TEAS Science

Question 1 of 60

An unknown element is found to contain 45 protons and an atomic mass of 64, what is its atomic number?

It cannot be determined.
19
45
64

Question 2 of 60

The square above is based on the eye color of two parents, one of whom has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?

0%
25%
50%
100%

Question 3 of 60

The spleen functions are part of the _____ system.

Which of the following completes the sentence above?

digestive
lymphatic
endocrine
circulatory

Question 4 of 60

Which of the following is an example of deductive reasoning?

Only 21% of a town’s population have expressed a desire to ban all cars. Therefore, the new proposition banning cars in the state is not likely to pass.
People who brush their teeth regularly have fewer instances of heart disease. Therefore, good dentistry can prevent heart attacks.
All soccer players who play professionally can kick well. Therefore, any future soccer player who is recruited to play professionally will be able to kick well.
All secretaries are good typists. Cynthia is a secretary. Therefore, Cynthia is a good typist.

Question 5 of 60

Which of the following is a possible cause of herniation of discs?

hepatitis
whiplash
plantar fasciitis
ulcer

Question 6 of 60

Which of the following is a characteristic of the autonomic nervous system?

It regulates the voluntary control of body movements through the skeletal muscles.
It is the part of the nervous system consisting of the brain and spinal cord.
It regulates involuntary activity in the heart, stomach, lungs, and intestines.
It is thought to be the center of intelligence.

Question 7 of 60

During photosynthesis, which two compounds are combined to create the output of glucose and oxygen?

Carbon dioxide and water.
Carbon dioxide and bicarbonate.
Bicarbonate and water.
Carbon dioxide and multiple alkaline substances.

Question 8 of 60

Questions 8 & 9 are based on the following diagram:

Which of the following is true about the frog?

It is a member of the salamandridae family.
It is a type of amphibian.
It is a non-vertebrate.
It is closer to most tetrapods than to most newts.

Question 9 of 60

Which statement can be inferred about amphibians?

All amphibians are salamandridae, but not all salamandridae are amphibians.
Some amphibians are vertebrates, but not all amphibians are vertebrates.
Some salamandridae are amphibians, but not all amphibians are tetrapods.
All amphibians are vertebrates, but not all vertebrates are amphibians.

Question 10 of 60

What would this diagram be useful for?

determining outcomes for potential infection
diagnosing an infectious disease
controlling the spread of disease in undeveloped countries
training nurses to detect early onset symptoms of disease

Question 11 of 60

What type of bond between the complementary bases of DNA stabilizes the double helix structure?

covalent
ionic
hydrogen
nuclear

Question 12 of 60

Which of the following subatomic particles are found inside of an atom’s nucleus?

electrons, neutrons, protons
neutrons, protons
electrons, protons
electrons

Question 13 of 60

Which of the following statements is true regarding trophic levels?

Tertiary consumers acquire more energy content than secondary consumers.
Producers acquire less energy than primary consumers.
Secondary consumers acquire more energy than primary consumers.
Tertiary consumers acquire less energy than primary consumers.

Question 14 of 60

Why does the human eye perceive a red colored dress as the color red?

The molecules of the dress do not absorb red light wavelengths.
The molecules of the dress absorb green and blue light wavelengths.
A red dress will primarily absorb red light wavelengths.
A red dress will not absorb light wavelengths from non-red colors.

Question 15 of 60

In a lab experiment designed to test the rate at which plants grow under artificial light, the kind of light used is which type of variable?

dependent
independent
random
responding

Question 16 of 60

Which organ system is primarily responsible for regulating metabolism, mood, and growth?

respiratory system
digestive system
endocrine system
lymphatic system

Question 17 of 60

In a vacuum, why doesn’t an elephant accelerate faster than a penny as it falls to the ground?

Vector components of an elephant are more complex than those of a penny.
An elephant is not a projectile, while a penny is.
They both have an acceleration of 9.8 m/s2.
The elephant is greater in mass but is slowed less by the effects of air resistance.

Question 18 of 60

Which train described below would have the greatest momentum?

A 9500 kg train car moving at 200 mph
An 8000 kg train car moving at 215 mph
A 9300 kg train car moving at 190 mph
A 8600 kg train car mobbing at 195 mph

Question 19 of 60

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased. The type of correlation between these two populations could best be described as

a direct relationship.
an inverse relationship.
a direct and indirect relationship.
no decisive relationship.

Question 20 of 60

The addition of a catalyst to a chemical reaction will have what effect?

Increase the energy required for the reaction to take place.
Increase the time required for the reaction to take place.
Increase the rate at which the reaction takes place.
Reduce the amount of products in the reaction.

Question 21 of 60

The pharynx is part of what body system?

respiratory
muscular
lymphatic
circulatory

Question 22 of 60

Which of the following is true about eukaryotic cells?

They do not contain lysosomes.
They contain one chromosome.
They do not contain a nucleus.
They contain mitochondria.

Question 23 of 60

What characteristic of an element determines its specific isotope?

Number of protons.
Number of neutrons.
Number of electrons.
Number of quarks.

Question 24 of 60

What is NOT true about RNA?

It contains a sugar called ribose.
Thymine is not one of its base pairings.
It is unstable in alkaline conditions.
Its sugar is more reduced than DNA’s sugar.

Question 25 of 60

Which of the following scenarios would NOT give a normal distribution?

A distribution of the yearly income of families in the U.S.
The distribution of heights in a large sample of people.
The percentage of toxic wastes and pollution in the atmosphere vs. the lifespan of organisms in the location.
A curve with 97% of the population within the first two standard deviations.

Question 26 of 60

In a cell, the Golgi apparatus is found in what location?

Inside the nucleus
Inside the mitochondria
In the cell wall
In the cytoplasm

Question 27 of 60

Which taxonomic rank is the next-smallest after Order?

Phylum
Family
Species
Genus

Question 28 of 60

In plants, ________ involves the formation of a _____?

cytokinesis, cleavage furrow
telophase, cell plate
cytokinesis, cell plate
prophase, DNA

Question 29 of 60

Which base is NOT found in DNA?

guanine
cytosine
uracil
adenine

Question 30 of 60

Which of the following layers of the atmosphere is the closest to space?

troposphere
stratosphere
mesosphere
thermosphere

Question 31 of 60

Which is NOT one of the four basic types of tissue?

parenchyma
epithelial
nervous
connective

Question 32 of 60

The stomach is _____ to the small intestine.

Which of the following correctly completes the sentence above?

lateral
superior
posterior
proximal

Question 33 of 60

Which of the following is the atomic mass of an atom containing 42 protons, 42 electrons, and 37 neutrons?

42
79
84
121

Question 34 of 60

A patient who has suffered head trauma is not able to recognize people he has met around an hour earlier but is still able to recognize people he met before the injury. He most likely has damage to the:

Medulla Oblongata
Corpus Callosum
Hippocampus
Pituitary Gland

Question 35 of 60

What process is illustrated in the diagram above?

meiosis
mitosis
replication
codification

Question 36 of 60

Of the following, which is not a type of chemical bond?

ionic
covalent
polar
magnetic

Question 37 of 60

If the amount of hydrogen in a balloon of fixed size is doubled, what happens to the mass and density of the balloon?

The mass and density both decrease.
The mass increases, but the density decreases.
The mass decreases, but the density increases.
The mass and density both increase.

Question 38 of 60

If you have 200 mL of a 60% sodium chloride solution, how much NaCl is dissolved in the solution?

20 g
50 g
80 g
120 g

Question 39 of 60

How many carbon dioxide molecules are required to balance the following reaction:

4C₆H₁₂O₆ + 24O₂ → __CO₂ + 24H₂O + Energy

4
8
16
24

Question 40 of 60

The graph above records the death rate of two types of male flies a certain number of days after a chemical pesticide is sprayed. What is the probability a male methuselah fly will be alive 75 days after exposure to the pesticide?

1/2
1/3
1/4
1/5

Question 41 of 60

A scientist wants to write an equation using the variables X, Y, and Z. What is the proper relationship between the variables if X represents time, Y represents energy, and Z represents power?

2XY = Z
XZ = 2Y
Z = X/Y
Z = Y/X

Question 42 of 60

What type of correlation is presented between price and quality?

strong direct correlation
weak direct correlation
strong indirect correlation
no correlation

Question 43 of 60

What type of cells result from mitosis?

one diploid cell
two haploid cells
two diploid cells
four haploid cells

Question 44 of 60

Cheetahs, rainbow trout, and inchworms belong to the same

Kingdom
Phylum
Class
Order

Question 45 of 60

The presence of which hormone would NOT cause an increase in water retention?

Renin
ANP
ADH
Aldosterone

Question 46 of 60

In which part of the heart does oxygenated blood flow out of?

Right ventricle
Left ventricle
Right atrium
Left atrium

Question 47 of 60

Which of the following hormones are secreted directly by the hypothalamus?

melatonin
oxytocin
dopamine
calcitonin

Question 48 of 60

Which of the following terms do these diagrams NOT portray?

Active transport
Facilitated Transport
Antiporter
Ion Channel

Question 49 of 60

Which vitamin is mainly synthesized within the human body?

vitamin E
vitamin C
vitamin D
vitamin A

Question 50 of 60

Trypsinogen, an enzyme secreted by the pancreas, is activated into trypsin in the duodenum by which enzyme?

enterokinase
protease
hydrochloric acid
pepsin

Question 51 of 60

Follicle-stimulating hormone (FSH), which is responsible for maturation of follicles in the ovary, is produced by which gland in the body?

ovary
corpus luteum
anterior lobe of pituitary gland
posterior lobe of pituitary gland

Question 52 of 60

In a chemical reaction:

sulfuric acid + substance X = salt + water + carbon dioxide

What could substance X be?

potassium
sodium carbonate
magnesium hydroxide
copper(II) oxide

Question 53 of 60

A ball is tied to a rope and a boy is moving it in a circle around him with constant speed. Which of these statements about the ball is true?

There is no acceleration.
The force on the ball is acting at a tangent to the circle.
The force on the ball is acting toward the center of circle.
The force on the ball is acting away from the center of the circle.

Question 54 of 60

Which of these make up a macromolecule of fat?

one glycerol molecule and three fatty acid molecules
one glycerol molecule, one sugar molecule, and two fatty acid molecules
one glycerol molecule, one phosphate molecule, and two fatty acid molecules
one ester molecule and two fatty acid molecules

Question 55 of 60

Fill in the blanks:

Enzymes are ____ that work best at ____ pH or temperature.

chemical substances, moderate
biological catalysts, optimum
inorganic catalysts, maximum
organic catalysts, minimum

Question 56 of 60

Which of these statements regarding the process of fermentation is true?

It is an example of an anaerobic process where bacteria act on a protein solution to produce carbon dioxide and alcohol.
It is an example of tissue respiration where yeast acts on carbohydrates to produce oxygen and alcohol.
It is an example of an aerobic process where yeast acts on a sugar solution to produce oxygen and alcohol.
It is an example of an anaerobic process where yeast acts on a sugar solution to produce carbon dioxide and alcohol.

Question 57 of 60

Which of these statements regarding the “oxygen debt” created during heavy exercise is true?

Oxygen debt is created due to build-up of lactic acid in the liver, which needs a high level of oxygen to be stored.
Oxygen debt is created due to build-up of acetic acid in the muscles, which needs a high level of oxygen to be oxidized.
Oxygen debt is created due to build-up of lactic acid in the muscles, which needs a high level of carbon dioxide to be oxidized.
Oxygen debt is created due to build-up of lactic acid in the muscles, which needs a high level of oxygen to be oxidized.

Question 58 of 60

Which of these statements regarding facilitated diffusion across a cell membrane is true?

It is a kind of active transport (i.e., does directly use energy such as hydrolysis of ATP) that requires transmembrane/carrier proteins.
It is a kind of passive transport (i.e., does not directly use energy such as hydrolysis of ATP) that requires transmembrane/carrier proteins.
It is a kind of active transport (i.e., does directly use energy such as hydrolysis of ATP) that requires protein pumps.
It is a kind of passive transport (i.e., does not directly use energy such as hydrolysis of ATP) that does not require transmembrane/carrier proteins.

Question 59 of 60

Phalanges are bones present in which parts of the body?

fingers and toes
fingers only
ears
cranium/skull

Question 60 of 60

Which statement regarding ball and socket joints is true?

Ball and socket joints are multi-axial joints, which are highly mobile, allowing movement in multiple axes and planes.
Ball and socket joints are uni-axial joints, which are highly mobile, allowing rotation around a central axis.
Ball and socket joints are uni-axial joints, which are mobile, allowing movement in a single axis and plane.
Ball and socket joints are bi-axial joints, which are mobile, allowing movement in two planes.

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