Biology

Biology Multiple Choice Questions and Answers (MCQ) PDF: Quizzes & Practice Tests with Answer Key. This section Biology basic concepts, theory and objective tests.

This section covers following topic MCQs: Bioenergetics, biological molecules, cell biology, coordination and control, enzymes, fungi, recyclers kingdom, gaseous exchange, growth and development, kingdom Animalia, kingdom plantae, kingdom prokaryotae, kingdom protoctista, nutrition, reproduction, support and movements, transport biology, variety of life, and homeostasis etc.

    Heredity and Evolution
    In the process of natural selection, evolution is the:
    Natural selection is the phenomenon wherein nature selects organisms having traits favourable to the environment. The organisms exhibit different characteristics due to different genotypes (variation). If these characteristics are favoured by the natural environment, the organisms with these variations survive and propagate, and may form different species. Thus, evolution is the outcome of natural selection.
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    Biology
    The source of information for making proteins is generally stored in
    The information to make proteins is stored in an organism`s DNA. Each protein is coded for by a specific section of DNA called a gene. A gene is the section of DNA required to produce one protein.
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    Biology
    Pituitary gland, pineal gland and hypothalamus are located in which part of the human body?
    The pituitary gland or hypophysis is a small gland about 1 centimeter in diameter or the size of a pea. It is nearly surrounded by bone as it rests in the sella turcica, a depression in the sphenoid bone. The gland is connected to the hypothalamus of the brain by a slender stalk called the infundibulum.
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    Cell Cycle
    Building material of chromosomes is termed as:
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    Homeostasis
    The term “homeostasis” is described by which one of the following statements? The body’s ability to:
    Choice A refers to positive feedback. Choice C refers to negative feedback. Choice B is an example of homeostasis.
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    Cell Cycle
    Which of following is longest phase of cell cycle?
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    Biology
    Which of the following instruments is used to measure the blood pressure of the Human body?
    To measure blood pressure, your doctor uses an instrument call a sphygmomanometer, which is more often referred to as a blood pressure cuff. The cuff is wrapped around your upper arm and inflated to stop the flow of blood in your artery.
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    Heredity and Evolution
    The technique of establishing evolutionary relationships based on changes accumulated in the DNA is known as _______ .
    Molecular phylogeny is the technique that employs comparison of changes accumulated in the DNA of an organism over generations to establish evolutionary relationships. This approach is based on the idea that organisms which are more distantly related will accumulate a greater number of differences in their DNA.
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    Cell Cycle
    Formation of cleavage furrow is first sign of
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    Heredity and Evolution
    The set of rules that determine the process by which traits and characteristics are reliably inherited is known as:
    The set of rules that determine the process by which traits and characteristics are reliably inherited is known as heredity. Heredity is also explained as ‘tendency of the offspring to exhibit certain characters of parents or ancestors’.
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