NEW YORK STATE REGENTS EXAMS
LIVING ENVIRONMENT
ANSWER KEY- JUNE 2000

Part B (30 credits)

Allow a total of 30 credits for Part B. In this part, sample responses are given for questions
that require a constructed response. Other scientifically correct answers should also be
accepted. Allow no partial credit for 1 credit responses.

(36)   1

(38)    1

(39)    3

(40)    3

41 The student should state two reasons that someone should question the claims made in the
advertisement. Allow 1 credit for each correct statement up to a maximum of 2 credits.

-do not know what the people ate along with taking the pill
-do not know if the people were truthful
-do not know how many people were in the study
-ten people too few for making a valid conclusion

42 -HIV attacks the immune system.
-Their resistance is lowered by HIV infection.

(43)    A

(44)     D

45 -Sperm cells need to swim to the egg.
-Sperm cells need nutrients to provide energy.

46 -Intervals on the y-axis are not appropriate.
-The title is incorrect.

47 -They are producers.
-They contain the most energy.

(48)   4

49 -There is less energy available at each succeeding level.
-Energy is lost as heat at each level.

50 -Scavengers remove dead organisms from the environment.
-Scavengers break down dead organisms.

51 -Energy in carbohydrate molecules is transferred to ATP.
-Carbohydrates have energy in their bonds that can be used to make
ATP for carrying on life functions.

(52)    4

53 -Veins and arteries may be blocked and tissue damage may result.
-The body may reject the new organ.

54 To prevent rejection of a transplanted organ

55 -The drug might weaken the ability of the body to fight diseases.
-The drug may leave the patient less able to fight infection.

56 -The organs would not be rejected.
-Organs produced by this process would not be foreign material and 
would not be attacked by the patient's immune system.

(57)   2

58 -They introduced industry to the area.
-They built factories that produced soot (pollution).