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Living Environment - New York Regents January 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 Which type of organism can obtain energy
  directly from any of the other organisms in an
  ecosystem?
  (1) herbivore            (3) producer
  (2) decomposer           (4) carnivore

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  Half-n-half Clue
 

2.

2 Which structures are listed in order from the
  least complex to the most complex?
  (1) plant cell, leaf, chloroplast, rose bush
  (2) chloroplast, plant cell, leaf, rose bush
  (3) chloroplast, leaf, plant cell, rose bush
  (4) rose bush, leaf, plant cell, chloroplast

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  Half-n-half Clue
 

3.

3 The ameba represented in the diagram below is
  a single-celled organism.

Which two processes are most closely associated
with structure A?
(1) insertion and deletion
(2) nervous regulation and circulation
(3) active transport and diffusion
(4) replication and photosynthesis

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  Half-n-half Clue
 

4.

4 The virus that causes bird flu can attach to the
  cells of the lower part of the respiratory system
  in humans, but not to the cells of the upper part
  of the respiratory system. The most likely reason
  for this is that these two groups of cells have
  different
  (1) DNA codes in their nuclei
  (2) enzymes in their mitochondria
  (3) amounts of water in their cytoplasm
  (4) receptor molecules on their membranes

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  Half-n-half Clue
 

5.

5 A piece of refrigerated, cooked meat will remain
  safe to eat for a longer period of time than a
  refrigerated piece of raw meat of similar size.
  Which statement is a valid inference based on
  this information?
  (1) Cooking meat kills many bacteria and fungi.
  (2) Cool temperatures stimulate the growth of
      microbes on raw meat.
  (3) Raw meat cannot be preserved.
  (4) Cooked meat contains antibodies that
      destroy decomposers.

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  Half-n-half Clue
 

6.

6 Some bloodsucking insects insert their mouthparts directly into a blood vessel and withdraw
  blood. Other bloodsucking insects have mouthparts that cut through the skin and blood vessels
  and produce a small pool of blood from which
  they feed. Both mouthpart types are specialized
  for
  (1) autotrophic nutrition
  (2) heterotrophic nutrition
  (3) regulation
  (4) excretion

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  Half-n-half Clue
 

7.

7 If the ribosomes of a cell were destroyed, what
  effect would this most likely have on the cell?
  (1) It would stimulate mitotic cell division.
  (2) The cell would be unable to synthesize
      proteins.
  (3) Development of abnormal hereditary features
      would occur in the cell.
  (4) Increased protein absorption would occur
      through the cell membrane.

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8.

8 Which substances play an important role in
  communication between cells in a multicellular
  organism by acting as chemical messengers?
  (1) fats                 (3) minerals
  (2) antibiotics          (4) hormones

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  Half-n-half Clue
 

9.

9 The diagram below illustrates asexual reproduction
  in yeast.

Yeast produce offspring that usually have
(1) genes that are different from those of the
    parent
(2) genes that are identical to those of the parent
(3) half of the genetic information of the parent
(4) organelles that are not found in the parent

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  Half-n-half Clue
 

10.

10 The molecule represented below is found in
   living things.

Which statement describes one characteristic of
this molecule?
(1) It is the template for the replication of
    genetic information.
(2) Organic catalysts are made up of these
    molecules.
(3) It is different in each cell of an organism.
(4) Cell membranes contain many of these
    molecules.

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  Half-n-half Clue
 

11.

11 Which reproductive pattern would be associated
   with a species that is most likely to undergo
   rapid evolutionary change?
   (1) asexual reproduction with a short reproductive
       cycle
   (2) sexual reproduction with a short reproductive
       cycle
   (3) asexual reproduction with a long reproductive
       cycle
   (4) sexual reproduction with a long reproductive
       cycle

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  Half-n-half Clue
 

12.

12 If a gene is inserted into the DNA of a bacterial
   cell, every cell produced by that cell will have
   (1) DNA that is different from that of the other
       cells produced
   (2) a 50% chance of having a copy of the inserted
       gene
   (3) a copy of the inserted gene
   (4) a new type of DNA base

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  Half-n-half Clue
 

13.

13 The shape of a protein is most directly determined by the
   (1) amount of energy available for synthesis of
       the protein
   (2) kind and sequence of amino acids in the
       protein
   (3) type and number of DNA molecules in a cell
   (4) mistakes made when the DNA is copied

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14.

14 Researchers have found that formaldehyde and
   asbestos can alter DNA base sequences. Based
   on this research, the use of these chemicals has
   been greatly reduced because they
   (1) may act as fertilizers, increasing the growth
       of algae in ponds
   (2) have been replaced by more toxic
       compounds
   (3) are capable of causing mutations in humans
   (4) interfere with the production of antibiotics
       by white blood cells

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15.

15 When the adaptive characteristics of a species
   are insufficient to allow its survival, that species
   is likely to
   (1) mate with other species
   (2) produce a beneficial mutation
   (3) form a fossil
   (4) become extinct

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  Half-n-half Clue
 
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