Biology And Its Major Fields Of Specialization(First Year Chapter 1)
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Study of impact of terrestrial environment on rganisms belonging toearth is component of
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A)Biotechnology
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B)Microbiology
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C)Ecology
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D)Biotechnology
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About This Quiz
This Biology quiz covers fundamental concepts and major fields of specialization, assessing knowledge on ecology, bio-elements, cell structure, and the biosphere. It is designed for first-year students to test their understanding of basic biological principles.
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- 2.
The number of naturally occurring chemical elements involved in bio chemical reaction is:
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A)126
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B)86
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C)92
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D)206
Correct Answer
A. C)92Explanation
The correct answer is c)92. The number of naturally occurring chemical elements involved in bio chemical reactions is 92. These elements include hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, and many others. These elements are essential for the formation of biomolecules such as proteins, nucleic acids, carbohydrates, and lipids, which are the building blocks of life.Rate this question:
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- 3.
Which is not a category of classification in biology?
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A)Ecology
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B)Species
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C)Genus
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D)Order
Correct Answer
A. A)EcologyExplanation
Ecology is not a category of classification in biology because it is a scientific discipline that studies the interactions between organisms and their environment, rather than a specific taxonomic classification. The other options listed, species, genus, and order, are all categories within the hierarchical system of classification used in biology to categorize and organize different organisms based on their similarities and differences.Rate this question:
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- 4.
How many of the Bio-elements constituent 99% of the total human body
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A)30
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B)8
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C)5
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D)6
Correct Answer
A. D)6Explanation
The answer is d)6. This is because six bio-elements, namely oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus, make up approximately 99% of the total human body. These elements are essential for various biological processes and are found in abundance in the human body.Rate this question:
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- 5.
The part of earth inhabited by living organism and non living components is called
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A)Ecosystem
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B)Biosphere
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C)Habitat
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D)Niche
Correct Answer
A. B)BiosphereExplanation
The biosphere refers to the part of the Earth where living organisms exist, including all ecosystems. It encompasses all living organisms, their interactions with each other and with the non-living components of the environment. This includes the atmosphere, hydrosphere, and lithosphere. The biosphere is a dynamic system where energy and nutrients flow through various ecological processes, supporting life on Earth. It is the largest and most inclusive ecological unit, encompassing all ecosystems and habitats on the planet.Rate this question:
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- 6.
Which of the following is the structural and functional unit of life
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A)Nucleus
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B)Cytoplasm
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C)Cell
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D)Protoplasm
Correct Answer
A. C)CellExplanation
The cell is considered the structural and functional unit of life because it is the smallest unit of an organism that can carry out all the necessary functions of life. Cells are responsible for performing various activities such as metabolism, reproduction, and response to stimuli. They contain all the necessary organelles and molecules to carry out these functions. The nucleus, cytoplasm, and protoplasm are all components of a cell, but the cell itself is the fundamental building block of life.Rate this question:
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- 7.
Organism which are very similar and have a tendency of inbreeding are called
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A)Species
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B)Gene pool
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C)Community
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D)Niche
Correct Answer
A. A)SpeciesExplanation
Organisms that are very similar and have a tendency to inbreed are called species. This is because a species is defined as a group of organisms that can interbreed and produce fertile offspring. Inbreeding refers to the mating of individuals who are closely related genetically, which can lead to the expression of harmful recessive traits. Therefore, species that have a tendency to inbreed are often characterized by a high degree of genetic similarity within their population.Rate this question:
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- 8.
Which is not a macro molecule
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A)Starch
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B)Glycogen
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C)Protein
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D)CO2
Correct Answer
A. D)CO2Explanation
CO2 is not a macro molecule because it is a small molecule composed of only two atoms, carbon and oxygen. Macro molecules, on the other hand, are large molecules made up of repeating subunits called monomers. Starch, glycogen, and proteins are all examples of macro molecules as they consist of long chains of monomers. CO2, being a small molecule, does not fit the definition of a macro molecule.Rate this question:
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- 9.
Which is an inorganic molecule
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A)Glucose
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B)Amino acids
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C)Nucleotides
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D)All of the above
Correct Answer
A. D)All of the aboveExplanation
The correct answer is d) All of the above. This is because glucose, amino acids, and nucleotides are all organic molecules, meaning they contain carbon atoms. In contrast, inorganic molecules do not contain carbon atoms. Therefore, none of the options listed are inorganic molecules.Rate this question:
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- 10.
Identify the disease which (till now) do not have vaccine
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A)Polio
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B)Whooping Cough
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C)Measles
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D)AIDS
Correct Answer
A. D)AIDSExplanation
AIDS is the correct answer because, as of now, there is no vaccine available for AIDS. Despite significant advancements in medical research, no vaccine has been developed to prevent or cure HIV, the virus that causes AIDS. While there are antiretroviral drugs that can help manage the disease, prevention through safe practices and education remains the primary approach in controlling the spread of AIDS.Rate this question:
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- 11.
In which treatment cancerous part is exposed to short wave radiation from the radioactive material repeatedly at regular intervals
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A)Chemotherapy
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B)Radiotherapy
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C)Gene therapy
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D)Nutritional Treatment
Correct Answer
A. B)RadiotherapyExplanation
Radiotherapy is a treatment for cancer where the cancerous part is exposed to short wave radiation from radioactive material repeatedly at regular intervals. This radiation damages the DNA of cancer cells, preventing them from growing and dividing. Radiotherapy can be delivered externally, using a machine that directs radiation towards the tumor, or internally, by placing radioactive material directly into or near the tumor. It is often used alongside other treatments like surgery or chemotherapy to increase the chances of eliminating cancer cells.Rate this question:
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- 12.
In case of cloning the nucleus is taken from
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A)Oocyte
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B)Ovium
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C)Fertilized egg
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D)Graffian follicle
Correct Answer
A. C)Fertilized eggExplanation
In cloning, the nucleus is taken from a fertilized egg. This is because a fertilized egg contains the complete set of genetic information required for the development of an organism. By removing the nucleus from a fertilized egg and replacing it with the nucleus from another cell, scientists can create a genetically identical copy of the original organism. This process is known as somatic cell nuclear transfer and is commonly used in animal cloning.Rate this question:
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- 13.
Removal or degradation of environmental pollutants or toxic materials by living organisms is called
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A)Bio elements
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B)Bioremediation
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C)Deterioration
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D)None
Correct Answer
A. B)BioremediationExplanation
Bioremediation refers to the process in which living organisms, such as bacteria, fungi, or plants, are used to remove or break down environmental pollutants or toxic materials. These organisms have the ability to metabolize or transform these harmful substances into less harmful forms, thus cleaning up the environment. Bioremediation is an effective and environmentally friendly approach to remediate polluted sites and restore them to their natural state.Rate this question:
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- 14.
A structure within a cell that performs a specific function is called
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A)Protein
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B)Organ system
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C)Organelle
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D)System
Correct Answer
A. C)OrganelleExplanation
An organelle is a structure within a cell that performs a specific function. This can include organelles such as the nucleus, mitochondria, or endoplasmic reticulum, which each have their own specific roles within the cell. Proteins are molecules that are involved in various cellular processes, but they are not structures within the cell. An organ system refers to a group of organs working together to perform a specific function in the body, not within a cell. The term "system" is too general and does not specifically refer to a structure within a cell.Rate this question:
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- 15.
Members of one species inhabiting the same area is called
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A)Community
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B)Population
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C)Habitat
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D)Species
Correct Answer
A. B)PopulationExplanation
A population refers to a group of individuals of the same species that live in the same area and can potentially interact with one another. It is a fundamental ecological concept that helps in understanding the dynamics and characteristics of a particular species in a given habitat. A population can be studied in terms of its size, density, distribution, and other demographic factors. Therefore, the correct answer is b) Population.Rate this question:
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- 16.
A group of similar cells that perform a specific function is
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A)Tissue
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B)Organ
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C)Organelle
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D)System
Correct Answer
A. A)TissueExplanation
A group of similar cells that perform a specific function is called tissue. Tissues are formed when cells with similar structures and functions come together to work collectively. These tissues can be found in various parts of the body and are responsible for carrying out specific tasks. Examples of tissues include muscle tissue, nerve tissue, and epithelial tissue.Rate this question:
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- 17.
Branch of biology that deals with the use of living organisms, systems or processes in manufacturing and service industries is called
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A)Molecular biology
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B)Biotehnology
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C)Parasitology
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D)Fresh water biology
Correct Answer
A. B)BiotehnologyExplanation
Biotechnology is the branch of biology that deals with the use of living organisms, systems, or processes in manufacturing and service industries. It involves the application of biological knowledge and techniques to develop new products, improve existing ones, or solve problems in various industries such as agriculture, medicine, and environmental science. Biotechnology utilizes living organisms or their components to create or modify products, processes, or organisms for specific purposes, making it the correct answer in this context. Molecular biology focuses on the study of biological molecules and their interactions, parasitology deals with the study of parasites, and freshwater biology focuses on the study of organisms in freshwater ecosystems.Rate this question:
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- 18.
Gymnosperms evolved from
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A)Cenozoic era
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B)Mesozoic era
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C)Paleozoic era
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D)Proterozoic era
Correct Answer
A. B)Mesozoic eraExplanation
Gymnosperms evolved from the Mesozoic era. This era, also known as the Age of Reptiles, lasted from about 252 to 66 million years ago. Gymnosperms are a group of plants that include conifers, cycads, and ginkgoes, among others. They were the dominant plants during the Mesozoic era and played a crucial role in shaping the landscape and ecosystems of that time. Gymnosperms are characterized by their ability to reproduce through the production of seeds, which are not enclosed within a fruit.Rate this question:
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- 19.
Fungi and algea evolved from
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A)Mesozoic era
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B)Cenozoic era
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C)Proterozoic era
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D)None
Correct Answer
A. C)Proterozoic eraExplanation
Fungi and algae evolved from the Proterozoic era. The Proterozoic era is a geological era that occurred between 2.5 billion and 541 million years ago. During this time, the Earth experienced significant changes in its atmosphere and climate, which provided favorable conditions for the development of diverse life forms. Fungi and algae are both types of eukaryotic organisms that likely originated during this era and have since diversified and adapted to various environments on Earth.Rate this question:
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- 20.
If aphid attack walnut tree is being controlled by biological method by
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A)Wasp
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B)Sparrows
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C)Ants
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D)None
Correct Answer
A. A)WaspExplanation
The correct answer is a) Wasp. Wasps are natural predators of aphids and are commonly used as a biological control method to manage aphid populations on walnut trees. They lay their eggs inside aphids, which eventually kills the aphids. This helps to reduce the damage caused by aphid infestations and promotes a healthier walnut tree.Rate this question:
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May 19, 2012Quiz Created by
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