Regents Living Environment Test Preparation Practice

    Regents Test, Full Exam Practice Online: living environment June 2015

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    Base your answers to questions 42 and 43 on the diagram below, which represents an ameba engulfing bacteria, and on your knowledge of biology.

    ecology, energy flow and food web fig: lenv62015-examw_g22.png

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    Base your answers to questions 44 through 48 on the information and data table below and on your knowledge of biology.

    The Enzyme Catalase

    Catalase is an enzyme found in nearly all living organisms that breathe or are exposed to oxygen. According to recent scientific studies, low levels of catalase may play a role in the graying process of human hair. The body naturally produces hydrogen peroxide, and catalase breaks it down into water and oxygen. If there is a dip in catalase levels, hydrogen peroxide cannot be broken down. This causes hydrogen peroxide to bleach hair from the inside out. Scientists believe this finding may someday be used in anti-graying treatments for hair.

    A pharmaceutical company, investigating ways to prevent hair from turning gray, took tissue samples from two different individuals. Both individuals were the same age. Each of the samples was placed in a solution of hydrogen peroxide. The volume of oxygen gas produced was measured every 5 minutes for 25 minutes. The data the company collected are shown below.

    scientific inquiry, data organization, plot and interpretation fig: lenv62015-examw_g25.png

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

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    Base your answers to questions 49 through 52 on the information and graph below and on your knowledge of biology.

    An investigation was carried out to determine the effect of drinking an excessive amount of water on urine flow. A subject drank 1 liter of water in 5 minutes, and then urine output was measured. The graph shows how the human adult kidneys responded to regulate water balance in the body. Urine output was measured every 10 minutes for a little over 3 hours. Normal output for an average adult is approximately 0.5–1 mL/min.

    homeostasis and immunity, maintainance of homeostasis, stimuli and feedback fig: lenv62015-examw_g27.png

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    Base your answers to questions 53 through 55 on the information and data table below and on your knowledge of biology.

    The data table summarizes the changes that occurred to farmland in the years immediately following its abandonment. The land is located in a very stable ecosystem. It was abandoned after years of overuse and weathering, which resulted in the depletion of soil nutrients.

    ecology, organization of ecosystems  fig: lenv62015-examw_g28.png

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    Base your answer to question 56-58 on the information and photograph below and on your knowledge of biology.

    The photograph below is part of an advertisement used by a company selling solar panels. The company claims that their panels, like plants, provide clean, renewable energy. They also claim that using solar panels will have a positive effect on the biosphere by reducing global warming.

    organization and patterns in Life, cell energetics, origin of energy and photosynthesis, human influences on the environment, human efforts on reverse of the damage to ecosystems, human influences on the environment, human efforts on reverse of the damage to ecosystems, organization and patterns in Life, cell energetics, origin of energy and photosynthesis fig: lenv62015-examw_g29.png

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    Base your answers to questions 59 and 60 on the information below and on your knowledge of biology

    Fungi are interesting organisms that interact with humans in many ways. Yeasts are fungi used in the food industry to produce products such as bread and certain beverages. Some fungi are valuable in medicine. For example, the drug cyclosporine, which is capable of suppressing the response of the immune system to foreign antigens, and the antibiotic penicillin are both products from fungi. Other fungi are less welcomed by humans. The irritation of athlete’s foot is caused by a fungus, and a number of allergies are caused by reproductive spores released by fungi.

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    Base your answers to questions 61 and 62 on the information below and on your knowledge of biology.

    Female mosquitoes need a meal of blood from a person or other animal in order to produce eggs. It has been discovered that mosquitoes have cells on their antennae that can detect the insect repellent known as DEET. The repellent is not harmful to mosquitoes, but when mosquitoes detect DEET, they will not land on the surface where the DEET has been applied. This protects people from being bitten by mosquitoes.

    Recently, scientists found some mosquitoes that are resistant to DEET because they do not detect its presence. They bred these mosquitoes and eventually produced a population consisting of about 50% DEET-resistant insects.

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    Base your answers to questions 63 through 67 on the passage below and on your knowledge of biology.

    Ocean-dwelling (marine) iguanas and land iguanas inhabit the Galapagos Islands. Some scientists believe that both types of iguanas diverged from a common ancestor. Marine iguanas eat algae. Land iguanas feed on cacti. Algae are more abundant in the ocean than cacti are on the islands. Both species lay their eggs in the sand.

    Rats, cats, and goats have been introduced to the islands by humans. Rats feed on iguana eggs, cats eat baby iguanas, and goats eat cacti.

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    Base your answer to question 68-72 on the information and diagram below and on your knowledge of biology.

    The presence of air is believed to be important for root growth in bean plants. The apparatus available to conduct an investigation is shown below. There are enough bottles and other materials to have multiple setups. Air (for aeration) can be bubbled into the bottle through the rubber tube.

    scientific inquiry, hypothesis and experiment design, labs, lab, appendix A, laboratory check list fig: lenv62015-examw_g30.png

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    Base your answers to questions 75 and 76 on the information and data table below and on your knowledge of biology.

    A group of students obtained the following data while trying to determine the effect of exercise on pulse rate.

    labs, lab, making connections fig: lenv62015-examw_g32.png

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    Base your answers to questions 80 and 81 on the diagram below and on your knowledge of biology. The diagram represents the results of paper chromatography performed on extracts from five organisms.

    labs, lab, relationships and biodiversity fig: lenv62015-examw_g34.png

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    Base your answers to questions 82 through 84 on the diagram below and on your knowledge of biology. The diagram shows variations in the beaks of finches in the Galapagos Islands.

    labs, lab, the beaks of finches fig: lenv62015-examw_g35.png

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