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NEW YORK STATE REGENTS EXAMS
LIVING ENVIRONMENT - JUNE 2000

PART A

Directions (1-35): For each statement or question, select the word or expression that,
of those given, best completes the statement or answers the question. Record your
answer on the separate answer paper in accordance with the directions on the front page
of this booklet.
1 An experiment was performed to determine the effect of different mineral salts on plant
growth. Forty pots containing genetically identical plants were divided into four equal groups and
placed in a well-lighted greenhouse. Each pot contained an equal amount of non-mineral potting
soil and one plant. Minerals were then added in equal amounts to each experimental group of
pots as shown below.

For the experiment to be valid, what should be added to the control group
of pots?

(1) water                      (3) potassium salts
(2) nitrogen salts           (4) potassium and phosphorous salts

2 A biologist observed a plant cell in a drop of water as shown in diagram
A. The biologist added a 10% salt solution to the slide and observed the
cell as shown in diagram B.

The change in appearance of the cell resulted from

1 more salt moving out of the cell than into the cell
2 more salt moving into the cell than out of the cell
3 more water moving into the cell than out of the cell
4 more water moving out of the cell than into the cell

3 Which statement describing the cells in a body system is correct?

1 Each cell in the system is identical to the other cells in the system, and
each cell works independently of the other cells.
2 Some cells in the system may be different from the other cells in the
system, but all cells are coordinated and work together.
3 Each cell in the system is different from the other cells in the system,
and each cell works independently of the other cells.
4 All cells in the system are identical to each other and work together.

4 The process of active transport requires the most direct use of

(1) carbon dioxide         (3) ATP
(2) amino acids             (4) glucose

5 Which substances may form in the human body due to invaders
entering the blood?

1 nutrients       3 antibodies
2 vaccines       4 red blood cells

6 To communicate between cells, many multicellular animals use

1 nerve signals and respiratory gases
2 respiratory gases and hormones
3 bones and muscles
4 nerve signals and hormones

7 The diagram below can be used to illustrate a process directly involved in

1 tissue repair
2 meiosis
3 recombination
4 sexual reproduction

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NEW YORK STATE REGENTS EXAMS LIVING ENVIRONMENT - JUNE 2000

NEW YORK STATE REGENTS EXAMS
LIVING ENVIRONMENT - JUNE 2000