hydroxide) to the leftover of our colony that we chose earlier to see if the mixture becomes viscous and forms a string. We recorded our observation and moved on to incubating our live culture on the EMB-lactose and PEA. Vancomycin wasn’t available to be used. We added our live culture to the EMB-lactose and PEA and added sterile beads to spread the bacterial cells all over the surfaces of the two agars and removed the beads and incubated the two agars. While the agars were incubating‚ we prepared our
Premium Bacteria Microbiology Microorganism
Identifying the Unknown Bacteria: Bacillus cereus Brittany Moy Coastline Community College Abstract Bacillus cereus is a Gram-positive‚ facultative aerobic‚ spore-forming‚ rod-shaped bacterium that is widely distributed among the environment. Introduction The reason for identification of unknown bacteria was to help students recognize different bacteria through different biochemical tests and characteristics. This is important in the medical field because identification of unknown bacteria
Premium Bacteria Staining
When lactose becomes available the genes encoding β-galactosidase and lactose permease are upregulated in E. coli. true 2 Different globin polypeptides are expressed at similar levels during the embryonic and fetal stages of mammalian development. false 3 RNA polymerase can bind to the promoter region of the DNA even when the lac repressor is bound to the operator site. true Hide 4 Both eukaryotes and prokaryotes require a promoter region for gene
Premium DNA Gene expression
The use of positive and negative controls to determine the macromolecules present in an unknown solution Course # 6130‚ Wednesday‚ 7-10 PM‚ B2-151 Lab performed: September 21st‚ 2011 INTRODUCTION Every living thing is dependent on large complex molecules‚ known as macromolecules. The objective of this lab was to correctly identify which macromolecules the unknown solution was comprised of using various substances as experimental controls. There are four major types of biological macromolecules
Premium Glucose Iodine Starch
Disaccharides Maltose‚ sucrose‚ lactose Oligosaccharides 3 to 9 Polysaccharides or glycans Homopolysaccharides Heteropolysaccharides D-Glucose in Nature The most abundant carbohydrate is D-glucose. Cells of organisms oxidize glucose for energy: In animals excess glucose is converted to a polymer called glycogen. Disaccharides On hydrolysis give two molecules of monosaccharides E.g Sucrose (Cane sugar) Lactose (milk sugar) Maltose (malt
Free Glucose Carbohydrate Starch
1. Title: Double unknown identification of a mixed culture of Gram-negative and Gram-positive bacteria 2. Author: Nick Fiore‚ University of Kansas‚ Biology 402‚ Fall 2014 3:00pm room 6040 3. Abstract: The purpose of this experiment was to isolate two unknown bacteria and perform a series of selective and differential tests to correctly identify each. After the bacteria was isolated a series of differential and selective tests following the dichotomous key attached were used to identify each bacteria
Premium Bacteria Microbiology Gram staining
ANALYSIS OF CARBOHYDRATES Methodology Materials: |1% solutions: | conc. H2SO4 | |glucose‚ fructose‚ maltose‚ sucrose‚ lactose‚ |Molisch reagent | |agar-agar‚ gum arabic‚glycogen‚ cotton‚ |I2 in KI solution (Lugol’s iodine reagent)
Premium Glucose Iodine Carbohydrate
consumed the product. * One of the important uses of Lactobacillus Bulgaricus is making yogurt. It helps in this process by fermenting lactose. * Another important function of Lactobacillus Bulgaricus is its ability to break down special enzymes like lactose in the body. This breaking down of enzymes helps the digestive process‚ especially for people who are lactose intolerant. * This helpful bacteria also helps other beneficial bacteria to grow which helps the immune system. * It can also
Premium Bacteria Pneumonia
the possibility of disease or injury. Rickets usually occurs within children especially in the African American race. Therefore‚ risk factors for Rickets include things such as: race‚ age (children 6-24 months)‚ breast-feeding problems with mother‚ lactose
Premium Vitamin D
Diarrhea Causes & Causes of Diarrhea Most of the time we know what caused our diarrhea‚ right? You had a meal and within 2 hours you were stuck on the toilet. Or you had some ice cream and an hour later the diarrhea hit you. Or maybe it was the next morning. But what is it about that meal or that ice cream that has you screaming‚ "I hate diarrhea!"? Or what about other times when diarrhea seems to come out of nowhere? What caused it then? I’m going to share with you a number of causes of diarrhea
Premium Digestion Allergy Small intestine