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NYS Regents

NEW YORK STATE REGENTS EXAMS
LIVING ENVIRONMENT - JANUARY 2002

6 A glucose-tolerance test was conducted to observe the effect of time on
glucose concentration in the blood. An animal was fed 10 milliliters of glucose solution. At five different times after the ingestion of the solution, the blood glucose concentration was determined, and the results were recorded in the data  table below.

The change in glucose concentration in the blood between 0 and 30 minutes
was probably due to

(1) the liver releasing glucose into the small intestine
(2) glucose being absorbed from the digestive system
(3) the synthesis of glucose from starch
(4) glucose being used for cellular respiration

7 The diagram below represents movement of a large molecule across a membrane.

Which process is best represented in this diagram?

(1) active transport      (3) protein building
(2) diffusion                (4) gene manipulation

8 How does the type of reproduction shown in method A in the diagram below
differ from the type of reproduction shown in method B?

(1) Method A illustrates sexual reproduction, and method B illustrates asexual reproduction.
(2) Offspring produced by method B will be genetically alike, but offspring produced by method A will be genetically different.
(3) The two cells shown in the last step of method A are genetically alike, but the two cells shown in the last step of method B are genetically  different.
(4) Offspring produced by method A will be genetically like the parent, but offspring produced by method B will be genetically different from the parents.

9 When humans first domesticated dogs, there was relatively little diversity in  the species. Today, there are many variations such as the German shepherd and the dalmation. This increase in diversity is most closely associated with

(1) cloning of selected body cells
(2) selective breeding
(3) mitotic cell division
(4) environmental influences on inherited traits

10 As a result of sexual reproduction, an organism can pass a gene mutation to its offspring if the mutation occurs in

(1) a body cell     (3) liver tissue
(2) a gamete         (4) white blood cells


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