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Living Environment - New York Regents August 2012 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 cell represented below produces oxygen.

Which structure allows the passage of this oxygen
to the environment?
(1) A                     (3) C
(2) B                     (4) D

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2.

2 The diagram below represents a cell and several
  molecules. The number of molecules shown
  represents the relative concentration of the
  molecules inside and outside of the cell.

Molecule B could enter the cell as a direct result
of
(1) digestion
(2) diffusion
(3) active transport
(4) enzyme production

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3.

3 Which two terms are considered to be opposite
  processes?
  (1) photosynthesis and autotrophic nutrition
  (2) cloning and mitosis
  (3) digestion and synthesis
  (4) dynamic equilibrium and homeostasis

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4.

4 Which statement concerning cell communication
  is correct?
  (1) DNA codes for certain molecules that
      become cell receptors involved in cell
      communication.
  (2) Cells produce ATP molecules, which
      become cell receptors for communication.
  (3) Cells build new cell parts, which function as
      communication genes.
  (4) Certain proteins use cell communication to
      build new cell parts made of DNA.

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5.

5 A towel placed on a lawn for a length of time can
  cause the grass beneath it to lose its green color.
  The most probable explanation for this is that
  darkness
  (1) affects the expression of certain genes in the
      grass
  (2) causes a mutation in the plants
  (3) affects the structure of cell membranes in
      the grass
  (4) causes plants to switch to heterotrophic
      nutrition

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6.

6 Which sequence correctly represents the
  arrangement of structures containing genetic
  material, from the largest to the smallest size?
  (1) chromosome → gene → nucleus
  (2) nucleus → chromosome → gene
  (3) gene → chromosome → nucleus
  (4) gene → nucleus → chromosome

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7.

7 The DNA of a fly and the DNA of a gorilla are
  made up of subunits that are
  (1) arranged in the same order in both species
  (2) arranged in chains of the same length in both
      species
  (3) different bases in each of the two species
  (4) in different sequences in each of the two
      species

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8.

8 The diagram below represents one process that
  might occur in cells.

Which process is represented in the diagram?
(1) cell reproduction    (3) mutation
(2) meiosis              (4) gene replication

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9.

9 The way a protein molecule is folded determines
  the shape of the molecule, which determines the
  (1) function of that protein
  (2) structure of ATP containing that protein
  (3) type of simple sugars in that protein
  (4) amino acids in that protein

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10.

10 In order for a species to evolve, it must be able to
   (1) consume a large quantity of food
   (2) reproduce successfully
   (3) maintain a constant body temperature
   (4) be domesticated

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11.

11 Domestic horses have a greater diversity of coat
   colors than that of wild horses. The process that
   led to a greater diversity of coat colors in domestic horses is
   (1) selective breeding      (3) gene alteration
   (2) random mutation         (4) natural selection

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12.

12 A population of white moths lives in a forest near
   a factory. This factory burns coal and pollutes the
   air with black dust. Over time, this dust has
   settled on the trees in the area, making them
   darker in color. This could result in
   (1) an increase in the white moth population
   (2) a decrease in the white moth population
   (3) an increase in the number of trees in the
       area
   (4) a decrease in the air pollution affecting the
       area

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13.

13 The crucian carp, a Scandinavian fish, thrives in
   shallow ponds that freeze over during winter.
   While other creatures in the pond die from lack
   of oxygen, these carp are able to obtain energy
   through a biochemical pathway that does not
   require oxygen. This characteristic is an example
   of a
   (1) feedback mechanism common to carnivores
        that inhabit shallow pond ecosystems
   (2) favorable adaptive trait that has led to
        increased survival
   (3) stage of succession that leads to a new
        community
   (4) gene mutation that occurred because carp
        need to survive to maintain ecological stability

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14.

14 Examination of ancient rock layers at a certain
   location reveals many different fossils. Which
   conclusion can be drawn concerning the species
   that formed these fossils?
   (1) Only the predators are still present.
   (2) Many of them are now extinct.
   (3) They produced offspring that were all
       genetically identical.
   (4) They had no variations due to mutations.

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15.

15 Breathing rate is constantly being monitored and
   adjusted in the human body, which results in
   (1) the differentiation of mature body cells
   (2) feedback mechanisms removing damaged cells
   (3) modification of gene activity in cells
   (4) the internal environment being kept within
       certain limits

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