Mode of Action of Antifungal Drugs

Mode of Action of Antifungal Drugs

Fungal cell membranes have a unique sterol, ergosterol, which replaces cholesterol found in mammalian cell membranes.  An antifungal agent is a drug that selectively eliminates fungal pathogens from a host with minimal toxicity to the host. 1. Polyene antibiotics The poleyenes possess a macrocyclic ring, … Read more

Blood cells and its types with functions

Blood cells and its types with functions

Blood cells are the cells which are produced during hematopoiesis and found mainly in the blood. Blood is composed of the blood cells which accounts for 45% of the blood tissue by volume, with the remaining 55% of the volume composed of plasma, the liquid … Read more

Difference between Serum and Plasma

Difference between Serum and Plasma

S.N. Characteristics Serum Plasma 1. Definition Serum is the liquid part of the blood after the coagulation. Plasma is a clear and yellowish fluid part of the blood. 2. Composition Serum is the water fluid from blood without the clotting factors. Plasma is the blood … Read more

Difference between Replication and Transcription

Difference between Replication and Transcription

S.N. Characteristics Replication Transcription 1. Definition DNA replication is the process of making two daughter strand where each daughter strand contains half of the original DNA double helix. Transcription is the process of synthesis of RNA using DNA as a template. 2. Purpose To conserve … Read more

Differences Between Mitosis and Meiosis

Differences Between Mitosis and Meiosis

Mitosis is a process of asexual reproduction in which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell. Meiosis is a type of cellular reproduction in which the number of chromosomes are reduced by half … Read more

Differences between DNA and RNA

Differences between DNA and RNA

Here are 17 differences between DNA and RNA. S.N. DNA RNA 1. DNA stands for Deoxyribonucleic Acid. The sugar portion of DNA is 2-Deoxyribose. RNA stands for Ribonucleic Acid.  The sugar portion of RNA is Ribose. 2. The helix geometry of DNA is of B-Form … Read more

Techniques of Virus Cultivation

Inoculation into embryonated egg

Viruses are obligate intracellular parasites so they depend on host for their survival. They cannot be grown in non-living culture media or on agar plates alone, they must require living cells to support their replication. The primary purpose of virus cultivation is: To isolate and … Read more

Differences Between Cilia and Flagella

Differences Between Cilia and Flagella

Flagella are the complex filamentous cytoplasmic structure protruding through cell wall. These are unbranched, long, thread like structures, mostly composed of the protein flagellin, intricately embedded in the cell envelope. Cilia are slender, microscopic, hair-like structures or organelles that extend from the surface of nearly … Read more

Different Size, Shape and Arrangement of Bacterial Cells

Different Size, Shape and Arrangement of Bacterial Cells

Bacteria are prokaryotic, unicellular microorganisms, which lack chlorophyll pigments. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. Due to the presence of a rigid cell wall, bacteria maintain a definite shape, though they vary … Read more