of mass‚ you have to do two trials to narrow the uncertainty. Then add 100 g masses one by one to the mass hanger and record the extension of the spring and the time taken for that size of mass to complete twenty oscillations. You will be given an unknown mass and also record the time taken of that mass to oscillate twenty
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Answer the following: Mimi Meowz is a large designer-clothing company that sells mainly to large retail department stores‚ as well as to smaller boutique shops. The company requires its salespeople to use notebook computers to enter orders from customers. This information is then transmitted to its warehouses‚ where orders are shipped on a first-come‚ first-served basis. Unfortunately‚ the stores are aware of this shipping policy and are extremely competitive about which one of them will offer a
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Can Detour Protein Candy Bars make you look attractive? In our daily lives we are exposed to advertisements that can impact us negatively or positively. When we look at an advertisement we tend to look at what is being advertised but if we looked more closely‚ there is always a story that is trying to be told to us. Several advertisements can bring negative stories that can be sometimes sexist. Sexist ads portray women as objects in order to convince consumers to buy the
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Title- Protista Lab Concept- the concept of this lab was to explore what is in the pond water as living organisms and try to identify what it is. Some types of Protista are multi-cellular like giant kelp. Although they look much like plants‚ multi-cellular protists lack specialized tissues. Being eukaryotes‚ they have a membrane-bound true nucleus with linear chromosomes‚ and they have membrane-bound organelles. The kingdom Protista contains all eukaryotes that are not plants‚ animals‚ or fungi
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transformation of E. coli: The two plasmids were added to individual tubes containing E. coli and one with no plasmids. The three samples of E. coli were heated in a 42°C water bath for 90 seconds to heat shock the bacteria so that the plasmids would be taken up by the E. coli. These samples were then incubated at 30°C for half an hour and then plated on LB agar. Each tube was plated on an LB plate and a LB + ampicillin plate. Ampicillin is an antibiotic that is effective against E. coli‚ both pSA11 and
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with growth on antibiotics agar. Yes‚ S. epidermis of antibiotics had all the six species effective. The difference between the gram-staining reaction microorganisms was lipopolysaccharide. S. epidermis had a gram-positive with a thick cell wall and E. coli had a gram-negative with a thin cell wall. E.coli had susceptibility to penicillin because the double outer membrane kept pathogens from entering the cell. S. epidermis had no membrane and exposed infection and pathogen to bacteria. Yes‚ I think ethanol
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Physics Lab Report Format General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results. Part of your lab experience should be learning how to organize and present your work in a scientific way. There is no framework that can be used as a “one size fits all”‚ therefore this sample lab report should only be used as an example. Any lab report should have the following features:
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Michele Hindmarsh mhindma@my.wgu.edu Student ID# 000383032 MLT1 – Experiment 5; Task 6 Differential Staining Heidi Atkinson‚ MS Lab Experiment #5-Differential Staining Through the process of differential staining‚ there are distinct differences between the cell walls of gram-positive and gram-negative bacteria. In the case of gram-positive bacteria‚ the cell wall is comprised of 60-90% peptidoglycan and is very thick. There are numerous layers of teichoic acid bound with peptidoglycan
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The properties of dibenzalacetone make it a great substance to be used when protecting the skin from the sun. In the experiment performed‚ dibenzalacetone was created from an aldol condensation of 2 portions of benzaldehyde and acetone in sodium hydroxide. The reaction that occurred in this experiment is known as a specific aldol condensation called Claisen-Schmidt. In the reaction‚ the carbonyl of benzaldehyde reacts quickly with the acetone anion to create a hydroxyketone that dehydrates in the
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source. The slit was pointed towards the source‚ and the spectroscope was shifted until the spectrum was clearly visible. The appearance of the spectrum from the fluorescent light source was recorded. A discharge tube apparatus was retrieved from a lab cart for demonstration. A hydrogen discharge tube was inserted into the discharge tube apparatus with the spring loaded end first‚ followed by the non-spring loaded end. The discharge tube apparatus was plugged into the outlet. The hydrogen discharge
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