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Living Environment - New York Regents August 2010 Exam

   Directions (1–30): For each statement or question, write on your separate answer sheet the number of the
word or expression that, of those given, best completes the statement or answers the question.

Formats View Examination Paper with Answers Solve Examination Paper Questions Review
: Multiple choice

Your Performance  

1.

1 An ecosystem that has almost the same number
  and type of organisms for many years is exhibiting
  (1) feedback
  (2) global instability
  (3) environmental change
  (4) equilibrium

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2.

2 Which system is correctly paired with its function?
  (1) immune system—intake and distribution of
      oxygen to cells of the body
  (2) excretory system—remove potentially
      dangerous materials from the body
  (3) digestive system—transport energy-rich
      molecules to cells
  (4) circulatory system—produce building blocks
      of complex compounds

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3.

3 Which statement concerning the reproductive
  cells in the diagram below is correct?

(1) The cells are produced by mitosis and
    contain all the genetic information of the
    father.
(2) If one of these cells fertilizes an egg, the
    offspring will be identical to the father.
(3) Each of these cells contains only half the
    genetic information necessary for the formation
    of an offspring.
(4) An egg fertilized by one of these cells will
    develop into a female with the same characteristics as the mother.

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4.

4 Which set of functions is directly controlled by
  the cell membrane?
  (1) protein synthesis, respiration, digestion of
      food molecules
  (2) active transport, recognition of chemical
      messages, protection
  (3) enzyme production, elimination of large
      molecules, duplication of DNA codes
  (4) release of ATP molecules, regulation of cell
      reproduction, food production

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5.

5 When a new viral infection appears in a population,
  scientists usually try to develop a vaccine against
  the virus. Which substances would most likely be
  contained in the new vaccine?
  (1) live bacteria that ingest viruses
  (2) white blood cells from an infected individual
  (3) weakened viruses associated with the infection
  (4) a variety of microbes that will attack the virus

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6.

6 The human heart and lungs contain cells that
  (1) produce a hormone involved in respiration
  (2) have the same genetic information but
      perform different specialized functions
  (3) use one part of the genetic code to synthesize
      all enzymes needed by the cell
  (4) contain different numbers of DNA molecules

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7.

7 The diversity of organisms present on Earth is
  the result of
  (1) ecosystem stability (3) natural selection
  (2) homeostasis          (4) direct harvesting

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8.

8 Some stages in the development of an organism are represented in the diagram below.

Which levels of biological organization do stages 2 and 7 have in common?
(1) cells and organs                                       (3) tissues and organelles
(2) cells and tissues                                      (4) organelles and cells

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9.

9 Plants in species A cannot fight most fungal infections. Plants in species B make a protein that kills many
  fungi. One possible way for humans to produce species A plants with the ability to synthesize this protein
  would be to
  (1) mutate fungal DNA and introduce the mutated DNA into species B using a virus
  (2) add DNA from species B into the soil around species A
  (3) insert the gene for the protein from species B into a chromosome in species A
  (4) cross species A and a fungus to stimulate the synthesis of this protein

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10.

10 The diagram below shows a process that affects chromosomes during meiosis.

This process can be used to explain
(1) why some offspring are genetically identical to their parents
(2) the process of differentiation in offspring
(3) why some offspring physically resemble their parents
(4) the origin of new combinations of traits in offspring

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11.

11 Which phrase, if placed in box X, would correctly complete the flowchart shown below?

(1)   Increased use of starch in root cells
(2)   Increased concentration of glucose in leaf cells
(3)   Decreased ATP in root cells
(4)   Decreased concentration of oxygen in leaf cells

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12.

12 The diagram below represents levels of organization within a cell of a multicellular organism.

The level represented by X is composed of
(1) four types of base subunits
(2) folded chains of glucose molecules
(3) twenty different kinds of amino acids
(4) complex, energy-rich inorganic molecules

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13.

13 Scientists have discovered that the Oklahoma
   salamander, Eurycea tynerensis, develops into
   its adult form in streams where the streambeds
   are made of fine, tightly packed gravel.
   Salamanders living in streams with streambeds
   made of large, loosely packed gravel remain
   immature. This situation is an example of
   (1) the production of gametes
   (2) faulty genes found in aquatic organisms
   (3) development influenced by the environment
   (4) the production of new organisms by environmental engineering

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14.

14 Which statement is best supported by the theory
   of evolution?
   (1) Genetic alterations occur every time cell
       reproduction occurs.
   (2) The fossil record provides samples of every
       organism that ever lived.
   (3) Populations that have advantageous characteristics will increase in number.
   (4) Few organisms survive when the environment remains the same.

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15.

15 A chemical known as 5-bromouracil causes a
   mutation that results in the mismatching of
   molecular bases in DNA. The offspring of organisms
   exposed to 5-bromouracil can have mismatched
   DNA if the mutation occurs in
   (1) the skin cells of the mother
   (2) the gametes of either parent
   (3) all the body cells of both parents
   (4) only the nerve cells of the father

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