Living Environment Regents: MCQ Practice Quiz

1. A student, not wearing safety goggles, gets some unknown chemical in his eye. What is the most appropriate action he should take?

Put on his safety goggles immediately.

Ask his lab partner to see if his eye looks okay.

Go to the eyewash station and use it to rinse his eye thoroughly.

Rub the eye gently and see if it hurts or stings.

Topic 9 Q9 p. 163

Explanation

Topic 9 Q9 p. 163

2. Human growth and sexual development are controlled by

Nerves

Hormones

The digestive system

The excretory system

Topic 4 Q3 p.66

Explanation

Topic 4 Q3 p.66

3.

Refer to the following diagram of a beaker with a membrane dividing it into two halves containing two kinds of molecules. Which process explains the change in the positions of molecules after 5 hours?

Respiration

Photosynthesis

Diffusion

Excretion

Topic 1 Q10 p.14

Explanation

Topic 1 Q10 p.14

4. Which relationship can be correctly inferred from the data present?

As sewage waste increases, the oxygen content decreases.

As sewage waste increases, the oxygen content increases.

As oxygen content decreases, the carp population decreases.

As oxygen level decreases, the trout population increases.

Topic 6 Q18 p.106

Explanation

Topic 6 Q18 p.106

5. A portion of DNA has the following sequence: A-T-C-G-T-A. Which DNA strand could corectly pair with the one given?

G-C-A-T-C-G

T-A-G-C-A-T

A-T-G-C-T-A

C-A-T-G-A-C

Topic 3 Q6 p.49

Explanation

Topic 3 Q6 p.49

6. What is the average length of this reproductive cycle?

32 days

28 days

14 days

4 days

Topic 4 Q14 p.67

Explanation

Topic 4 Q14 p.67

7. Bromthymol blue turns yellow in the presence of carbon dioxide. This characteristic makes it possible for Bromthymol blue to function as

A measure of volume

An indicator

A catalyst

An energy source

Topic 9 Q5 p. 162

Explanation

Topic 9 Q5 p. 162

8. When preparing a wet mount slide of onion cells, a student put a drop of Lugol's iodine stain on the slide. Lugol's iodine stain was added to

Prevent the formation of air bubbles

Make cell structures more visible

Increase the magnification

Increase the rate of photosynthesis in the cells

Topic 9 Q2 p.162

Explanation

Topic 9 Q2 p.162

9. Which statement describes two unsafe laboratory practices represented by the following diagram?

The flame is too high, and the test tube is unstoppered.

The opening of the test tube is pointed toward the student, and the student is not wearing goggles.

The test tube is unstoppered, and the student is not wearing goggles.

The beaker has water in it, and the flame is under the tripod.

Topic 9 Q4 p. 162

Explanation

Topic 9 Q4 p. 162

10. The diagram shows how an animal is organized.

Which label is needed to complete the diagram?

Atoms

Molecules

Organelles

Tissues

Topic 1 Q13 p. 14

Explanation

Topic 1 Q13 p. 14

11. On or about which day is the egg released from the ovary?

Day 8

Day 14

Day 20

Day 28

Topic 4 Q11 p.67

Explanation

Topic 4 Q11 p.67

12. The impact of increased sewage levels on the biodiversity of the lake ecosystem

Biodiversity increased due to increased oxygen levels.

Biodiversity decreased due to decreased oxygen levels.

Trout and carp had the best survival rates.

Carp need more oxygen to survive.

Topic 6 Q21 p. 106

Explanation

Topic 6 Q21 p. 106

13. Which fish species appears to withstand the greatest degree of oxygen depletion?

Whitefish

Walleye

Trout

Carp

Topic 6 Q20 p. 106

Explanation

Topic 6 Q20 p. 106

14. A few bacteria are placed in a nutrient solution. After several hours, thousands of bacteria are present. Which life activities are primarily responsible for this?

Digestion and movement

Digestion and reproduction

Circulation and respiration

Excretion and coordination

Topic 1 Q1 p. 13

Explanation

Topic 1 Q1 p. 13

15. In the diagram of the amoeba ( a single-celled organism) the arrows show the direction of movement of various substances.

Which of the cell's life activities are represented by the arrows?

Digestions, reproduction, and respiration

Excretion, transport, and respiration

Immunity, digestion, and movement

Digestion, coordination, and reproduction

Topic 1 Q19 p.15

Explanation

Topic 1 Q19 p.15

16. A scientist performed an experiment using the following steps. What should be in description should be where X is marked.

Define & research the problem --> X --> Set up & conduct the experiment --> Make observations & record data --> Fomrulate a conclusion --> repeat the experiment

Conclusion

Hypothesis

Data

Collecting organizing data

Topic 8 Q9 p.144

Explanation

Topic 8 Q9 p.144

17.

The following diagram represents part of the process of

Gel electrophoresis

Genetic engineering

Homeostatic control

Cell culturing

Topic 9 Q10 p. 163

Explanation

Topic 9 Q10 p. 163

18. The technique illustrated in the diagram is known as

Genetic engineering

Protein synthesis

Internal fertilization

External fertilization

Topic 3 Q5 p.49

Explanation

Topic 3 Q5 p.49

19. One reason a fish that lives in the ocean may have trouble living in a freshwater lake is that

There are more carnivores in freshwater habitats

Salt water holds more dissolved nitrogen than freshwater

More photosynthesis occurs in fresh water than in salt water

Water concentration in the fish is affected by salt levels in its environment

Topic 1 Q9 p. 13

Explanation

Topic 1 Q9 p. 13

20. Compared to the number of chromosomes in a normal human body cell, the number of chromosomes in a normal sperm cell is

The same

Twice as great

Half as great

Four times as great

Topic 4 Q 1 p.66

Explanation

Topic 4 Q 1 p.66

21. The greatest change in the lake's whitefish population occurred in the years between

1950 and 1955

1955 and 1960

1960 and 1965

1965 and 1970

Topic 6 Q19 p.106

Explanation

Topic 6 Q19 p.106

22. Children born to the same parents are usually very different from each other. These differences result primarily from the process of

Mitotic division

Meiosis

Asexual reproduction

Cloning

Topic 4 Q2 p. 66

Explanation

Topic 4 Q2 p. 66

23. Which mutation could be passed onto future generations?

A gene in the liver cell

Cancer caused by excessive exposure to the sun

A chromosomal alteration during gamete formation

A random breakage of a chromosome in a leaf cell of a maple tree

Topic 5 Q2 p.82

Explanation

Topic 5 Q2 p.82

24. The DNA sequences found in two different species are 95% the same. This suggests that these species

Are evolving into the same species

Contain identical proteins

May have similar evolutionary histories

Have the same number of mutations

Topic 5 Q9 p.83

Explanation

Topic 5 Q9 p.83

25. Which word equation represents the process of photosynthesis?

Starch -> many glucose molecules

Glucose + oxygen -> carbon dioxide + water + energy

Carbon dioxide + water -> glucose + oxygen

Fats -> sugar molecules

Topic 2 Q4 p.33

Explanation

Topic 2 Q4 p.33

26. Which process in plants produces carbon dioxide?

Respiration

Photosynthesis

Coordination

Digestion

Topic 2 Q 8 p.34

Explanation

Topic 2 Q 8 p.34

27. Which statement best describes the enzyme represented in the following graphs?

This enzyme works best at a temperature of 37 degrees C and a pH of 8.

This enzyme works best at a temperature of 55 degrees C and a pH of 12.

Temperature and pH have no effect on the action of this enzyme.

This enzyme works best at a temperature near freezing and a pH above 4 .

Topic 2 Q15 p.35

Explanation

Topic 2 Q15 p.35

28. Which process removes carbon dioxide from the atmosphere rather than adding it?

Cellular respiration

Combustion of gasoline

Photosynthesis

Deforestation

Topic 2 Q7 p.34

Explanation

Topic 2 Q7 p.34

29. Two slides A & B contain Elodea leaves (an aquatic water plant) Slide A is mounted in tap water that is 1% salt and 99% water. Slide B is mounted in a salt solution that is 6% salt and 94 % water. Elodea cells usually contain 1% salt. Ten minutes after the slides were prepared, a microscopic examination of cells in leaves A and B would most likely show evidence that

Water had moved out of the cells of leaf B

Salt had moved out of the cells of leaf B

Water had moved into the cells of leaf A

Salt had moved into the cells of leaf A

Topic 1 Q8 p. 13

Explanation

Topic 1 Q8 p. 13

30. The diagram represents the field of view of a compound light microscope. Three single celled organisms are located across the diameter of the field.

Knowing that 1mm = 1000 micrometers, what is the approximate length of each single celled organisms?

250 micrometers

500 micrometers

1000 micrometers

1500 micrometers

Topic 9 Q7 p. 163

Explanation

Topic 9 Q7 p. 163

31. What is the technique of genetic engineering in which DNA is transferred from the cells of one organism to the cels of another?

Gene splicing

Chromatography

Electrophoresis

Selective breeding

Topic 3 Q3 p.49

Explanation

Topic 3 Q3 p.49

32. During which part of this cycle does the breakdown of the thickened uterine lining occur?

Ovulation

Corpus luteum stage

Menstruation

Follicle stage

Topic 4 Q10 p.67

Explanation

Topic 4 Q10 p.67

33. Which hormones are secreted by the ovaries?

Progesterone and estrogen

FSH and progesterone

FSH and LH

LH and estrogen

Topic 4 Q13 p.67

Explanation

Topic 4 Q13 p.67

34. The diagram below represents a cell that will undergo mitosis.

Which of the diagrams best illustrates the daughter cells that result from a normal mitotic cell division of the parent cell shown?1.

2.

3.

4.

1

2

3

4

Topic 4 Q9 p.67

Explanation

Topic 4 Q9 p.67

35. Which is arranged in the correct sequence?

Fertilization -> embryo development -> meiosis -> birth

Embryo development -> meiosis -> fertilization -> birth

Meiosis -> fertilization -> embryo development -> birth

Fertilization -> meiosis -> embryo development -> birth

Topic 4 Q 8 p.67

Explanation

Topic 4 Q 8 p.67

36. DDT is an insecticide that accumulates in the fatty tissues of animals and is transferred through food chains. Its concentration increases at each link of a food chain. Which organism in a food chain is more likely to accumulate the highest concentration of DDT?

Rabbit (herbivore)

Corn (a producer)

Field mouse (a consumer)

Owl (a predator)

Topic 7 Q 9 p.124

Explanation

Topic 7 Q 9 p.124

37. A student views some cheek cells under low power. Before switching to high power, the student should

Adjust the eyepiece

Center the image being viewed

Remove the slide from the stage

Remove the coverslip from the slide

Topic 9 Q3 p.162

Explanation

Topic 9 Q3 p.162

38. When stained with certain dyes, cell structures known as nucleoproteins appear black. These dyes would most likely be used to

Identify specific nucleoproteins within cells

Stain all types of cell organelles

Determine the chemical composition of nucleoproteins

Indicate the presence of nucleoproteins

Topic 9 Q8 p. 1963

Explanation

Topic 9 Q8 p. 1963

39. The hormone FSH stimulates the development of a follicle in the ovary of a human female. As the follicle develops, it secretes estrogen. A high level of estrogen decreases the secretion of FSH. This mechanism is an example of

Gamete development

Cell differentiation

Positive feedback

Negative feedback

Topic 4 Q12 p.67

Explanation

Topic 4 Q12 p.67

40. Read the following statement and Identify the steps of development that best corresponds.
In an experiment, caterpillars consumed 8 grams of lettuce leaves and 0.4 grams of tomatoe leaves.

Test the hypothesis with an experiment.

State the results.

Draw a conclusion from the results.

Form a hypothesis.

The correct answer is "State the results." In this scenario, after conducting the experiment where caterpillars consumed lettuce and tomato leaves, the next step would be to state the results of the experiment. This involves recording and presenting the data obtained from the experiment, such as the amount of lettuce and tomato leaves consumed by the caterpillars. Stating the results is an important step in the scientific method as it allows for the analysis and interpretation of the data, which then leads to drawing conclusions and forming new hypotheses for further experimentation.

Explanation

The correct answer is "State the results." In this scenario, after conducting the experiment where caterpillars consumed lettuce and tomato leaves, the next step would be to state the results of the experiment. This involves recording and presenting the data obtained from the experiment, such as the amount of lettuce and tomato leaves consumed by the caterpillars. Stating the results is an important step in the scientific method as it allows for the analysis and interpretation of the data, which then leads to drawing conclusions and forming new hypotheses for further experimentation.

41. Read the following statement and Identify the steps of development that best corresponds.
If I add more catalyst to the reaction, the reaction will speed up.

Test the hypothesis with an experiment.

State the results.

Draw a conclusion from the results.

Form a hypothesis.

Topic 8 Q6 p.144

Explanation

Topic 8 Q6 p.144

42. What is the average length of this earth worm?

9 mm

90 mm

10.6 cm

106 cm

Topic 9

Explanation

Topic 9

43. Read the following statement and Identify the steps of development that best corresponds.
A scientist took saliva from his dog's mouth and mixed it with a solution of starch and warm water. He took the same amount of saliva from his own mouth and mixed it with the contents of a second tube of starch and warm water. One hour later, the contents of both tubes were checked for sugar.

Test the hypothesis with an experiment.

State the results.

Draw a conclusion from the results.

Form a hypothesis.

Topic 8 Q7 p.144

Explanation

Topic 8 Q7 p.144

44. A student sees the following image when observing the letter "f" with a low power objective lens of a microscope.

Which of thew four following diagrams most closely resembles the image the student will see after switching to high power?

1

2

3

4

Topic 9 Q6 p. 162

Explanation

Topic 9 Q6 p. 162

45. Read the following statement and Identify the steps of development that best corresponds.
Beans will grow faster if you fertilize them at regular intervals than if you only fertilize the ground once before you plant them.

Test the hypothesis with an experiment.

State the results.

Draw a conclusion from the results.

Form a hypothesis.

Topic 8 Q5 p. 144

Explanation

Topic 8 Q5 p. 144