Biology Test Preparation Practice

    Matter And Energy Flow Through Different Organizational Levels Of Living Systems

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    Base your answers to questions 3 on the diagram below and on your knowledge of biology. The dia- gram represents a portion of a starch molecule.

    organization and patterns in Life, organic and inorganic compounds, genetics and biotechnology, protein synthesis, structure and functions fig: lenv62016-examw_g11.png

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    Base your answers to questions 10 on the diagram below and your knowledge of biology. The diagram represents an ameba, a single-celled organism, carrying out an essential life process.

    ecology, energy flow and food web fig: lenv12013-exam_g11.png

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    Base your answers to questions 14 on the information below and on your knowledge of biology.

    Hydrothermal Vent Communities

    Scientists discovered a unique hydrothermal ecosystem on the sea floor at hot-water vents thousands of feet below the ocean surface. Organisms in these deep-sea regions have no access to sunlight, so they depend on the heat, methane, and high levels of sulfur-bearing minerals found in the heated fluids in which they live. Scientists were amazed to discover vent communities able to sustain vast amounts of life. The vent organisms depend on bacteria that can use the sulfur-bearing minerals to produce organic materials. These bacteria live on rock surfaces and as free-floating blobs. Some bacteria live within and provide nutrients for an unusual species of giant tubeworms that lacks a digestive system. Snails, shrimp, and clams are among the animals that feed directly on the bacteria. Crabs feed directly on other animals in the vent community.

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

    Blood Doping

    Blood is a fluid tissue, which means that blood cells are suspended in a fluid called plasma. Blood tests are concerned with not only the number of blood cells present, but with the amount of plasma that surrounds the cells.

    The diagram below represents tubes containing blood samples from an athlete before and after blood doping. Blood doping is an illegal practice reportedly used by some athletes a few weeks before an athletic event, and involves removing whole blood from an athlete, separating the oxygen-carrying red blood cells (RBCs), and then freezing them. These RBCs are thawed and returned to the athlete’s body just before the athlete competes. Serious health risks are associated with this practice.

    organization and patterns in Life, cell energetics, cellular respiration and APT fig: lenv12015-exam_g25.png

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    Base your answer to question 16 on the information below and on your knowledge of biology.

    A student measured oxygen and carbon dioxide concentration levels in an aquatic ecosystem during a 24 hour period. The data are represented in the graph below.

    organization and patterns in Life, cell energetics, origin of energy and photosynthesis, organization and patterns in Life, cell energetics, cellular respiration and APT fig: lenv12017-exam_g17.png

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