Regents Living Environment August 2017 Questions Answers Keys
The University of the State of New York
Regents High School Examination
Thursday, August 17, 2017 — 12:30 to 3:30 p.m., only
Student Name _____________________________________________________________
School Name ______________________________________________________________
Living Environment August 2017 Questions
Directions (1–30): For each statement or question, record on the separate answer sheet the number of the word or expression that, of those given, best completes the statement or answers the question.
1.) A fruit fly is classified as a consumer rather than as a producer because it is unable to
- (1) reproduce asexually
- (2) synthesize its own food
- (3) release energy stored in organic molecules
- (4) remove wastes from its body
2.) Which change is an example of maintaining dynamic equilibrium?
- (1) A plant wilts when more water is lost from the leaves than is lost by the roots.
- (2) A plant turns yellow when light levels are very low.
- (3) Insulin is released when glucose levels in the blood are high.
- (4) A person sweats when the environmental temperature is low
3.) Organisms contain compounds such as proteins, starches, and fats. The chemical bonds in these compounds can be a source of
- (1) amino acids
- (3) energy
- (2) simple sugars
- (4) enzymes
4.) Phosphorus is necessary for the growth of healthy plants. Scientists are developing plants that can grow in phosphorus-poor soil. Some of these new varieties, produced in a lab, make extra copies of a protein that helps them obtain more phosphorus from the soil. The process being used to develop these new varieties is most likely
- (1) paper chromatography
- (2) natural selection
- (3) direct harvesting
- (4) genetic engineering
5.) Which life function is not necessary for an individual organism to stay alive?
- (1) nutrition
- (2) reproduction
- (3) regulation
- (4) excretion
6.) Lobsters prey on sea hares, which are marine animals. The lobsters find their prey through a sense of smell. The sea hares defend themselves by squirting ink at the lobster, as shown in the photo below. The ink sticks to the lobster, interfering with its sense of smell.
The most likely reason the sea hare can escape is because of the sea hare ink
- (1) pushes the sea hare away rapidly as the ink is expelled
- (2) blocks a receptor on certain cells in the lobster
- (3) causes the lobster to change its prey
- (4) prevents movement of the lobster
7 Which statement is an accurate description of genes?
- (1) Proteins are made of genes and code for DNA.
- (2) Genes are made of proteins that code for nitrogen bases.
- (3) DNA is made of carbohydrates that code for genes.
- (4) Genes are made of DNA and code for proteins.
8 The bobolink is a small blackbird that nests in fields of tall grass. It breeds in the summer
across much of southern Canada and the northern United States. It migrates long distances, wintering in southern South America. The numbers of these birds are declining due to disruption of the areas where they live.
In order to save these birds from extinction, the best course of action would be to
- (1) prevent the birds from migrating to South America
- (2) encourage farmers to let their hay fields undergo succession
- (3) work to protect bobolink habitats in South and North America
- (4) capture all the bobolinks and keep them safe in zoos
9 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
- (1) cell membranes
- (2) nuclei
- (3) mitochondria
- (4) ribosomes
10 Which row in the chart below shows a direct relationship that can exist between two living
- (1) producer – carnivore
- (2) predator – prey
- (3) parasite – prey
- (4) carnivore – host
11 Scientists have studied the return of plant life on Mount St. Helens ever since the volcano erupted in 1980. Wildflowers began colonizing the area, followed by shrubs and small trees. Scientists predict that it will likely take hundreds of years before the area returns to a forest dominated by fir and hemlock trees. These changes are an example of
- (1) humans degrading an ecosystem by removing wildflowers
- (2) the loss of genetic variation in a plant species
- (3) the growth of a forest through ecological succession
- (4) the biological evolution of wildflowers, shrubs, and trees
12 The most likely result of completely removing carbon dioxide from the environment of a plant is that sugar production will
- (1) continue at the same rate
- (2) increase and oxygen production will also increase
- (3) increase and oxygen production will stay the same
- (4) decrease and eventually stop
13 Before a new shopping center can be built on previously undeveloped land, the builders must submit a proposal to the local government for approval. Which statement identifies an environmental concern associated with the development of the shopping center?
- (1) Building the center would decrease resources needed by local organisms.
- (2) The new shopping center would increase competition with already existing businesses.
- (3) Building the center would decrease the amount of pollution in the area.
- (4) The new shopping center would increase the biodiversity of the area.
14 Homeowners have been encouraged to learn how to identify invasive plants and to remove them if they find them. The most likely reason for removing invasive plants is to
- (1) allow only one type of native plant to grow
- (2) preserve biodiversity
- (3) eliminate unfamiliar food sources
- (4) increase the rate of ecological succession
15 Which row in the chart below correctly pairs a human activity with its impact on the environment?
|(1)||decrease in the use of pesticides||erosion of rock in the soil|
|(2)||increase in housing developments||improvement in air quality|
|(3)||increase in human population||reduction in water usage|
|(4)||decrease in recycling||reduction in amount of available resources|
16 The diagram below represents some steps in a procedure used in the field of biotechnology.
This bacterial cell can now be used to produce
- (1) the bacterial gene for insulin that can be inserted into humans
- (2) human genes for enzymes that can be inserted into humans
- (3) insulin that can be used by humans
- (4) enzymes necessary to treat human diseases
17 The graph below represents the number of brown and green beetles collected in a particular ecosystem.
The change observed in the number of green and brown beetles in the population is most likely due to
- (1) natural selection
- (2) selective breeding
- (3) gene manipulation
- (4) a common ancestor
18 A reproductive system is represented in the diagram below.
Which structure is correctly paired with its reproductive function?
- (1) A – pathway of gametes
- (2) B – synthesis of progesterone
- (3) C – production of sperm
- (4) D – regulation of homeostasis
19 For centuries, humans have used resources from coastal areas and open ocean waters. An example of an activity that would promote the conservation of coastal areas and ocean resources is
- (1) harvesting large numbers of different fish species
- (2) allowing all-terrain vehicles access to beach areas
- (3) creating protected zones of natural grasses and shrubs in beach areas
- (4) encouraging the construction of factories along the ocean shoreline
20 Which activity would eventually result in a stable ecosystem?
- (1) deforestation in an area to increase space for the species living there
- (2) mowing a large field so it can be used for recreation
- (3) allowing native plants to grow undisturbed in an abandoned field
- (4) spraying pesticides on a field at the end of each growing season
21 Some states require shoppers to pay a deposit on certain beverage containers made of plastic and glass. When shoppers return the containers, their deposits are returned to them. How is this system intended to help the environment?
- (1) It encourages people to buy products that do not have a deposit.
- (2) It reduces the amount of money shoppers actually spend.
- (3) It reduces the number of plastics and glass put into landfills.
- (4) It forces manufacturers to reduce air pollution when they are making the containers.
22 The diagram below represents a food web.
Which level contains organisms that carry out autotrophic nutrition?
- (1) 1
- (2) 2
- (3) 3
- (4) 4
23 Mad cow disease is a fatal disease that destroys brain tissue. Researchers have found that a prion protein, which is an abnormally constructed molecule, is responsible. Which statement best describes the characteristics a protein must have to function correctly?
- (1) A protein is a long chain of amino acids folded into a specific shape.
- (2) A protein is a long chain of simple sugars folded into a specific shape.
- (3) A protein is made of amino acids synthesized into a short, circular chain.
- (4) A protein is made of simple sugars synthesized into a short, circular chain.
Download Living Environment August 2017 Question Answers
|Living Environment Examination Question|
|Scoring Key and Rating Guide|