NYS Regents Living Environment

A farmer growing potatoes notices aphids, a type of insect, feeding on the plants. An insecticide was sprayed on the plants several times over a two-year period. The graph represents samples of three different generations of insecticide-resistant and nonresistant aphids over this time period. ***One negative consequence of using an insecticide is that it

• selects for insecticide-resistant organisms

• keeps a balance of organic compounds

• encourages biodiversity in plants

• gives the nonresistant aphids a survival advantage

Tags

NGSS.MS-LS4-4

NGSS.MS-LS1-5

NGSS.MS-LS2-4

The activity of a single-celled organism is represented in the diagram below. Which concept is best illustrated by this diagram?

• The life functions performed by single-celled organisms are different from the life functions performed by complex organisms.

• Single-celled organisms carry out life functions that are essential for survival.

• Since single-celled organisms lack organs, they can survive only in moist environments.

• Single-celled organisms contain one organelle that performs all the life functions.

Tags

NGSS.MS-LS1-2

This diagram represents the roles of different parts of the human body in keeping blood sugar at a balanced, normal level over time. ***The diagram shows human body structures that are coordinated to maintain homeostasis. Which correctly identifies the functions of these structures?

• Body System X = Digestion // Organ Y = Regulation

• Body System X = Circulation // Organ Y = Synthesis

• Body System X = Excretion // Organ Y = Transport

• Body System X = Locomotion // Organ Y = Nutrition

When body system X releases too much sugar into the blood, the body can maintain homeostasis by making

• more hormone A, only

• more hormone B, only

• more hormone A and more hormone B

• no hormone A and no hormone B

Tags

NGSS.MS-LS1-3

If body system X temporarily stops releasing sugar into the blood, a likely response of the body would be to

• stop using enzymes in body system X

• stop organ Y from producing hormone A

• start to increase synthesis of hormone B

• start to increase synthesis of hormone A

In the experimental setup below, which substance would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask?

• an indicator

• a chemical messenger

• an enzyme

• a salt solution

Tags

NGSS.MS-PS1-2

Which statement best expresses a basic scientific assumption?

• Interpretation of experimental results has provided explanations for all natural phenomena.

• If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.

• For any conclusion to be valid, the design of the experiment requires that only two groups be compared.

• After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.

The chart below provides information about two scientific discoveries in the field of biology. Which statement is the best interpretation of the material presented in the chart?

• Scientific explanations are built by combining evidence that can be observed with what people already know.

• Inquiry involves making judgments about the reliability of the source and relevance of the information.

• Science provides information, but values are also essential to making ethical decisions.

• Hypotheses are valuable even if they turn out not to be true, because they may lead to further investigation.

Tags

NGSS.MS-LS4-4

If organ Y becomes unable to produce enough hormone B, then homeostasis would be disrupted. To restore homeostasis and compensate for the lack of hormone B, one useful action would be to

• increase the production of hormone A

• remove organ Y from the body surgically

• reduce the carbohydrates in body system X

• reduce the synthesis of enzymes in organ Y

The process represented in the diagram is

• DNA replication

• natural selection

• gel electrophoresis

• genetic engineering