Regents Living Environment Test Preparation Practice

    Regents Test, Full Exam Practice Online: living environment August 2017

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    Base your answers to questions 36 and 37 on the information and data table below and on your knowledge of biology.

    A student wanted to investigate the effect of light on the rate of ripening of tomatoes. She set up four pots of the same size with identical amounts of soil, water, and type of tomato plants. Each plant was exposed to a different intensity of light as shown in the table below.

    scientific inquiry, data organization, plot and interpretation fig: lenv82017-examw_g12.png

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    Base your answers to questions 38 and 39 on the diagram below and on your knowledge of biology. The diagram illustrates activities taking place in the body of a human.

    Antibodies

    homeostasis and immunity, vaccinations, homeostasis and immunity, immune response fig: lenv82017-examw_g14.png

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    Base your answers to questions 42 and 43 on the information and diagram below and on your knowledge of biology.

    The setup below shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail. Tube 3 contains a live green water plant. Tube 4 contains both a live green water plant and a live snail.

    organization and patterns in Life, cell energetics, cellular respiration and APT fig: lenv82017-examw_g16.png

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    Base your answers to questions 44 through 47 on the information and data table below and on your knowl- edge of biology.

    The concentration of a specific antibody in the blood of an individual was measured at various times over a period of 50 days. The results obtained are shown in the data table below.

    scientific inquiry, data organization, plot and interpretation fig: lenv82017-examw_g17.png

    Directions: Using the information in the data table, construct a line graph on the grid, following the directions below.

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    Base your answers to questions 48 and 49 on the information and diagram below and on your knowledge of biology.

    If a Chihuahua with short hair has a hidden gene for long hair, it can produce both long-haired and short-haired puppies when bred to a Chihuahua with long hair.

    genetics and biotechnology, applications of biotechnology fig: lenv82017-examw_g19.png

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    Base your answers to questions 50 and 51 on the diagram below and on your knowledge of biology. The diagram represents a technique used by scientists today to maintain the genetic makeup of an organism.

    reproduction and development, ansexual reproduction, genetics and biotechnology, characteristics of traits transferred to offsprings fig: lenv82017-examw_g20.png

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    Base your answers to questions 52 and 53 on the information below and on your knowledge of biology.

    Breast Cancer Research

    Most deaths that are a result of breast cancer occur because the cancer cells metastasize (spread) from the breast to other organs. As they metastasize, cancer cells travel through the bloodstream.

    MicroRNA molecules are involved in both the movement and control of metastasized cells. One microRNA, known as miR-7, shuts down a protein that helps cancer cells travel through the blood.

    Understanding how miR-7 interacts with cancer cells may lead to new treatments for certain types of cancer. Since certain levels of miR-7 expression can also stimulate the development of cancer cells, the use of miR-7 to treat cancer will have to be studied in more detail. Researchers are hoping that eventually levels of miR-7 will be used to diagnose, treat, and prevent the spread of cancer in an individual.

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    Base your answers to questions 54 and 55 on the information and diagram below and on your knowledge of biology.

    Each body cell contains the same genetic information, but can differ in appearance and size. The diagram below shows three different types of cells found in the human body.

    organization and patterns in Life, cell structure and functions fig: lenv82017-examw_g22.png

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    Base your answers to questions 56 through 58 on the information below and on your knowledge of biology.

    ecology, relationships among organisms fig: lenv82017-examw_g23.png

    Federal wildlife officials plan to dispatch armed bird specialists into forests of the Pacific Northwest starting this fall to shoot one species of owl to protect another that is threatened with extinction. …

    …“If we don’t manage barred owls, the probability of recovering the spotted owls goes down significantly,” said Paul Henson, Oregon state supervisor for Fish and Wildlife. The agency’s preferred course of action calls for killing 3,603 barred owls in four study areas in Oregon, Washington and northern California over the next four years. …

    …Mr. Henson said unless barred owls are brought under control, the spotted owl in coming decades might disappear from Washington’s northern Cascade Range and Oregon’s Coast Range, where the barred owl incursion [takeover] has been greatest.

    The northern spotted owl was listed as a threatened species in 1990. Barred owls are bigger, more aggressive and less picky about food. Barred owls now cover the spotted owl’s range, in some places outnumbering them as much as 5-to-1.

    Source: Associated Press, 7/26/13

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    Base your answer to question 59 on the information below and on your knowledge of biology.

    The 1990 Federal Clean Air Act requires New York State to conduct an emissions test on most gasoline-powered automobiles in order to help reduce harmful emissions. Vehicles that fail this test must be repaired and pass inspection before they can be driven on the road. Some people did not support this legislation.

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    Base your answers to questions 60 through 63 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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    Base your answers to question 64-66 on the information below and on your knowledge of biology.

    Secondhand Smoke and Estrogen

    A fertility researcher conducted a study of pregnant women. The researcher’s hypothesis was that the estrogen levels of pregnant women who were exposed to daily secondhand cigarette smoke would be higher than estrogen levels of pregnant women not exposed to daily secondhand smoke.

    The researcher measured the estrogen levels of eight pregnant women each week throughout their pregnancy. Four of the women lived in houses with heavy smokers, the other four did not. The women’s ages varied from 19 to 42 years old. Six of the women were pregnant with girls, one was pregnant with a boy, and one was pregnant with twin boys. The research was submitted for peer review.

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    Base your answers to questions 67 through 69 on the information and passage below and on your knowledge of biology.

    Snowy Owls Move to the South

    Snowy owls are large white birds that normally inhabit the cold northern regions of Canada. Recently, scientists and birdwatchers have sighted the snowy owls much farther south than usual.

    When snowy owls are in northern areas, they feed on lemmings (small rodents). When lemmings are not available, as in the areas further south, the owls will seek out mice or rabbits as their food source.

    Several snowy owls migrated into an area represented by the food web below.

    ecology, materials cycle through ecosystems fig: lenv82017-examw_g25.png

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    Base your answers to questions 70 through 72 on the information below and on your knowledge of biology.

    Pocket Mice

    Pocket mice are small rodents that feed mainly at night and are preyed upon by owls, hawks, and snakes. Scientists studied pocket mice living on dark volcanic rock in both New Mexico and fifty miles away in Arizona. They recorded their data in the chart below.

    scientific inquiry, access result and draw conclusion fig: lenv82017-examw_g26.png

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    Base your answers to questions 76 through 78 on the diagram below that shows variations in the beaks of fi nches in the Galapagos Islands and on your knowledge of biology.

    labs, lab, the beaks of finches fig: lenv82017-examw_g29.png

    from: Galapagos: A Natural History Guide

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    Base your answers to questions 80 through 82 on the information below and on your knowledge of biology.

    Progressive Resistance Exercise

    Progressive resistance exercise (PRE) is a method of increasing the ability of muscles to generate force. The principles of PRE for increasing force production in muscles have remained unchanged for almost 60 years. These principles are (1) to perform a small number of repetitions until fatigued, (2) to allow sufficient rest between exercises for recovery, and

    (3) to increase the resistance as the ability to generate force increases. Traditionally, PRE has been used by young, healthy adults to improve athletic performance.

    A student decided to incorporate PRE into his exercise program. He did not know how to determine when he had allowed sufficient rest between exercises for recovery. He hypothesized that waiting for his pulse to return to normal would probably be a good indication.

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