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.

    Life Processes
    Which of these is FALSE about nutrition in amoeba?
    Nutrition in an amoeba occurs through a process called phagocytosis where the entire organism pretty much engulfs the food it plans on eating up. As amoeba is a unicellular organism, it does not have any specialized organ for the mechanism of nutrition. It directly swallows the whole food and a food vacuole is created. Digestive juices then get secreted in the vacuole and the food is slowly digested. After this, the waste is excreted.
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    Biodiversity Introduction
    First major ‘multicellular’ life is called:
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    Cell Cycle
    A tumor that does not cause serious problems in body is called:
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    Homeostasis
    Which of the following is an example of negative feedback?
    In this choice the response to rising glucose is the release of insulin, which promotes a decrease in blood glucose by causing it to be absorbed from the blood. That is, the response is to oppose the change that initiated the response. This is termed “negative” feedback. The other three choices are examples of positive feedback.
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    Biodiversity Introduction
    Genes are made up of complex chemical compound known as
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    Biology
    Proteins are converted into
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    Cell Cycle
    Which of organs are referred to as gonads?
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    Homeostasis
    What causes the body to maintain a relatively constant internal environment?
    Homeostasis matches the definition in the question.
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    Cell Cycle
    Radial array that originates from each centrosome is called:
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    Reproduction System
    The process of doubling and duplicating the genetic material in the human cells is known as ________ and ________ type of cell division reduces chromosome number to half in sex cells.
    The process of doubling and replicating the genetic material in the human cells is known as DNA replication and meiotic cell division reduces chromosome number to half in sex cells. DNA replication is essential for cell division to take place.
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