Microbiology is the branch of science that studies tiny living things and how they interact with other tiny and big living things.
Microorganisms are very small organisms that can only be seen through a microscope because they are too small to see with the naked eye. Microorganisms are things like bacteria, fungi, archaea, protozoa, and viruses that are very small.
Basic microscopy is a wide range of studies that help researchers learn about the biochemistry, physiology, cell biology, ecology, evolution, and clinical aspects of microorganisms, as well as how the host reacts to these agents.
Microbiology also looks at the structure, function, and classification of these organisms, as well as how they can be used and how their actions can be controlled.
Anton von Leeuwenhoek’s invention of the microscope led to the start of the field of microbiology.
On the one hand, microbes are used because they have special properties that make it possible to make antibiotics, amino acids, hormones, and other therapeutic compounds. They are also used to make food and products that go with food.
Microorganisms also help break down things like lignocellulosic biomass, which is used to make second-generation ethanol or biogas.
In the same way, microorganisms are dangerous for both industry (food spoilage) and human health because of their genes and biochemistry.
At first, microbiology was only connected to pathogenic microorganisms, which cause different kinds of diseases in different groups of living things.
Since microbiology became a field of study, there have been more ways to use microorganisms in different areas.
Because microorganisms are used in food and medicine, the field of microbiology has grown into other fields and studies.
So, over time, the field has been divided into more groups, such as agriculture microbiology, food microbiology, pharmaceutical microbiology, systemic microbiology, etc.
Microorganisms are used in a lot of different research projects because they are easy to control and reproduce compared to other living things. This has also led to more research in microbiology.
Studies in microbiology are important for finding new and more advanced ways to find new microorganisms and the diseases and applications they cause.
Microbiology also looks at ways to find, classify, and study microorganisms, as well as how they live and die.
All of this helps us learn more about microorganisms and how they keep the ecosystem running.
Through a process called genetic recombination, microbiology and microorganisms can be used to make new microorganisms that have been genetically engineered.
Aside from that, different microorganisms are used to make food, industrial products, and antibiotics.
Biosafety refers to the practices and precautions taken to prevent harmful biological agents—like viruses, bacteria, or toxins—from accidentally harming people, animals, or the environment. Think of it as a set of rules and tools scientists use to stay safe while working with dangerous germs. To organize these safety measures, experts created biosafety levels (BSL), which range … Read more
All living organisms are grouped into three major categories under the three-domain system, a modern way to classify life based on genetic and evolutionary relationships. Proposed by microbiologist Carl Woese in the 1990s, this system splits life into Bacteria, Archaea, and Eukarya. Bacteria are the familiar single-celled microbes found everywhere, from soil to our bodies, lacking a cell … Read more
The Beer-Lambert Law is a handy principle used to understand how light interacts with substances, like liquids or gases. Imagine shining a flashlight through a glass of colored water—some of the light gets absorbed, right? This law basically says that the amount of light absorbed depends on three things: how thick the glass is (path … Read more
HACCP, short for Hazard Analysis Critical Control Points, is a practical system designed to keep food safe throughout its production. Rather than relying solely on end-product testing, it tackles potential risks—like harmful bacteria, unwanted chemicals, or even physical hazards—by spotting where things could go wrong during processes like cooking, cooling, or packaging. Once these critical … Read more
The normal flora, or microbiota, in the mouth and gut refers to the community of tiny organisms—like bacteria, fungi, and viruses—that naturally live in these areas without causing harm. In the mouth, hundreds of species thrive, especially in warm, moist spots like the tongue, teeth, and gums. Common bacteria include Streptococcus, which helps break down food … Read more
typical flora of skin, hair, and nails is the stable community of microorganisms—mostly bacteria and fungus—that live on the outside surfaces of the human body without causing damage under typical circumstances. These communities, sometimes referred to as the skin microbiome, occupy ecological niches, fight against infections, and generate molecules that stop microbial invasion, therefore safeguarding … Read more
What is Eye and Ear Microbiota (Microbiome) or Normal Flora of Eye & Ear? Normal Flora of the Ear Microorganism Type Category Staphylococcus spp. Gram-positive Bacteria Alloiococcus otitis Gram-positive Bacteria Corynebacterium spp. Gram-positive Bacteria Microbacterium spp. Gram-positive Bacteria Bacillus spp. Gram-positive Bacteria Arthrobacter spp. Gram-positive Bacteria Turicella otitidis Gram-positive Bacteria Micrococcus spp. Gram-positive Bacteria Moraxella … Read more
The human body is home to trillions of tiny organisms, like bacteria, fungi, and viruses, that live on the skin, in the mouth, gut, and other areas. This community of microbes is called the human microbiome. Most of these organisms aren’t harmful—in fact, many are essential for health. They help digest food, produce vitamins, and even … Read more
What is Adaptation? Definition of Adaptation Adaptation is the process by which an organism adjusts to its environment through changes in behavior, physiology, or structure, enhancing its chances of survival and reproduction. Types of Adaptations Adaptations are the features and behaviors that help organisms survive in their environments. These adaptations can be physical, behavioral, or … Read more
What is Non-communicable disease? Types of Non-Communicable Diseases Non-communicable diseases (NCDs) are chronic health conditions that do not spread from person to person. These diseases are typically long-lasting and progress slowly. They can severely impact an individual’s quality of life and contribute to high mortality rates. NCDs are divided into several categories, each affecting different … Read more
Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
Write a note on economic importance of algae and gymnosperms.
Mention the ploidy of the following: protonemal cell of a moss; primary endosperm nucleus in dicot; leaf cell of a moss; prothallus cell of a fern; gemma cell in Marchantia; meristem cell of monocot; ovum of a liverwort; and zygote of a fern.
Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.
When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm, and an angiosperm?
What is heterospory? Briefly comment on its significance. Give two examples.
Explain briefly the following terms with suitable examples: (i) protonema (ii) antheridium (iii) archegonium (iv) diplontic (v) sporophyll (vi) isogamy
Differentiate between the following: (i) red algae and brown algae (ii) liverworts and moss (iii) homosporous and heterosporous pteridophyte
Match the following (column I with column II) (a) Chlamydomonas (b) Cycas (c) Selaginella (d) Sphagnum
Describe the important characteristics of gymnosperms.
What is the basis of classification of algae?
what is the energy released by the organic compound mostly used to do
Structure of Water and Hydrogen Bonding Flashcard
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