Syvum Home Page

Home > Examinations > NYSED Regents Exams > Living Environment - High School >

Living Environment - New York Regents January 2013 Exam

   Directions (1–30): For each statement or question, record 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 two cell structures work together in the
  process of protein synthesis?
  (1) nucleus and chloroplast
  (2) ribosome and vacuole
  (3) nucleus and ribosome
  (4) mitochondrion and cell membrane

  1

  2

  3

  4

  Half-n-half Clue
 

2.

2 Prions are proteins that act as an infectious
  agent. They cause a variety of diseases, including
  “Mad Cow” disease. Prions cannot produce
  more prions on their own, but cause the host
  organism to replicate more prions. Most
  scientists do not consider prions to be alive. A
  valid reason for accepting that prions are
  nonliving things is that
  (1) no living thing can cause a disease
  (2) proteins are inorganic molecules
  (3) prions contain all of the material needed to
      reproduce
  (4) prions cannot carry out reproduction
      independently

  1

  2

  3

  4

  Half-n-half Clue
 

3.

3 Which molecule can diffuse from the digestive
  tract into the human bloodstream without first
  being digested?
  (1) protein             (3) fat
  (2) starch              (4) glucose

  1

  2

  3

  4

  Half-n-half Clue
 

4.

4 The nucleus of a cell coordinates processes and
  activities that take place in the cell. Which two
  systems perform a similar function in the human
  body?
  (1) nervous and endocrine
  (2) digestive and reproductive
  (3) circulatory and respiratory
  (4) skeletal and muscular

  1

  2

  3

  4

  Half-n-half Clue
 

5.

5 The letters in the diagram below indicate some
  parts of a cell.

The function of which cell part is most similar to
that of the human excretory system?
(1) A                    (3) C
(2) B                    (4) D

  1

  2

  3

  4

  Half-n-half Clue
 

6.

6 In the summer, the arctic fox appears brown
  because its cells produce a dark pigment.
  However, in the winter, the arctic fox appears
  white because the dark pigment is not produced.
  The color change is most likely due to the effect of
  (1) different genes produced in the different
      seasons
  (2) increased pollution on genetic mutations
  (3) environmental conditions on gene expression
  (4) poor nutrition on cell growth and development

  1

  2

  3

  4

  Half-n-half Clue
 

7.

7 Many years ago, a scientist grew pea plants that
  produced wrinkled peas. The peas from these
  plants produced new plants that also produced
  wrinkled peas. The scientist concluded that
  something in the parent plants was being
  transmitted to the next generation. This
  discovery is now known as
  (1) genetic engineering (3) heredity
  (2) biological evolution (4) natural selection

  1

  2

  3

  4

  Half-n-half Clue
 

8.

8 The process represented in the diagram below
  occurs in many cells.

The main function of this process is to
(1) provide an exact copy of the genetic code
(2) ensure genetic variation in a species
(3) synthesize cellular proteins
(4) produce antibodies to combat disease

  1

  2

  3

  4

  Half-n-half Clue
 

9.

9 The Old English Bulldog is extinct. To produce
  a new English Bulldog, dogs having the desired
  physical features, but not the aggressive nature
  of the old bulldogs, were mated. The result was
  a bulldog that was similar in appearance to the
  extinct bulldog, but without its fierce nature.
  Which technique was most likely used to
  develop this new variety of dog?
  (1) cloning
  (2) inducing mutations
  (3) genetic engineering
  (4) selective breeding

  1

  2

  3

  4

  Half-n-half Clue
 

10.

    Base your answers to questions 10 and 11 on the
diagram below and on your knowledge of biology.
The diagram represents the human female
reproductive system.

10 Structure A usually produces
   (1) sperm and eggs
   (2) testosterone and eggs
   (3) estrogen, progesterone, and eggs
   (4) estrogen, progesterone, and testosterone

  1

  2

  3

  4

  Half-n-half Clue
 

11.

11 The placenta forms from the combination of
   fetal tissue and tissue from structure
   (1) A                      (3) C
   (2) B                      (4) D

  1

  2

  3

  4

  Half-n-half Clue
 

12.

12 Which factor has the greatest influence on the
   development of new, inheritable characteristics?
   (1) combinations of genes resulting from mitosis
   (2) mutations of genes in reproductive cells
   (3) sorting of genes during asexual reproduction
   (4) recombining of genes during differentiation

  1

  2

  3

  4

  Half-n-half Clue
 

13.

13 In 2007, scientists broke open a fossil of a
   dinosaur bone and found some preserved
   tissues. Analysis showed that some proteins in
   these tissues are very similar to proteins found in
   modern chickens. The conclusion that these
   dinosaurs are related to modern chickens is
   based on
   (1) molecular similarities
   (2) natural selection
   (3) similarities in behavior
   (4) the occurrence of mutations

  1

  2

  3

  4

  Half-n-half Clue
 

14.

14 The diagram below represents the bone
   arrangements in the front limbs of three
   different species of mammals.

The similarities and differences in these limbs
suggest that all three species developed from the
same ancestor, but
(1) produced different numbers of offspring
(2) lived in different time periods
(3) adapted to different habitats
(4) migrated to similar habitats

  1

  2

  3

  4

  Half-n-half Clue
 

15.

15 For those individuals who have an allergic
   reaction to cats, a company in Los Angeles
   promises relief. They offer a new line of cats
   genetically modified to eliminate or reduce their
   allergy-causing properties. The development of
   this new line of cats most likely involved
   (1) using natural selection to produce a new
       variety of cat
   (2) altering the reproductive rate of cats
   (3) changing the behavior of cats
   (4) manipulating the DNA of cats

  1

  2

  3

  4

  Half-n-half Clue
 

16.

16 Which process allows a mammal to continue to
   grow in size?
   (1) mitosis of sex cells
   (2) mitosis of body cells
   (3) meiosis of sex cells
   (4) meiosis of body cells

  1

  2

  3

  4

  Half-n-half Clue
 

17.

17 In 1970, a deadly disease spread through corn
   crops in the United States. Scientists discovered
   that 80 percent of the corn contained the gene
   that made the plants more likely to be infected
   with the disease. This problem might have been
   avoided if the cornfields across the country had
   had more
   (1) large predators to control parasite populations
   (2) selective mutations
   (3) genetic diversity
   (4) breeding of infected plants

  1

  2

  3

  4

  Half-n-half Clue
 

18.

18 According to the fossil record, which statement
   is accurate?
   (1) Most of the species that have lived on Earth
       no longer exist.
   (2) Most of the species that have lived on Earth
       still exist today.
   (3) Fossils of species that never existed can be
       found.
   (4) Fossils of species that never existed, but will
       exist in the future, can be found.

  1

  2

  3

  4

  Half-n-half Clue
 

19.

19 An organism that reproduces asexually will have
   offspring that have
   (1) the same genetic information as both of its
       parents
   (2) different genetic information from either of
       its parents
   (3) the same genes as its parent
   (4) different genes from its parent

  1

  2

  3

  4

  Half-n-half Clue
 

20.

20 Some sea slugs store chloroplasts obtained from
   algae they have ingested. The chloroplasts
   continue to carry out photosynthesis within the
   slugs. What advantage would this activity be to
   these sea slugs?
   (1) The slugs with chloroplasts can synthesize
       some of their own food.
   (2) The slugs with chloroplasts no longer need
       to carry out respiration.
   (3) The chloroplasts provide the slugs with
       camouflage that protects them from UV
       radiation.
   (4) The chloroplasts contain enzymes that allow
       the slugs to digest starch.

  1

  2

  3

  4

  Half-n-half Clue
 

21.

21 The energy released when sugar molecules are
   broken down is stored in
   (1) minerals             (3) DNA
   (2) ATP                  (4) wastes

  1

  2

  3

  4

  Half-n-half Clue
 

22.

22 Responses of the immune system to usually
   harmless environmental substances are known as
   (1) antigen production
   (2) chromosomal mutations
   (3) pathogens
   (4) allergies

  1

  2

  3

  4

  Half-n-half Clue
 

23.

23 People have been warned about the dangers of
   excessive exposure to radiation during certain
   medical procedures. The most likely reason for
   this warning is that radiation exposure might
   (1) result in gene mutations and uncontrolled
       cell growth
   (2) cause the rejection of transplanted organs
   (3) increase body temperature by two to five
       degrees
   (4) prevent the transport of materials into cells

  1

  2

  3

  4

  Half-n-half Clue
 

24.

24 A scientist was studying a population of fish in a
   pond over a period of 10 years. He observed that
   the population increased each year for 3 years,
   and then remained nearly constant for the rest of
   the study. The best explanation for this
   observation is that the population had
   (1) stopped reproducing
   (2) reached carrying capacity
   (3) mutated into a different species
   (4) run out of food and migrated to a different
       pond

  1

  2

  3

  4

  Half-n-half Clue
 

25.

25 Increased human population growth usually
   results in
   (1) a decrease in the need for farming
   (2) a need for stronger environmental protection
       laws
   (3) lower levels of air and water pollution
   (4) an increase in natural wildlife habitats

  1

  2

  3

  4

  Half-n-half Clue
 

26.

26 Four levels of an energy pyramid are
   represented below.

Which statement about this energy pyramid is
correct?
(1) Organisms in level 4 receive their energy
    directly from the Sun.
(2) Organisms in level 2 are carnivores.
(3) Organisms in level 2 receive their energy
    from level 3.
(4) Organisms in level 1 are autotrophic.

  1

  2

  3

  4

  Half-n-half Clue
 

27.

27 Growing exotic (nonnative) plant species in
   parks and gardens could lead directly to an
   increase in the
   (1) biodiversity of the autotrophs that feed on
       them
   (2) populations of native carnivores
   (3) competition between them and native
       producers
   (4) breeding between them and native
       herbivores

  1

  2

  3

  4

  Half-n-half Clue
 

28.

28 Scientists have been concerned about the
   reduction of shark populations due to
   overfishing off the east coast of the United
   States. Sharks feed on rays, which feed on
   scallops. Scallops feed on microscopic algae,
   which they filter from seawater. Without sharks,
   the rays consume and eliminate scallop beds,
   harming the scallop fishing industry. This
   situation demonstrates that
   (1) sharks are not important for the stability of
       this ecosystem
   (2) reducing the shark population increases the
       quantity of scallops that can be harvested
   (3) humans can upset ecosystem stability by
       removing species
   (4) humans improve ecosystem diversity by
       removing predators

  1

  2

  3

  4

  Half-n-half Clue
 

29.

29 The diagram below represents changes in the sizes of openings present in leaves as a result of the actions
   of cells X and Y.

The actions of cells X and Y help the plant to
(1) maintain homeostasis by controlling water loss
(2) store excess heat during the day and remove the heat at night
(3) absorb light energy necessary for cellular respiration
(4) detect changes in the biotic factors present in the environment

  1

  2

  3

  4

  Half-n-half Clue
 

30.

30 The diagram represents the changes in an area over time.

This series of changes in the area over hundreds of years is known as
(1) evolution                                              (3) ecological succession
(2) feedback                                               (4) direct harvesting

  1

  2

  3

  4

  Half-n-half Clue
 
Skip to Questions 31 - 43


 
56 more pages in Living Environment - High School


Contact Info © 1999-2017 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-