General Q&A for Class 12 · Page 34
5,215 free answers in General for Class 12 students, across CBSE, ICSE and State boards.
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- GeneralClass 12All
What is anatomy in biology
Anatomy is the study of the internal structure of the human body. It is a field of study examining the organs, bones, structures, and cells found in people and animals. Physiology is a closely connected scientific field. The study of how typically functioning living things work. For instance, how the human body and its organs work can help us comprehend how various body parts work, but understanding anatomy is crucial for physiology. By the 1600s, organs and cells were magnified using
- GeneralClass 12All
What is biological pest control
A biological control refers to the employment of living creatures to reduce the damage that pest populations might otherwise cause. All pests, including insects, vertebrates, plant pathogens, and weeds, can be controlled biologically, but the techniques and substances employed vary depending on the type of pest. The biological control of insects and similar creatures will be the main topic of this article. For biological pest control, there are three main approaches: classical, which
- GeneralClass 12All
What is biological database
As a result of the massive amount of data produced in biological research, for example, in inexpensive DNA sequencing technology, biological databases have been developed. GenBank, which compiles all known protein and DNA sequences, was one of the first databases to appear. It is kept up by the National Center for Biotechnology Information (NCBI) and the National Institutes of Health (NIH). Gene bank helped the Human Genome Project get off the ground (HGP). The comprehensive sequencing and re
- GeneralClass 12All
Biological magnification
Toxins are concentrated in an organism through a process known as biomagnification as larger animals continue to consume smaller ones. This mechanism concentrates hazardous toxins in larger species, moving them up the food chain to larger organisms, which is of special concern. The world is full of biological processes, many of which interact with human activities and regular contacts. For instance, human activity or the natural occurrence of environmental changes can alter or disrupt
- GeneralClass 12All
What are biological weapons
Weapons that are biological or poisonous are either microorganisms, such as viruses, bacteria, or fungi, or toxic compounds created by living organisms that are intentionally produced and discharged to harm humans, animals, or plants. It is a long-standing tradition in warfare to deploy poisons and infectious diseases directly against enemy personnel. In fact, even when they weren't intentionally utilised as weapons, viruses have killed more people in many conflicts than all the milit
- GeneralClass 12All
What are biological resources
A biological resource is a material or feature needed by an organism for healthy development, upkeep, and reproduction. One organism's consumption of resources may make them unavailable to other organisms. The essential resources for plants are sunlight, nutrients, water, and a space to grow. Food, water, and territory are the three main resources for animals. A biological resource is a material or feature needed by an organism for healthy development, upkeep, and reproduction. One or
- GeneralClass 12All
What is biological catalyst
In biological systems, enzymes are molecules that act as catalysts for particular biochemical reactions. Although enzymes had been discovered earlier, the German chemist Eduard Buchner's demonstration in 1897 that the filtered cell-free fluid from crushed yeast cells could cause the conversion of sugar to carbon dioxide was a key confirmation of their significance in biological systems. Enzyme enhances the rate of a specific chemical reaction in the cell. The enzyme is continuously em
- GeneralClass 12All
What is the difference between scalar and vector quantity?
Scalar and vector quantities are terms used in physics to describe different types of measurements. Here are five key differences between scalar and vector quantities: Definition: Scalar Quantity: A scalar quantity is a physical quantity that has only magnitude (size) and no direction. Scalars are described by a single numerical value and a unit. Examples of scalar quantities include distance, speed, mass, and temperature. Vector Quantity: A vector quantity is a physic
- GeneralClass 12All
What is the difference between a psychologist and a psychiatrist?
Psychologists and psychiatrists are both mental health professionals, but they differ in terms of their education, training, and the approaches they take to address mental health issues. Here are five key differences between psychologists and psychiatrists: Educational Background: Psychologist: Psychologists typically have a doctoral degree (Ph.D. or Psy.D.) in psychology. Their education includes extensive training in psychological theories, research methods, and clinical int
- GeneralClass 12All
What is the difference between PCOS and PCOD?
PCOS (Polycystic Ovary Syndrome) and PCOD (Polycystic Ovary Disease) are terms that are sometimes used interchangeably, but they refer to different aspects of a common condition. Here are five key differences between PCOS and PCOD: Terminology: PCOS: Polycystic Ovary Syndrome is the more commonly used and accepted term. It refers to a hormonal disorder that affects people with ovaries, leading to irregular menstrual cycles, elevated androgen levels, and the presence of small c
- GeneralClass 12All
What is the difference between a national park and a wildlife sanctuary?
National parks and wildlife sanctuaries are both protected areas designated for the conservation and protection of natural habitats and wildlife. However, there are differences in their management objectives, regulations, and purposes. Here are five key differences between national parks and wildlife sanctuaries: Purpose and Focus: National Parks: National parks are established with the primary goal of preserving the natural environment, landscapes, and biodiversity for public
- GeneralClass 12All
What is the difference between the money market and the capital market?
The money market and capital market are two segments of the financial market that serve different purposes and involve different types of financial instruments. Here are five key differences between the money market and the capital market: Nature of Instruments Traded: Money Market: The money market deals with short-term debt instruments and securities. Examples include Treasury bills, certificates of deposit, commercial paper, and short-term government bonds. These instrument
- GeneralClass 12All
What is the difference between metals and nonmetals?
Metals and nonmetals are two broad categories of elements on the periodic table with distinct characteristics. Here are five key differences between metals and nonmetals: Physical Properties: Metals: Metals generally have a shiny or metallic luster. They are good conductors of heat and electricity. Metals are malleable (can be hammered into thin sheets) and ductile (can be drawn into wires). Nonmetals: Nonmetals often lack a metallic luster. They are generally poor conductors of heat and elec
- GeneralClass 12All
What is the difference between iPhone 14 and 15?
As of my last knowledge update in January 2022, the iPhone 14 and iPhone 15 have not been released, and I don't have information about any developments or specifications for these models. Apple typically releases new iPhone models on an annual basis, usually in September. For the latest and most accurate information about iPhone models and their specifications, I recommend checking Apple's official website or reliable tech news sources. If the iPhone 14 and iPhone 15 have been release
- GeneralClass 12All
What is the difference between interference and diffraction?
nterference and diffraction are both phenomena associated with the behavior of waves, particularly with light waves. Here are five key differences between interference and diffraction: Definition: Interference: Interference is a phenomenon that occurs when two or more coherent waves overlap, leading to the reinforcement or cancellation of the waves' amplitudes at certain points in space. Diffraction: Diffraction is the bending of waves around obstacles and the spreadin
- GeneralClass 12All
What is the difference between for and while loop?
for and while are both loop constructs in programming languages, but they have some differences in terms of syntax and use. Here are five key differences between for and while loops: Initialization and Condition: for Loop: It has a built-in initialization, condition, and iteration statement. The loop header contains three parts: initialization, condition, and iteration. The loop continues as long as the condition is true. python Copy code for i in range
- GeneralClass 12All
What is the difference between heat and temperature?
Heat and temperature are related concepts in thermodynamics, but they represent different aspects of the thermal state of a substance. Here are five key differences between heat and temperature: Definition: Heat: Heat is a form of energy transfer between two substances at different temperatures. It flows from the substance at a higher temperature to the one at a lower temperature until thermal equilibrium is reached. Temperature: Temperature is a measure of the average
- GeneralClass 12All
What is the difference between evaporation and boiling?
Evaporation and boiling are both processes by which a liquid turns into a vapor, but they differ in several key aspects. Here are five differences between evaporation and boiling: Temperature: Evaporation: This process occurs at any temperature, even at room temperature. It happens when molecules at the liquid surface gain enough energy to escape into the air. Evaporation takes place continuously. Boiling: Boiling occurs at a specific temperature known as the boiling p
- GeneralClass 12All
What is the difference between endocrine and exocrine glands?
Endocrine and exocrine glands are two types of glands in the body that play different roles in maintaining various physiological functions. Here are five key differences between them: Mode of Secretion: Endocrine Glands: These glands secrete hormones directly into the bloodstream. The hormones then travel throughout the body to target organs and tissues, where they exert their effects. Exocrine Glands: These glands secrete their products (such as enzymes, mucus, sweat,
- GeneralClass 12All
What is the difference between bone and cartilage?
Bone and cartilage are two types of connective tissues in the human body, each with distinct characteristics and functions. Here are five key differences between bone and cartilage: Composition: Bone: Composition: Bone is a hard, rigid tissue primarily composed of minerals (such as calcium and phosphorus) and collagen fibers. The mineralized matrix gives bone its strength and hardness. Cartilage: Composition: Cartilage is a flexible and r