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Living Environment Regents Review
Test Description: Living Environment Questions
Instructions: Answer all questions to get your test result.
1) Which statement best describes the relationship between cells, DNA, and proteins?
A
Cells are linked together by proteins to make different kinds of DNA molecules.
B
Cells contain DNA that controls the production of proteins.
C
DNA is composed of proteins that carry coded information for how cells funtion.
D
Proteins are used to produce cells that link amimo acids toghether into DNA.
2) Down syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of
A
an error in the process of cloning
B
replication of a single chromosome during mitosis
C
a gene mutation
D
an error in meiotic cell division
3) Genes involved in the production of abnormal red blood cells have an abnormal sequence of
A
ATP molecules
B
amino acids
C
bases
D
sugars
4) The reason that organisms can NOT produce populations of unlimited size is that
A
species rarely compete with one another
B
the resources of Earth are finite
C
there is no carrying capacity on Earth
D
interactions between organisms are unchanging
5) Which statement describing a cause of extinction includes the other three?
A
Members of the extinct species were too slow to escape from predators.
B
Members of the extinct species were unable to compete for food.
C
Members of the extinct species were unable to conceal their presence by camouflage
D
Members of the extinct species lacked adaptations essential for survival.
6) In the transfer of energy from the Sun to the ecosystems, which molecule is one of the first to store this energy?
A
fat
B
protein
C
DNA
D
glucose
7) Which statement best describes how a vaccination can help protect the body against disease?
A
Vaccines contain white blood cells that engulf harmful germs & prevent from spreading through body.
B
Vaccines cause the production of specific molecules that will react w/ and destroy certain microbes.
C
Vaccines directly kill the pathogen that causes the disease.
D
Vaccines act as a medicine that cures the disease.
8) Organisms that are able to manufacture organic nutrients from substances in the abiotic environment are classified as
A
predators
B
fungi
C
autotrophs
D
heterotrophs
9) Which factor would have the greatest effect on the flow of energy into an ecosystem?
A
a large decrease in the amount of sunlight available
B
a small increase in the number of decomposers
C
a large increase in the number of carnivores
D
a small decrease in the amount of minerals available
10) Which structures carry out life functions within cells?
A
organ systems
B
organs
C
organelles
D
tissues
*select an answer for all questions
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