TEAS Science Practice Test 1

1.

Which of the following describes the primary function of the respiratory system?

2.

Which of the following is the first step of the scientific method?

3.

The process of organisms with an advantageous trait surviving more often and producing more offspring than organisms without the advantageous trait describes which of the following basic mechanisms of evolution?

4.

Oxygen is exchanged between blood and tissues at which of the following areas?

5.

Which of the following contains a single immature egg cell that is released during ovulation?

6.

Which of the following describes the muscular organ that processes food material into increasingly smaller pieces, mixes it with saliva to create a bolus, and creates a barrier to transport food into the esophagus?

7.

Which of the following chambers of the heart receives blood returning from the lungs during pulmonary circulation?

8.

Which of the following is the lobe in the cerebral cortex primarily responsible for processing and integrating sensory information received from the rest of the body?

9.

Which of the following is an example of adaptive immunity?

10.

Which of the following describes a situation in which research results are consistent with every subsequent experiment, but the test used in the experiment does not measure what it claims to measure?

11.

Which of the following Mendellian laws describes how pairs of alleles within genes separate and recombine separately from other genes?

12.

Which of the following describes how atomic radius varies across the periodic table?

13.

Which of the following is NOT a tissue layer found in skeletal bone?

14.

Which of the following sets of valves is primarily responsible for preventing blood flow from major blood vessels to the heart?

15.

Which of the following is the connective area where nerve impulses send neurotransmitters across a synapse to a muscle cell to stimulate muscle contraction?

16.

Bone is composed primarily of which of the following inorganic materials?

17.

Which of the following is the region of the brain that controls and regulates autonomic functions such as respiration, digestion, and heart rate?

18.

Which of the following is the primary physical barrier the body uses to prevent infection?

19.

Which of the following describes the primary function of the pyloric sphincter?

20.

Which of the following is the location of fertilization in the female?

21.

The pineal gland is located in which of the following areas in the body?

22.

How many neutrons are in an atom of the element ⁸⁸₃₈Sr?

23.

Which of the following biological macromolecules is non-soluble, composed of hydrocarbons, and acts as an important source of energy storage for the body?

24.

Which of the following is specialized tissue in the right atrium that acts as the heart’s natural pacemaker by generating the electrical signal for the heartbeat?

25.

Which of the following is a dense, interconnected mass of nerve cells located outside of the central nervous system?

26.

Which of the following is a true statement about dominance in genetics?

27.

Two mice are both heterozygous for two traits: white fur (Ww) and short fur (Ss).  Their offspring are most likely to have which of the following genotypes for these traits?

28.

Which of the following describes the general function of cytokines in the immune system?

29.

Which of the following describes the path through which air moves during inhalation?

30.

Which of the following cell organelles are the site of lipid synthesis?

31.

Which of the following is NOT a function of progesterone in the female reproductive system?

32.

Which of the following layers of skin acts as an energy reserve by storing adipocytes and releasing them into circulation when energy is needed?

33.

Neurotransmitters send chemical messages across the gap between one neuron and another through which of the following structures?

34.

Muscle tissues will often require quick bursts of energy. As a result, which of the following organelles would be most likely to be found in higher than normal amounts in muscle cells?

35.

A scientist designs an experiment to test the hypothesis that exposure to more sunlight will increase the growth rate of elodea, a type of aquatic plant. The scientist has accumulated data from previous experiments that identify the average growth rate of elodea exposed to natural sunlight in the wild.

In the experiment set up, there are three tanks housing ten elodea each. Tank A is positioned in front of a window to receive natural sunlight similar to what elodea are exposed to; tank B is positioned in front of the same window but has an additional sunlight-replicating lamp affixed to it; and tank C is positioned in a dark corner with no exposure to natural sunlight.

When setting up the above experiment, the scientist has the option of using a separate water filter for each of the three tanks or using a single filtration system that attaches all three and affects them simultaneously. Which of the following filter set ups makes a more valid experiment and why?

36.

A scientist designs an experiment to test the hypothesis that exposure to more sunlight will increase the growth rate of elodea, a type of aquatic plant. The scientist has accumulated data from previous experiments that identify the average growth rate of elodea exposed to natural sunlight in the wild.

In the experiment set up, there are three tanks housing ten elodea each. Tank A is positioned in front of a window to receive natural sunlight similar to what elodea are exposed to; tank B is positioned in front of the same window but has an additional sunlight-replicating lamp affixed to it; and tank C is positioned in a dark corner with no exposure to natural sunlight.

The above experimental design description is an example of which of the following types of experiments?

37.

A scientist designs an experiment to test the hypothesis that exposure to more sunlight will increase the growth rate of elodea, a type of aquatic plant. The scientist has accumulated data from previous experiments that identify the average growth rate of elodea exposed to natural sunlight in the wild.

In the experiment set up, there are three tanks housing ten elodea each. Tank A is positioned in front of a window to receive natural sunlight similar to what elodea are exposed to; tank B is positioned in front of the same window but has an additional sunlight-replicating lamp affixed to it; and tank C is positioned in a dark corner with no exposure to natural sunlight.

Which of the following is the control group in the above experiment?

38.

Which of the following is a type of white blood cell that plays a key role in adaptive immunity by seeking out, attacking, and destroying targeted pathogens?

39.

Which of the following are the blood vessels that transport blood to the heart?

40.

Which of the following is the primary function of the large intestine?

41.

Water is capable of dissolving many substances that organisms need to carry on life functions. Which of the properties of water listed below is responsible for its ability to dissolve important nutrients like ionic salt compounds?

42.

Chromatids divide into identical chromosomes and migrate to opposite ends of the cell in which of the following phases of mitosis?

43.

A series of muscle contractions that transports food down the digestive tract in a wave-like fashion describes which of the following?

44.

Which of the following is NOT a function of the liver?

45.

2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O

The reaction above is an example of which of the following?

46.

Which of the following are regions of the digestive system in which amylase is produced?

47.

Which of the following describes a cell’s reaction to being placed in a hypertonic solution?

48.

Which of the following are the two major zones of the respiratory system?

49.

Which of the following choices would contain the code for making a protein?

50.

Which of the following distinguishes the isotopes of an element?

51.

Which of the following is the cartilaginous flap that protects the larynx from water or food while still allowing the flow of air?

52.

Which of the following describes the function of the fascia in muscle tissue?

53.

Which of the following correctly describes a strong acid?