
- 2. In one of the reactions of the citric acid cycle, malate is oxidized to oxaloacetate. When this reaction is considered in isolation, a small amount of malate remains and is not oxidized. The best term to explain this is a. enthalpy b. entropy c. equilibrium d. free energy e. loss of energyarrow_forward18. The citric acid cycle takes place in a. the chloroplasts b. the cytosol c. the inner mitochondrial membrane d. between the two mitochondrial membranes e. the mitochondrial matrix 40 WILarrow_forward8. Most reactions of anaerobic respiration are similar to a. aerobic respiration b. photosynthesis c. lactic acid fermentation d. alcoholic fermentation e. both c and darrow_forward
- 12. Which of the following molecules can absorb light? a. Pigments b. Chlorophyll c. Rhodopsin d. Carotenoids e. All of the abovearrow_forwardWhich of the following proteins or protein complexes is directly required for the targeting of mitochondrial inner membrane multipass proteins, such as metabolite transporters, whose signal sequence is normally not cleaved after import? OA. TIM22 OB. TIM23 C. OXA OD. Mia40 OE SAMarrow_forwardQUESTION 9 An animal cell has been wounded and has a small rupture in its plasma membrane. Which of the following is more likely to happen next? OA. The cell rapidly cleaves by cytokinesis. OB. The rate of receptor-mediati endocytosis is increased. OC. The rate of exocytosis is increased. OD. The rate of pinocytosis is increased.arrow_forward
- For the a subunit of a trimeric G protein, A. a G-protein-coupled receptor GPCR) acts as a guanine nucleotide exchange factor (GEF), whereas a regulator of G protein signaling (RGS) can act as a GTPase-activating protein (GAP). B. a GPCR acts as a GAP, whereas an RGS can act as a GEF. C. both a GPCR and an RGS can act as a GEF. O D. both a GPCR and an RGS can act as a GAP OE. None of the above.arrow_forwardA cell expresses a transmembrane protein that is cleaved at the plasma membrane to release an extracellular fragment. The fragment binds to receptor proteins on nearby cells and activates signaling pathways resulting in altered gene expression patterns in the cells. What form of intercellular signaling does this represent? OA. Contact-dependent signaling B. Paracrine signaling OC. Synaptic signaling D. Endocrine signaling E. Autocrine signalingarrow_forwardWhich of the following drive nuclearly encoded proteins import into the mitochondrial matrix? OA. ATP hydrolysis OB. Membrane Potential OC. K+ Ions OD. A and B OE. None of the abovearrow_forward
- Which of the following statements is true regarding Cholesterol import into the cell? OA. It is transported within LDL B. Receptor mediated endocytosis is involved OC. Release of cholesterol occurs in the Lysosome D. All of the above are true statements OE. None of the above are true statementsarrow_forwardIn which of the following schematic drawings of signaling pathways does the activation of the receptor lead to gene expression? Activating and inhibitory steps are indicated with (+) and (-), respectively. OA OB ㅇㅂㅇㅂㅇㅁ (+) Gene Expression Activated Signaling proteins Transcription receptor activator Bl D Gene Expression Gene Expression ㅁㅁㅇ Gene Expression Gene Expressionarrow_forwardWhich of the following events normally activates a GTP-binding protein? OA. GTP hydrolysis by the protein OB. Activation of an upstream GTPase-activating protein OC. Activation of an upstream guanine nucleotide exchange factor OD. Phosphorylation of a bound GDP molecule by an upstream phosphorylase OE. Pi release after GTP hydrolysisarrow_forward
Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College