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Living Environment - New York Regents August 2013 Exam

   Directions (1–30): For each statement or question, record on the 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 The organisms in a pond and the physical factors
  influencing them best describe
  (1) a population         (3) a biosphere
  (2) an ecosystem         (4) a food chain

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2.

2 Which row in the chart below best describes
  decomposers?
   Row     Method of Nutrition   Recycles
    (1)    autotrophic           nutrients
    (2)    heterotrophic         nutrients
    (3)    autotrophic           energy
    (4)    heterotrophic         energy

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3.

3 Some processes that occur in a cell are listed
  below.
       A. utilize energy
       B. detect changes in the environment
       C. rearrange and synthesize chemical
          compounds
  Which processes will all living organisms use to
  maintain homeostasis?
  (1) A and B, only         (3) C and A, only
  (2) B and C, only         (4) A, B, and C

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4.

4 Which cell structures are correctly paired with
  their functions?
  (1) The mitochondria produce enzymes, and
      ribosomes transport them.
  (2) The ribosomes make proteins, and the
      nucleus stores genetic information.
  (3) The cell membrane makes enzymes, and
      cytoplasm transports them.
  (4) The vacuole stores genetic information, and
      chloroplasts make proteins.

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5.

5 The diagram below represents the region
  between two nerve cells. Cell A releases a
  chemical that travels to and binds with structure
  X on cell B.

Structure X most likely represents
(1) a receptor molecule
(2) an inorganic substance
(3) a ribosome
(4) an antibody

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6.

6 Over the past few thousand years, humans have
  helped to bring about changes in many plant and
  animal species in order to make them more
  useful. Examples include strong workhorses,
  hunting dogs, large-eared corn, and beautiful
  flower varieties. These changes were primarily
  brought about by humans, using the process of
  (1) mitosis              (3) cloning
  (2) selective breeding   (4) natural selection

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7.

7 Certain antibacterial soaps kill 99% of the
  bacteria present on hands. Constant use of these
  soaps could be harmful over time because
  (1) more pathogens may be resistant to the soap
  (2) microbes prevent viral diseases
  (3) large populations of pathogens are beneficial
      to the hands
  (4) the soap stimulates skin cell division

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8.

8 Which factor would cause two specialized tissues
  that contain identical chromosomes to function
  differently?
  (1) Specific sections of DNA molecules in the
      chromosomes are activated.
  (2) All of the sections of DNA molecules in the
      chromosomes are activated.
  (3) Specific sections of the amino acid molecules
      in the cytoplasm are activated.
  (4) All of the amino acid molecules in the
      cytoplasm are activated.

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9.

9 Some variation must be present in a population
  in order for natural selection to take place.
  These variations arise from mutations in the
  DNA and
  (1) sorting of chromosomes during sexual
      reproduction
  (2) combining of chromosomes during organ
      development
  (3) changing of chromosomes during cloning
  (4) removal of chromosomes during selective
      breeding

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10.

10 The diagram below represents a segment of a
   gene on two chromosomes.
    Normal gene    A    T    A   C    C    T
    Mutated gene   A    T    G   C    C    T
   The change in the gene sequence is an example
   of
   (1) an insertion        (3) a substitution
   (2) a deletion          (4) a replication

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11.

11 In a certain species of insect, some individuals
   have flattened white disks on their bodies that
   protrude and interlock, resembling an orchid
   flower. This adaptation provides the insect with a
   better opportunity to capture its prey. If
   environmental conditions remain unchanged, it
   is most likely that, in future generations, the proportion of the population with this adaptation will
   (1) increase, only
   (2) decrease, only
   (3) increase, then decrease
   (4) decrease, then increase

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12.

12 Which structure is correctly paired with its
   function?
   (1) ovary — provides milk for newborns
   (2) testis — development of sperm
   (3) placenta — storage of released eggs
   (4) uterus — produces estrogen

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13.

13 The fruit fly represented in the diagram below
   has unusual, curled wings that formed after
   exposure to radiation.

In order for the fly to pass this trait on to its
offspring, a change had to occur in
(1) the blood cells of the fly
(2) the gametes of the fly
(3) all the body cells of the fly
(4) the muscles of the fly

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14.

14 In a population of birds, the percentage of
   individuals having a certain gene changes from
   20% to 60% over the span of several hundred
   years. This situation will most likely affect the
   rate of
   (1) biological evolution
   (2) asexual reproduction
   (3) gene mutation
   (4) ecological succession

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15.

15 The finite resources of Earth are often affected
   by increasing human consumption. These finite
   resources are
   (1) not renewable over a short period of time
   (2) the products of rapid human population growth
   (3) the result of deforestation
   (4) needed to degrade ecosystems

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