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ATI TEAS 7 SCIENCE LATEST VERSION
Question 1 of 50
Which of the following is NOT a function of the circulatory system?
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Correct
Incorrect
The circulatory system consists of the heart, blood vessels, lymph, lymph nodes, and blood
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It is also
responsible for transporting hormones and removing waste
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Question 2 of 50
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Crohn’s disease
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Diabetes
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Ulcerative colitis
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Diverticulosis
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The stomach, mouth, and esophagus all participate in
food digestion
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Diabetes is a disease of the endocrine system, that impacts the release of
insulin from the pancreas
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Question
Which item below best describes the primary function of the nervous system?
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Correct
The nervous system is the body’s communication center
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The digestive system breaks down food for
the body
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Question
Which of the following is NOT an element of the respiratory system?
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Correct
The respiratory system uses the lungs, diaphragm, trachea, alveoli and bronchi to help the body
distribute oxygen and remove carbon dioxide
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Question 5 of 50
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Neurons
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Dendritic cells
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Macrophages
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Mast cells
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Depending on the foreign element that enters the body, different cells respond to
attack the foreign element
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A neuron is a nerve cell that is central to the nervous
system and transmits nerve impulses
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Question
Which of the following is NOT one of the major types of bones in the human body?
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Correct
The human body has five types of bones: long bones, short bones, irregular bones, flat bones, and
sesamoid bones
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Question 7 of 50
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Long bones
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Sesamoid bones
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Flat bones
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Vertical bones
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Vertical bones, is not a major bone type
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Question 8 of 50
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Which lab equipment will the students most likely use?
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Correct
A triple beam balance would be used to measure the mass (in grams) of the gum in this experiment
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A hot plate is used to heat liquids
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Question 9 of 50
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Carbon dioxide
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Water
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Oxygen
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ATP
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While oxygen is a main component of the
respiratory system’s process, it is not produced by the respiratory system
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Question 10 of 50
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the aorta
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the vena cava
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the pulmonary artery
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the capillaries
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This blood then returns to the heart through the pulmonary
vein, and is carried through the aorta and a series of branching arteries to the capillaries, where the bulk
of gas exchange with the tissues occurs
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Since the pulmonary artery is the last step before replenishment of the blood’s oxygen content, it
contains the blood which is the most oxygen depleted
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Question
Which layer of the heart contains striated muscle fibers for contraction of the heart?
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Correct
The myocardium is the layer of the heart that contains the muscle fibers responsible for contraction
(Hint: myo- is the prefix for muscle)
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The pericardium is the sac in which the heart sits inside the chest cavity
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Question
Which blood vessel carries oxygenated blood back to the heart?
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Correct
While generally speaking, veins carry deoxygenated blood and arteries carry oxygenated blood, in this
case, the pulmonary veins carry oxygenated blood from the lungs to the left side of the heart and the
pulmonary arteries carry deoxygenated blood from the right side of the heart to the lungs
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The
superior vena cava returns unoxygenated blood back to the right side of the heart, to then be distributed
through the lungs and reoxygenated
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Question
Mrs
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What would be the independent variable in the cookie experiment?
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They should increase the baking time on
the artificial sweetener cookies, since the package instructs them to do so
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The students should use the same ingredients in both recipes, but increase the baking time on the
artificial sweetener cookies, since the package instructs them to do so
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The students should use the same ingredients, same baking temperatures, and same baking times
for both recipes
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The students should use the same ingredients and baking times in both recipes, but bake the
cookies with sugar at 450 degrees and the artificial sweetener cookies at 475 degrees
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The dependent variable results
from the experimenter making only one change to an experiment that can be repeated with the same
results
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Jones’s class was comparing the effects of sugar and artificial sweetener on the overall color
of cookies once they are baked; thus, the one thing that should be changed in the experiment is the
sugar and artificial sweetener in the recipe
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For the
experiment to be valid and not influenced by any other variables, the students should keep the
temperature and baking time the same, as these could affect the color of the cookies as well
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Question
Which part of the cell is often called the cell “power house” because it provides energy for cellular
functions?
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Correct
Mitochondria are often called the power house of the cell because they provide energy for the cell to
function
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The cell membrane surrounds the cell and
separates the cell from its environment
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Question 15 of 50
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Ribosomes are responsible for cell movement
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Ribosomes aid in protein synthesis
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Ribosomes help protect the cell from its environment
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Ribosomes have enzymes that help with digestion
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Cilia and flagella are responsible
for cell movement
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Lysosomes have digestive enzymes
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Question
What is the most likely reason that cells differentiate?
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Correct
Cells differentiate so that simple, less specialized cells can become highly specialized cells
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Cells begin as
simple zygotes after fertilization and then differentiate to form a myriad of complex tissues and systems
before birth
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Question
How is meiosis similar to mitosis?
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Correct
Both meiosis and mitosis occur in humans, animals, and plants
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Only mitosis occurs
asexually
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Question
In the suburban neighborhood of Northwoods, there have been large populations of deer, and residents
have complained about them eating flowers and garden plants
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Increased quantity of food sources in surrounding areas
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Decreased population of a natural predator in Northwoods
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Deer migration from surrounding areas
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Increase in hunting licenses sold
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In a population of deer that has increased, there would be a
natural decrease in a food source for the nutritional needs for the animals in surrounding areas
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An increase in hunting licenses would be used by local officials to try to
control the population, helping to decrease the number of adults of breeding age
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Question
How do DNA and RNA function together as part of the human genome?
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Correct
DNA is the primary carrier of genetic information in most cells
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Question 20 of 50
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mouth
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stomach
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small intestine
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large intestine
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Once in the stomach, enzymes are secreted that begin to digest the specific
substances in the food (proteins, carbohydrates, etc
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Question 21 of 50
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The DNA should quadruple so that daughter cells have more than enough DNA material after cell
division
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The DNA should triple so that daughter cells have three times the amount of DNA material after
cell division
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The DNA should replicate so that daughter cells have the same amount of DNA material after cell
division
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The DNA should split so that daughter cells have half the amount of DNA material after cell
division
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Therefore, the DNA
should replicate, or make an exact copy of itself, so that each daughter cell will have the full amount of
DNA
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Question
What basic molecular unit enables hereditary information to be transmitted from parent to offspring?
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Correct
Genes are the molecular units that enable parents to pass hereditary traits on to their offspring
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Question 23 of 50
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Both DNA and RNA have 4 nucleotide bases
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2
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However, the nucleotides bond differently
in the DNA when compared to RNA
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Both DNA and RNA have 6 nucleotide bases
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4
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However, DNA contains 6 nucleotide bases and
RNA contains 4 nucleotide bases
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Both DNA and RNA contain cytosine, guanine,
and adenine
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Choice B is incorrect because
DNA and RNA do not have the same 4 nucleotides, and choices C and D are incorrect because neither
DNA nor RNA contains 6 nucleotides
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Question 24 of 50
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Brown eyes that appear hazel in the sunlight
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CFTR genes that causes cystic fibrosis
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Black hair that grows rapidly
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Being a fast runner
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The phenotype describes a person’s observable
characteristics
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Question 25 of 50

25
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The following Punnett square represents the offspring of two people with recessive
genes for baldness
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Possibility 1
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Possibility 4
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Possibilities 1, 2, and 3
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Possibilities 2, 3, and 4
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Because male pattern baldness is a recessive gene, the offspring would need the bb gene combination in
order to inherit this trait
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Question 26 of 50
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The following Punnett square represents the offspring of two people with recessive
genes for baldness
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Possibility 1
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Possibility 4
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Possibilities 1, 2, and 3
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Possibilities 2, 3, and 4
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Because male pattern baldness is recessive, the offspring would need the bb gene combination in order
to inherit this trait
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Possibilities 1, 2,
and 3 all have the B gene
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Question
Where is the interstitial fluid found?
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Correct
Interstitial fluid is found in the tissues around the cells; intracellular fluid is found within the cells
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Cerebrospinal fluid
bathes these sensitive tissues in a fluid that helps to protect them
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Question 28 of 50

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Bacterial cell
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Viral cell
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Lymph cell
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Plasma cells
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These cells, also known as plasmacytes, are located in lymphoid tissue
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Antigens include bacteria, viruses, and parasites
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When faced with a new antigen, the body may require some time to develop
appropriate antibodies
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Question 29 of 50
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What is the effect of
chemical C?
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Correct
A catalyst increases the rate of a chemical reaction without becoming part of the net reaction
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The catalyst does not change the
chemicals within the reaction or initiate the reaction itself
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Question
What type of molecules are enzymes?

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Correct
Enzymes are protein molecules produced by living organisms
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Question 31 of 50
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Hypothalamus
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Adrenal gland
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Testes
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Pancreas
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This part of the brain
maintains the body temperature and helps to control metabolism
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The testes are the male
reproductive glands, responsible for the production of sperm and testosterone
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Question 32 of 50
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Alveoli
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Bronchi
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Larynx
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Pharynx
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The bronchi are large
cartilage-based tubes of air; they extend from the end of the trachea into the lungs, where they branch
apart
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The pharynx extends from the nose to the uppermost
portions of the trachea and esophagus
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Question 33 of 50
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trachea
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bronchi
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esophagus
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larynx
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The larynx houses the voice box; it also acts as a passageway for air to travel into the lungs
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The trachea splits into the right and left bronchi, which divide
into smaller passageways called the bronchioles
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Question
What lab equipment would most likely be used to measure a liquid solution?
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Correct

In order to have accurate measurements, the use of a graduated cylinder would be the best
measurement equipment for a liquid solution
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A flask and a test tube are used to contain a liquid while being heated or stored
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Question
An atom has 5 protons, 5 neutrons, and 6 electrons
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Neutral
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Positive
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Negative
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Undetermined
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Neutrons have no charge
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Because the atom has
more electrons than protons, the atom has a negative charge
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Question
All of the following are components of the genitourinary system EXCEPT:
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Correct
The genitourinary system is responsible for removing waste from the body through urine
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The rectum is the last section of the large intestine,
and part of the digestive system
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Question
Which of the following best describes the structures found underneath each rib in descending order?
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Correct

The neurovascular structure found under each rib in descending order is the vein, artery, and nerve
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Question 38 of 50
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" />
Which pattern below best describes the elements listed in the table?
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Correct

The atomic number equals the number of protons in an atom
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H has the fewest protons, as denoted by its atomic number of 1
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Question
Which of the following is true regarding the primary function of the spleen?
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Correct
The spleen’s job is to filter the blood by removing dead or dying red blood cells as well as
microorganisms
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Question 40 of 50
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freezing

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vaporization

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Correct
Vaporization is the process of changing from a liquid to a gas
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Freezing is the process of changing from a liquid to a solid
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Incorrect
Question 41 of 50
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Which tool would be the most helpful when the nurse conducts her investigation?
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Correct
The nurse wants to investigate her patients’ body temperatures
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Question 42 of 50
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Which of the following methods is most likely to help the
researcher gain usable information from the data?
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Correct
The researcher should use statistical analysis to understand trends in the data
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The researcher would probably miss important
correlations by looking at the individual data points, and eliminating most of the data would defeat the
purpose of conducting the study
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Question 43 of 50
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A scientist placed fresh food in a sealed container for an
extended period of time
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Based on this evidence, what is the most likely reason that spoiled food left out in the open often
contained fly larvae?

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Correct
Based on the evidence, the most likely explanation for fly larvae in the spoiled food is that flies laid their
eggs in the food
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However, when the food was in a sealed container, the flies could not lay their eggs in the food
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Question 44 of 50
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The average life expectancy in the 19th
century was about 40 years
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Advances in medical technology enable people to live longer
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Knowledge about how basic cleanliness can help avoid illness has enabled people to live longer
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The creation of various vaccines has enabled people to live longer
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All of the statements above offer reasonable explanations for longer life expectancy
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Advances in
medical technology, basic cleanliness, and vaccines could all help people live longer in the 21st century
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Question
A doctor needs to convince his boss to approve a test for a patient
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The patient looks like he needs this test
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The doctor feels that the patient needs this test
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The patient’s symptoms and health history suggest that this test will enable the correct diagnosis
to help the patient
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The patient has excellent insurance that will pay for several tests, and the doctor would like to run
as many tests as possible
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Discussing the patient’s appearance or the doctor’s feelings does not
communicate a scientific argument
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Question 46 of 50
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Lysozyme
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Prion
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Interferon
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Keratin
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Cytokines are specialized proteins
that carry signals between cells
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They signal neighboring cells to produce antiviral proteins which help prevent
the spread of infection
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Question
Which of the following does not contain blood vessels?
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Correct
Humans have three layers of skin called the epidermis, the dermis, and subcutaneous fat
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The epidermis does not contain blood vessels
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Question
What structure is responsible for the release of hormones that stimulate the gonads during puberty?
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Correct
The hypothalamus is a tiny gland at the base of the brain
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During puberty it secretes hormones that stimulate the gonads which
initiate sexual development
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Question
Which of the following structures has the lowest blood pressure?
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Correct

Of the given structures, veins have the lowest blood pressure
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An artery carries oxygen-rich blood from the heart to the

peripheral parts of the body
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A venule is a tiny vein
that extends from a capillary to a larger vein
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Question
Which of the heart chambers is the most muscular?
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Correct
Of the four heart chambers, the left ventricle is the most muscular
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The right ventricle pushes blood into the lungs
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The basic process works as follows: Oxygen-poor blood fills the right atrium and is pumped into the right
ventricle, from which it is pumped into the pulmonary artery and on to the lungs
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The blood then reenters the heart at the left atrium, which when full pumps into the left
ventricle
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