Regents Living Environment Test Preparation Practice

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

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    Base your answers to questions 37 through 39 on the diagrams below and on your knowledge of biology. The diagrams represent a single-celled organism and a multicellular organism.

    organization and patterns in Life, levels of organization for structure and function fig: lenv62017-exampcw_g18.png

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    Base your answers to questions 40 and 41 on the information and diagram below and on your knowledge of biology.

    A student used a microscope like the one represented below to observe cell division in onion cells.

    labs, lab, appendix A, laboratory check list fig: lenv62017-exampcw_g19.png

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

    Illinois Greater Prairie Chicken on the Rise

    As pioneers moved west in the mid-1800s, the greater prairie chicken population in Illinois was estimated to number in the millions. Since then, their population has drastically declined.

    Evidence of the rapidly declining population was obtained from studying the number of eggs that hatched over several years. In Jasper County, Illinois, the number of prairie chickens fell from 2,000 to less than 50 in under 35 years. Researchers compared the DNA from feather samples from the living Illinois chickens to the DNA from feather samples dating from the year 1930 found in a museum. It was found that the living Illinois chicken population had a very low level of genetic diversity.

    In 1992, researchers attempted to increase genetic variation by transporting more than 500 healthy prairie chickens into Illinois from the states of Minnesota, Kansas, and Nebraska. The data table below shows the changes in the percent of eggs that hatched from samples taken in different years. Researchers documented that this increase in the percent of eggs that hatched was not influenced by environmental events.

    labs, lab, appendix A, laboratory check list, scientific inquiry, data organization, plot and interpretation fig: lenv62017-exampcw_g22.png

    Directions: Using the information given, construct a bar graph on the grid following the directions below.

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    Base your answers to questions 48 and 49 on the diagram below and on your knowledge of biology. The diagram shows the evolutionary history of several plant species.

    evolution, evolutionary relationships and cladogram, evolution, evolutionary relationships and cladogram fig: lenv62017-exampcw_g25.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 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 answer to question 54-55 on the information below and on your knowledge of biology.

    Indian blue peacocks live in dense forests and scrubland. Males use their colorful eye-spotted tail feathers and strutting display along with a loud mating call to attract females. This behavior, known as a hoot-dash, is made by the male before dashing toward a female to mate. Few species of other animals use loud courtship calls as the call attracts predators and uses energy.

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    Base your answers to questions 56 and 57 on the information below and on your knowledge of biology.

    The placenta secretes progesterone and estrogen during pregnancy. Progesterone is responsible for the following functions:

    • maintains the lining of the uterus

    • inhibits (interferes with) contractions of the uterus

    • inhibits the production and release of eggs

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    Base your answers to questions 58 and 59 on the information below and on your knowledge of biology.

    “Cancer is a disease of genes gone wrong. When certain genes mutate, they make cells behave in odd ways. The cells divide swiftly, they hide from the immune system that could kill them and they gain the nourishment they need to develop into tumors.…”

    Source: Carl Zimmer, NY Times, February 6, 2014

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    Base your answers to questions 61 through 63 on the information below and on your knowledge of biology.

    In an experiment to test the effectiveness of a new vaccine, 50 rats received an injection of equal doses of the vaccine and 50 other rats received an injection of equal doses of a weak salt solution. Two months later, all of the rats received injections that contained equal doses of live, disease-causing organisms.

    The experimental results are shown in the chart below.

    scientific inquiry, data organization, plot and interpretation, scientific inquiry, data organization, plot and interpretation fig: lenv62017-exampcw_g28.png

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

    Saving Florida Oranges

    A disease that affects orange trees has led to the destruction of numerous orange trees in Florida. Orange growers have unsuccessfully tried to stop the spread of the disease by cutting down infected trees and using a variety of pesticides on the insects that spread the disease. The growers fear that if nothing further is done, entire crops could be wiped out in the near future. In hopes of saving Florida’s orange industry, scientists are attempting to alter the DNA of orange trees by inserting DNA, that codes for disease resistance, from a different plant species.

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    Base your answers to questions 68 through 72 on the information below and on your knowledge of biology.

    Nature Will Have to Clean Up Hawaii Molasses Leak That Killed Thousands of Fish

    A massive spill of thick molasses has turned Honolulu Harbor into a watery wasteland where thousands of fish have been suffocated – a disaster that officials say Mother Nature will have to clean up.

    “There’s nothing alive there at all,” diver Roger White told NBC affiliate KHNL after making a seven-minute video of dead sea life blanketing the bottom of the harbor.…

    …“Unlike with an oil spill, it’s a sugar product so it will dissipate on its own,” Matson spokesman Jeff Hull told NBC News on Thursday. “There’s not an active cleanup.”

    “The molasses is not toxic but it’s heavier than water so it’s spreading around on the sea floor, displacing the oxygen-rich water down there, and the fish are suffocating,” said Keith Korsmeyer, a professor of biology at Hawaii Pacific University.

    The die-off also could lure predators like sharks, barracuda and eels to the harbor and neighboring Keehi Lagoon, experts warned.…

    …Korsmeyer said marine life would probably repopulate the harbor, after the low- oxygen water moves out, but that could take months or even years.…

    Source: http://www.nbcnews.com/news/other/nature-will-have-clean-

    hawaii-molasses-leak-killed-thousands-fish-f8C11137030

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    Base your answers to questions 75 through 77 on the information below and on your knowledge of biology.

    Unique populations of giant tortoises live in the Galapagos Islands. This is the same group of islands where Darwin studied his famous finches. It is thought that the original ancestors of today’s giant tortoises came from the mainland of South America. These animals left and drifted in the ocean to the islands where they began to live, reproduce, and evolve. Each of the islands has a different habitat. Each species varies in shell shape and body structure. Information about two of these species of giant tortoises and their habitats is found in the table below.

    labs, lab, the beaks of finches fig: lenv62017-exampcw_g30.png

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

    A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students continued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

    labs, lab, making connections fig: lenv62017-exampcw_g31.png

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    Base your answer to question 83 on the information below and on your knowledge of biology.

    A student added glucose indicator to a beaker of an unknown liquid. Starch indicator was added to a different beaker containing an equal amount of the same unknown liquid. The color of the indicator solutions before they were added to the beakers and the color of the contents of the beakers after adding the indicator solutions are recorded in the chart below.

    labs, lab, diffusion through a membrane fig: lenv62017-exampcw_g32.png

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    Base your answer to question 85 on the information and diagram below and on your knowledge of biology.

    An unknown sample of DNA found at a crime scene was compared to DNA samples taken from three individuals. The results of the technique used to compare the samples are represented below.

    labs, lab, relationships and biodiversity fig: lenv62017-exampcw_g33.png

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