
NY Released Regents Exam - Living Environment (Aug 2025)
Quiz by NYSED Living Environment
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Which mechanism is used to maintain a stable internal environment in humans?
Industrial processes often release lead and copper compounds into waterways, which could then have adverse effects on human health. Previously, methods to remove these compounds were expensive and often produced toxins themselves. Researchers have now found that minced banana peels are able to quickly absorb lead and copper from river water. In addition, banana peels are non-toxic and inexpensive. The use of the banana peels in this case is probably a
Which abiotic factor would most directly limit the size of a gray squirrel population?
Human chromosomes differ from the chromosomes of fruit flies in that human chromosomes
One major benefit of the use of water power is that it
Adding chlorine to drinking water in many modern cities has been credited with reducing outbreaks of diseases, such as cholera. Some scientists claim that adding chlorine may result in by-products in the water that may very slightly increase the risk of cancer. The decision to add chlorine to drinking water most likely involved
The diagram below represents a process that can occur when chromosomes are copied in sexually reproducing organisms.
One result of this process is

Scientists initially studying the decline of certain penguin populations in Antarctic regions found that the penguins’ food source, a small animal known as krill, had dropped by 80%. These scientists are now studying the reduction in the number of tiny photosynthetic organisms that are the food source of the krill. The decline of the penguin population was a direct effect of the disruption of a
The diagram below represents a process that occurs during the development of human body cells.
Which statement is correct regarding these cells?

Which situation would most likely lead to increased diversity in a species?
Some allergies are inherited. Allergic reactions are often much less severe in adults who were exposed to the allergen (the substance causing the reaction) during infancy. What does this show about some inherited traits?
A tall building is built on an empty lot. The newbuilding blocks the sunlight on nearby streets for most of the day. Trees and plants grow more slowly or die off because the building has interfered with a
The Madagascar rose periwinkle, a species of rainforest flower that was used to treat cancer, is now endangered in its native habitat due to deforestation. Continuing the destruction of rainforests is likely to have a negative impact on future medical discoveries because it could cause a decrease in the
The letters in the diagram below indicate some parts of a cell.
Which structure provides the energy needed for protein synthesis?

One reason why some organisms, such as insects, evolve much faster than others is because they
The diagram below represents a metabolic process involving amino acids represented by AA.
Where in a cell would this process most likely take place?

Fossil fuels are considered nonrenewable because
The male emperor penguin cares for his unhatched egg for a long period of time by resting it upon his feet and against his body. This behavior in the male penguins most likely developed over time because the behavior
Many advertisements warn pregnant women of the dangers of exposure to certain risk factors because these factors may
When a colony of bacteria was exposed toa particular antibiotic, some of the bacteria survived while others did not. Which concept is supported by this example?
When uncooked meat is tenderized using pineapple juice, specific organic molecules in the meat are broken down. This reaction occurs because the pineapple juice most likely contains
One factor that might threaten global stability and alter the equilibrium in an ecosystem is increasing
Which group of organisms would be at the greatest risk of extinction if they were infected by a deadly virus?
When a person gets a tattoo and the needle used is contaminated with a pathogen, how does the human immune system respond?
Which row in the chart below correctly pairs the life function with the cell structure and organ that carry out the function?
Wolves are carnivores and no organism in their ecosystem preys on them. Which level would they occupy in the energy pyramid shown below?

Extinction has been a part of the history of Earth for over 3 billion years. Most of the species that have lived on Earth no longer exist. One reason the extinction of species is so common is that
The diagram below shows steps in the vaccination of an individual.
Substance X most likely contains

The diagram below represents a process that occurs in a cell.
In this process, DNA serves as a

The diagram below shows the relationships between some present-day species of bear.
Which statement best explains why so many bear species arose from a single ancestor?
Base your answer to question 31 on the process represented in the diagram below and on your knowledge of biology.
The diagram represents the process of

The table below shows the levels of glucose in blood samples taken from two individuals. Samples were taken over a five-hour period, starting right after they ate an average meal. The levels were compared to a medical standard range for blood glucose.
The information in the data table best represents regulation by means of

Which graph indicates that increasing the amount of antibiotic most effectively reduces the population of bacteria?
A biologist conducted a survey to determine the number of different species of organisms found in each of three different ecosystems. The data are shown in the table below.
All three ecosystems experienced large-scale environmental change. Which statement describes the most likely outcome?

Bacteria are often used to study how genetic codes function in organisms. One reason these studies are useful is that
A process known as acidification (lowering the pH) has been increasing in the oceans since the Industrial Revolution began. Acidification is related to the amount of carbon dioxide that dissolves in the oceans. One possible cause of the increase in carbon dioxide levels over the years is
In preparing the results of an experiment for publication, the use of a peer review committee would help the researcher to
The levels of organization for structure and function in living things are shown below.
Which choice correctly identifies one of these levels?

Scientists have inserted genes into potato plants, which enable the potatoes to produce a specific vaccine. The technology used to develop the potatoes that produce this vaccine involves
Changes in the size of the populations of three different species are shown in the graph below.
Which statement is a valid inference, based on information in the graph?

The graph below represents data obtained from an experiment involving a certain chemical reaction.
Which statement is a valid conclusion based on information in the graph?

The graph shows the number of mosquitoes in a certain mosquito population living in a rainforest ecosystem that was sprayed with an insecticide during the first month of an 8-month study.
Which statement represents the most likely explanation for the changes in the mosquito population shown in the graph during months 0-5?

If the mosquitoes in the initial population were compared to the mosquitoes surviving after seven months, the mosquitoes would most likely differ slightly in


A company makes a claim about the effectiveness of a new product. Which situation would make the claim invalid?
Which statement best describes the effect of a decrease in the mouse population on another population in the food web?

The map shows the Galapagos Islands, which is a group of volcanic islands located 600 miles off the coast of South America in the Pacific Ocean.
Finches found living on Pinta Island have different beak structures than finches found on Española Island. The most likely explanation for these differences is that the

The map shows the Galapagos Islands, which is a group of volcanic islands located 600 miles off the coast of South America in the Pacific Ocean.
The type of food available on the Galapagos Islands is thought to have had a major influence on the evolution of finches. Which factor would have the least influence on the evolution of the finches?

Which types of evidence do these three diagrams represent?
A student recorded his pulse rate for 20 seconds. He repeated this two more times. In his data table, the results were recorded as 21 beats, 19 beats, and 14 beats. The student’s average pulse rate per minute was
A technique that could be used to determine relationships between organisms more accurately than the use of the information in the data table is

A student placed one solution in a beaker and another solution inside a dialysis tubing bag that was suspended in the solution in the beaker. In which setup would the contents of the dialysis tubing bag turn blue-black after a few minutes?