Regents Living Environment Test Preparation Practice

    Enzymes Hormones Receptor And Antibodies

    Base your answers to questions 1 on the information below and on your knowledge of biology.

    The Venus flytrap is a plant that uses specialized leaves in order to capture and digest small insects.

    ecology, energy flow and food web fig: lenv-v202-exam_g10.png

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    Base your answers to questions 12 on the diagram below and on your knowledge of biology. The diagram illustrates the steps in a process that occurs in the cells of many organisms.

    organization and patterns in Life, Enzymes, hormones, receptor, and antibodies fig: lenv62017-exampcw_g24.png

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    Base your answers to questions 13 on the diagram below and on your knowledge of biology. The diagram represents a human enzyme.

    organization and patterns in Life, Enzymes, hormones, receptor, and antibodies fig: lenv12019-examw_g20.png

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    Base your answers to questions 15 on the information below and on your knowledge of biology.

    Enzyme Investigation

    An enzyme was isolated from digestive juices taken from the small intestine. An experiment was set up to test the ability of the enzyme to break down protein. Two test tubes, labeled A and B, were placed in a hot water bath at 37°C, human body temperature.

    Test tube A contained only protein and test tube B contained protein and the enzyme. The chart below shows the set-up.

    organization and patterns in Life, organic and inorganic compounds fig: lenv82017-examw_g24.png

    After two hours, the contents of both test tubes were analyzed. Test tube A showed only the presence of protein. Test tube B showed the presence of the end products of protein digestion, indicating the enzyme had successfully broken down the protein.

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