Dyes and stains Study guides, Class notes & Summaries

Fungi - cell wall made of chitin; Eukaryote Algae - cell wall made of silicates, eukaryotic Protozoa - Eukaryote Bacteria - Prokaryotic Virus - Acellular; only reproduce if they are inside of a living cell What allows a substance to cross a membrane - Protiens Substances that will never pass through a membrane - Charged substances Passive movement processes - No ATP needed 1. Diffusion 2. Facilitaed Diffusion 3. Osmosis Active Transport processes - Uniport Aniport Sy...

UFT IICRC Exam Questions and Answers With 100% Correct Solutions Latest 2024/2025 | Graded A+. Fabrics frequently are made from a blend or combination of --- Fibers 2. Natural fibers (rayon, cotton, linen) absorb water and other substances more easily than synthetic fibers, so they --- more slowly and --- more easily. 1) Dry 2) Stain 3. The cotton plant produces fibers from the --- --- of the plant. Seed Pod 4. Lignin is the binder in cellulose materials that dissolves in water to cause stai...

Heterochromatin correct answers form of DNA - tightly coiled, usually peripherally placed in the nucleus, dark-staining, inactive - not involved in RNA synthesis Euchromatin correct answers form of DNA - partially/fully uncoiled, centrally placed, light staining, active - involved in RNA synthesis Basophilic correct answers stains readily with basic dyes (e.g haemotoxylin is a basic dye that stains the nucleus - which is basophilic - blue/purple) Nuclear envelope correct answers double-...

What term describes the morphology of organisms that vary in shape and size? Pleomorphic i.e. coccobacilli Bacteriology arrangements: -pairs (diplococci "N. Gon"; diplobacilli -chains (streptococci, streptobacilli) -grape like clusters (staphylococci) -group of four-tetrads (peptococcus) -packets of eight-cuboidal (sarcina) -palisades (corneybacterium) Capsules are the basis of which test? serotyping and identification (capsules are antigenic); they are observed usi...

Microbiology Lab Test, Micro lab 1 Questions with Correct Answers Graded A+ Why are thick or dense smears less likely to provide a good smear preparation for microscopic evaluation? It will diminish the amount o flight that can pass through making it difficult to see under the microscope. Why is it essential that smears be air-dried? Why can't they be gently heated over the flame to speed up the drying process? 1. Overheat will denature and rupture the cell wall. 2. excess water on...

Molecular Cell Biology Final EXAM QUESTIONS AND CORRECT ANSWERS(VERIFIED ANSWERS)|AGRADE Separation of most blood cells is difficult, if not impossible, to achieve because they have similar properties and/or densities. What procedure is used to separate T-cells of the immune system from the many other different types of white blood cells or spleen cells? What feature of the T-cell facilitates the isolation protocol? Describe how this procedure is performed. - ANSWER- Flow cytometr...

Molecular Cell Biology Final EXAM QUESTIONS AND CORRECT ANSWERS(VERIFIED ANSWERS)|AGRADE Separation of most blood cells is difficult, if not impossible, to achieve because they have similar properties and/or densities. What procedure is used to separate T-cells of the immune system from the many other different types of white blood cells or spleen cells? What feature of the T-cell facilitates the isolation protocol? Describe how this procedure is performed. - ANSWER- Flow cytometry is used to...

Clinical Chemistry Exam 1 & (Book Chapters 1,2,3,4 Review Questions) Rated A+ Reverse osmosis (RO) is describes as a process: In which water is forced through a semipermeable membrane that acts as molecular filter. Activated carbon filters remove: Organic Compounds from water A 0.22 micron filter will remove: Particles with a diameter of 2.2 microns The unit of resistivity is: MQcm The electrical resistance measured between opposite faces of a 1.00 cm cube of an aqueous solution at a specifi...

Angelman syndrome Deletion of normally active maternal allele. Mental retardation, seizures, ataxia, inappropriate laughter ("happy puppet") Canavan disease autosomal recessive, chromosome 17 enzyme aspartoacylase hypotonia, poor head control, GE reflux of poor weight gain, demyelination, progressive leukodstrophy, and death in 1st decade coeliac disease protein gluten is not properly broken down cystic fibrosis Hereditary condition that causes the exocrine gland...

What are the three measurements used and what's the relationship between them? millimeters (mm) - 10^-3 M micrometers (Mm) - 10^-6 M nanometers (nm) - 10^-9 M 1000 nm = 1 Mm 1000 Mm = 1 mm Humans can see up to what measurement? ~100-200 Mm What are three contradictions to the definition of a microbe? Supersize microbial cells, Microbial communities, and viruses What are Robert Hooke - Built the first microscope - First to observe mold, fleas, and cork under a micro...