TEAS Science Practice Test #3

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

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

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?

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

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

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?

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

A physician makes a diagnosis of a right tibia fracture. Which part of the body is affected?

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

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

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

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

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

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

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

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

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?

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

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?

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

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

The next two questions are based on the following passage.

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 setup, 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 to all three and affects them simultaneously. Which of the following filter setups makes a more valid experiment and why?

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 setup, 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 types of experiments is described above?

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

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?

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?

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

2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O
The reaction above is an example of which of the following?

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

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

Which of the following distinguishes the isotopes of an element?

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

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

Which of the following correctly describes a strong acid?

A polar molecule always has

Which of the following elements has the largest atomic radius?

What is the mRNA sequence that would be transcribed from a strand of DNA with the nucleotide sequence TACAGCCC?

Which of the following statements is anatomically correct?

An organism has a total of thirty-six chromosomes. How many chromosomes will be in each of the organism’s gametes?

Which type of bond occurs when electrons are shared between two atoms?

What type of reaction is shown below?

HCl + NaOH → H₂O + NaCl

An individual who is heterozygous for a dominant trait is mated with an individual who is homozygous for the trait. What percentage of the offspring will be heterozygous for the trait?

Fifty percent of the offspring will be heterozygous for the trait.

Which component of an amino acid is unique?

What are the coefficients needed to balance the equation below?

__CaCl₂ + __Na₃PO₄ → __Ca₃(PO₄)₂ + __NaCl

During protein synthesis, the purpose of tRNA is to

Which of the following kills pathogens in the body by disrupting the functioning of their DNA or membranes?

Which of the following contains all the information necessary to produce a protein?

In RNA, the nucleotide guanine binds to