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NYS Regents

NEW YORK STATE REGENTS EXAMS
LIVING ENVIRONMENT - JUNE 2003

6 When a person does strenuous exercise, small blood vessels (capillaries) near the surface of the skin increase in diameter. This change allows the body to be cooled. These statements best illustrate

(1) synthesis          (3) excretion
(2) homeostasis     (4) locomotion

7 Which ecological term includes everything represented in the illustration
below
?

(1) ecosystem     (3) population
(2) community     (4) species

8 Which sequence represents the correct order of levels of organization  found in a complex organism?

(1) cells organelles organs organ systems tissues
(2) tissues
organs organ systems organelles cells
(3) organelles
cells tissues organs organ systems
(4) organs
organ systems cells tissues organelles

9 Scientific studies show that identical twins who were separated at birth and raised in different homes may vary in height, weight, and intelligence.The most probable explanation for these differences is that

(1) original genes of each twin increased in number as they developed
(2) one twin received genes only from the mother while the other twin received genes only from the father
(3) environments in which they were raised were different enough to affect the expression of their genes
(4) environments in which they were raised were different enough to change the genetic makeup of both individuals

10 When DNA separates into two strands, the DNA would most likely be directly involved in

(1) replication      (3) differentiation
(2) fertilization     (4) evolution

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