New York State Chemistry RegentsNew York State Earth Science Regents

 
NYS Living Environment Regents January 2008
Living Environment Regents January 2008 Question 75 PDF Print E-mail
Wednesday, 22 April 2009 08:31
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Option 1 – Separating DNA fragments

Electrophoresis is the motion of dispersed particles relative to a fluid under the influence of an electric field that is space uniform.

It is not a method for changing genetic code or indicating presence of starch or separating color compounds. Hence, options 2,3 and 4 are incorrect.
 
Living Environment Regents January 2008 Question 74 PDF Print E-mail
Wednesday, 22 April 2009 08:30
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The large tree finch is most likely to compete with the small tree finch because they
both eat mainly animal food.
Last Updated on Monday, 30 November 2009 16:09
 
Living Environment Regents January 2008 Question 73 PDF Print E-mail
Wednesday, 22 April 2009 08:28
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Substance B is a complex carbohydrate and it did not move out of the model cell since it is a large molecule.
Last Updated on Monday, 30 November 2009 16:30
 
Living Environment Regents January 2008 Question 72 PDF Print E-mail
Wednesday, 22 April 2009 08:24
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Name of substance C

Direction of Movement of Substance C

Reason for the movement of Substance C

iodine

High to low concentration

diffusion

Starch indicator

Into cell

Small size molecules


Last Updated on Wednesday, 22 April 2009 08:33
 
Living Environment Regents January 2008 Question 71 PDF Print E-mail
Wednesday, 22 April 2009 08:21
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  • heart: increased blood flow supplies more oxygen and/or nutrients
  • skeletal muscle: greatly increased supply of blood, providing additional oxygen and/ornutrients
  • skeletal muscle: removes more waste during exercise
  • digestive organs: a reduction in blood flow, diverting blood to other parts of the body
  • where use of oxygen has increased
Last Updated on Monday, 30 November 2009 15:54
 
Living Environment Regents January 2008 Question 70 PDF Print E-mail
Wednesday, 22 April 2009 08:18

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Option 1 – protein molecule

Cytochrome c does not contain genes hence option 2 is incorrect.

It is not a carbohydrate hence option 3 is incorrect.

It is the component of the mitochondria hence option 4 is incorrect

Last Updated on Monday, 13 July 2009 13:41
 
Living Environment Regents January 2008 Question 69 PDF Print E-mail
Wednesday, 22 April 2009 08:15

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Option 2 – These organisms have all evolved from an ancestor that produced Cytochrome c

There is no reference to reproduction or gene mutation specific association of cytochrome c with heterotrops in the table, hence option 1, 3 and 4 are incorrect.

Last Updated on Monday, 30 November 2009 15:06
 
Living Environment Regents January 2008 Question 68 PDF Print E-mail
Wednesday, 22 April 2009 08:13
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Option 4 - Dog

Among Tuna, Chicken, Moth and Dog; Dog has the least number of differences in cytochrome c compared to humans.
 
Living Environment Regents January 2008 Question 67 PDF Print E-mail
Wednesday, 22 April 2009 08:11
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Option 3 – Base sequences of DNA

Shape of leaves and habitats of plants species are influenced by external factors.

Guard cells present on the undersurface of the leaves, only help in gas exchange and water loss but are not useful for determining the relationship between plant species.
 
Living Environment Regents January 2008 Question 66 PDF Print E-mail
Wednesday, 22 April 2009 08:08
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Option 3 – Birds with successful beak adaptations obtained food and survived to have offspring
There is no information about the color of the beak or dominance of birds with large beaks or changes in beak shapes for availing food in the above example.
 
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