Living Environment NY Regents Review Quiz

Which of the following best describes the flow of energy in an ecosystem?

• Energy flows from consumers to producers.

• Energy flows in a cycle and is reused by producers.

• Energy flows from producers to consumers and then to decomposers.

• Energy is created by consumers and transferred to producers.

What is the basic unit of life?

• The organ

• The cell

• The molecule

• The tissue

In genetics, what does the term "homozygous" refer to?

• Having two different alleles for a trait

• Having two identical alleles for a trait

• The study of genes and their roles in inheritance

• A type of genetic cross

Which of the following is evidence of evolution?

• The fossil record

• Homogeneous environments

• Constant species population

• Identical DNA sequences in different species

Which organ system is responsible for transporting nutrients, gases, and wastes in the body?

• Digestive system

• Circulatory system

• Respiratory system

• Excretory system

What is the role of decomposers in an ecosystem?

• They produce oxygen through photosynthesis.

• They consume living plants and animals.

• They break down dead organisms and recycle nutrients back into the ecosystem.

• They are the primary producers in most ecosystems.

What is the process by which cells make copies of themselves?

• Translation

• Transcription

• Mitosis

• Meiosis

Which of the following is a principle of the theory of natural selection?

• All species can adapt to their environment through acquired characteristics.

• Individuals that inherit advantageous traits are more likely to survive and reproduce.

• All members of a species have an equal chance of survival.

• Species do not change over time.

What is the function of the respiratory system?

• To circulate blood throughout the body

• To digest and absorb nutrients

• To exchange gases (oxygen and carbon dioxide) with the environment

• To remove waste products from the body

In an ecosystem, what is a niche?

• A large habitat that supports many kinds of organisms

• The physical space occupied by an organism

• The role or function of an organism or species within an ecosystem

• A competitive interaction between species