August 2017 Living Environment Regents Questions 1-10 Question Preview (ID: 56811)

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A child with cystic fibrosis has an altered protein in his cells that stops chloride ions from leaving the cells. This protein most likely affects the functioning of

a) cell membranes

b) nuclei

c) mitochondria

d) ribosomes

Which statement is an accurate description of genes?

a) Proteins are made of genes and code for DNA.

b) Genes are made of proteins that code for nitrogen bases.

c) DNA is made of carbohydrates that code for genes.

d) Genes are made of DNA and code for proteins.

In order to save these birds from extinction, the best course of action would be to

a) prevent the birds from migrating to South America

b) encourage farmers to let their hay fields undergo succession

c) work to protect bobolink habitats in South and North America

d) capture all the bobolinks and keep them safe in zoos

The most likely reason the sea hare can escape is because the sea hare ink

a) pushes the sea hare away rapidly as the ink is expelled

b) blocks a receptor on certain cells in the lobster

c) causes the lobster to change its prey

d) prevents movement of the lobster

Which life function is not necessary for an individual organism to stay alive?

a) nutrition

b) reproduction

c) regulation

d) excretion

Organisms contain compounds such as proteins, starches, and fats. The chemical bonds in these compounds can be a source of

a) amino acids

b) simple sugars

c) energy

d) energy

The process being used to develop these new varieties is most likely

a) paper chromatography

b) natural selection

c) direct harvesting

d) genetic engineering

Which change is an example of maintaining dynamic equilibrium?

a) A plant wilts when more water is lost from the leaves than is lost by the roots.

b) A plant turns yellow when light levels are very low.

c) Insulin is released when glucose levels in the blood are high.

d) A person sweats when the environmental temperature is low.

A fruit fly is classified as a consumer rather than as a producer because it is unable to

a) reproduce asexually

b) synthesize its own food

c) release energy stored in organic molecules

d) remove wastes from its body

Which row in the chart below shows a direct relationship that can exist between two living organisms?

a) 1

b) 2

c) 3

d) 4

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