Difference between active transport and passive transport

Difference between active transport and passive transport

Difference between active transport and passive transport Active and passive transport are the two main biological process which plays an important role in supplying nutrients, water, oxygen, and other essential molecules to cells and also by removing waste products. Both active and passive transport works for the same cause, but with different movement. Active transport … Read moreDifference between active transport and passive transport

Different forms of DNA- A form, B form, Z form

Different forms of DNA

Different forms of DNA- A form, B form, Z form The right-handed double-helical Watson – Crick Model for B-form DNA is the most commonly known DNA structure. In addition to this classic structure, several other forms of DNA have been observed. The helical structure of DNA is thus variable and depends on the sequence as … Read moreDifferent forms of DNA- A form, B form, Z form

Biochemical Test of Clostridium tetani

Biochemical Test of Clostridium tetani

Biochemical Test of Clostridium tetani Some of the characteristics are as follows: Basic Characteristics Properties (Clostridium tetani) Capsule Negative (-ve) Catalase Negative (-ve) Flagella Peritrichous Gas Positive (+ve) Gelatin Hydrolysis Positive (+ve) Gram Staining Gram-stain-positive, but become Gram-stain-negative after approximately 24 h incubation. Growth in 20% Bile Negative (-ve) Growth in 6.5% NaCl Negative (-ve) … Read moreBiochemical Test of Clostridium tetani

Charcoal Selective Medium

Result Interpretation on Charcoal Selective Medium

Charcoal Selective Medium In 1984, Bolton et al. stated charcoal might efficiently substitute blood in a culture medium for isolating Campylobacter spp. Endtz et al. later confirmed there is higher isolation rate for Campylobacter while using the charcoal selective medium. Composition of Charcoal Selective Medium Ingredients Gm/L Beef extract 10.0g Gelatin Peptone 10.0g Sodium Chloride … Read moreCharcoal Selective Medium

Biochemical Test of Chlamydia trachomatis

Biochemical Test of Chlamydia trachomatis

Biochemical Test of Chlamydia trachomatis Some of the characteristics are: Basic Characteristics Properties (Chlamydia trachomatis) Organism Type Obligate intracellular organism that parasitize and multiply in the cytoplasm of eukaryotic cells within membrane bound vacuoles, termed inclusions, by a unique developmental cycle. ATP/ADP Transport System Negative (-ve) Body Types Elementary and Reticulate Flagella Absent Gram Staining … Read moreBiochemical Test of Chlamydia trachomatis

Watson and Crick DNA Model

Watson and Crick DNA Model

Watson and Crick DNA Model DNA stands for Deoxyribonucleic acid which is a molecule that contains the instructions an organism needs to develop, live and reproduce. It is a type of nucleic acid and is one of the four major types of macromolecules that are known to be essential for all forms of life. DNA Model … Read moreWatson and Crick DNA Model

Biochemical Test of Enterococcus faecium

Biochemical Test of Enterococcus faecium

Biochemical Test of Enterococcus faecium Some of the characteristics are as follows: Basic Characteristics Properties (Enterococcus faecium) 40% Bile Salts Positive (+ve) Capsule Negative (-ve) Catalase Negative (-ve) Citrate Negative (-ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Gram-positive H2S Negative (-ve) Hemolysis Variable 0.1% Methylene blue milk Positive (+ve) Motility Negative (-ve) 6.5% NaCl Positive … Read moreBiochemical Test of Enterococcus faecium

Biochemical Test of Clostridium botulinum

Biochemical Test of Clostridium botulinum

Biochemical Test of Clostridium botulinum (Type A and proteolytic strains of types B and F) Basic Characteristics Properties (Clostridium botulinum) Ammonia Production Positive (+ve) 20% Bile Negative (-ve) Capsule Negative (-ve) Catalase Negative (-ve) Flagella Peritrichous Gelatin Hydrolysis Positive (+ve) Gram Staining Gram-positive H2S Positive (+ve) Hemolysis Positive (+ve). β-hemolytic Indole Negative (-ve) Milk Digestion … Read moreBiochemical Test of Clostridium botulinum

Sandwich (Davson–Danielli) model of cell membrane

Sandwich (Davson–Danielli) model

Sandwich (Davson–Danielli) model of cell membrane The Davson–Danielli model (or paucimolecular model) was a model of the plasma membrane of a cell, proposed in 1935 by Hugh Davson and James Danielli. The model describes a phospholipid bilayer that lies between two layers of globular proteins and it is trilaminar and lipoproteinous. It was the first model that attempted to describe the position of proteins within the … Read moreSandwich (Davson–Danielli) model of cell membrane

Enzyme Technology

Enzyme Technology

Enzyme Technology The enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process. Enzymes found in nature have been used since ancient times in the production of food products, such as cheese, sourdough, beer, wine and vinegar, and … Read moreEnzyme Technology