TEAS exam - version 7
A chemist finds a bottle of hydrochloric acid in his laboratory. Although the chemical is labeled properly, the
concentration is not included. He decides to determine the concentration of the acid by performing an acid-base
titration reaction. To perform this reaction, he adds a known volume and concentration of strong base to the acid
while measuring the pH of the combined acid and base. Once a neutral pH is obtained, the reaction has proceeded to
completion and the concentration of the acid may be calculated. In this reaction, what is the dependent variable? -
Correct Answer The dependent variable is the pH of the reaction mixture.
a descriptive, generalized body of scientific observations - Correct Answer law
A patient has recently been diagnosed with a bone marrow disorder that leads to slow blood clotting. The patient is
likely low in which of the following? - Correct Answer platelets
A scientist believes that a particular species of algae, S. sponferus, is able to grow even when living deep
underwater. However, he hypothesizes that this species may grow more slowly than algae in other environments due
to the lack of sunlight at this depth. Which of the following findings would not support the scientist's hypothesis? -
Correct Answer Laboratory experiments show that S. sponferus grows equally well under a wide range of light
conditions. (Your Answer)
A scientist does a monohybrid cross to determine how a trait is inherited and finds that the trait is mostly seen in male
offspring. What type of inheritance pattern does this gene show? - Correct Answer X-linked
A student isolates and purifies a substance. She then puts it into the lab refrigerator at 4°C. When she comes back
the next day, she notices that it has solidified. Which of the following statements about the substance is true? -
Correct Answer it has a freezing point higher than that of water.
A woman has been suffering from heartburn and thinks that a particular food is causing it. She decides that for each
week during a single month, she will not eat a specific food and see if she has heartburn that week. In her
experiment, the food she removes from her diet would be which of the following types of variable? - Correct Answer
independent variable
According to electron theory, which of the following is the maximum number of bonds a carbon atom can have? -
Correct Answer Carbon has four valence electrons, which means it is able to form 4 bonds with other atoms.
Alleles for brown eyes (B)are dominant over alleles for blue eyes (b). If two parents are both heterozygous for this
gene, what is the percent chance that their offspring will have brown eyes? - Correct Answer 75
An individual who is heterozygous for a recessive trait is mated with an individual who is homozygous for the trait.
What percentage of offspring will express the recessive trait? - Correct Answer 50 percent
an organisms genotype is ... - Correct Answer their complete genetic code
appendage of a neuron that sends electrical signals away from the neuron cells - Correct Answer axon
bone type that makes up the wrist and foot - Correct Answer short
connective tissue that connects bone to bone and helps strengthen joints - Correct Answer ligament
describe a scientific model - Correct Answer a simplification or metaphor for an observed phenomenon
digestion begins in which organ - Correct Answer the mouth
DNA and RNA are built from monomers called? - Correct Answer nucleotides
general term for a chemical substance that the body produces and transports through the blood to stimulate a cellular
response - Correct Answer hormone
, hormone released by the kidneys and helps regulate blood pressure - Correct Answer renin
how does a catalyst speed up a reaction - Correct Answer lowering the activation energy by providing an alternate
route for the reaction
How many electrons can the 2s orbital hold? - Correct Answer 2
How many electrons does a neutral atom of vanadium (V) have? - Correct Answer 23
If a plant that is homozygous dominant (T) for a trait is crossed with a plant that is homozygous recessive (t) for the
same trait, what will be the phenotype of the offspring if the trait follows Mendelian patterns of inheritance? - Correct
Answer All offspring will show the dominant phenotype.
In the digestive system, the majority of nutrients are absorbed in which of the following organs? - Correct Answer
small intestine
layer of skin with the most blood vessels - Correct Answer dermis
material that is secreted into hair follicles to waterproof and lubricate the skin - Correct Answer sebum .. CBUM
Mitochondrial myopathy, a mitochondrial disease that leads to low energy, heart issues, and kidney problems,
happens when a cytosine is replaced by a thymine. What type of mutation causes mitochondrial myopathy? - Correct
Answer point mutation
mutation that occurs in the DNA of a non-reproductive cell - Correct Answer somatic mutation
networks of capillaries that begins the filtration process by filtering blood plasma, the result of which is then excreted
as urine? - Correct Answer glomerulus
parts of the nervous system responsible for regulating involuntary muscle functions - Correct Answer autonomic
nervous sytem
People who suffer from Type I diabetes are lacking function in which of the following organs? - Correct Answer
pancreas
primary muscle that drives ventilation - Correct Answer diaphragm
process of transporting molecules across a membrane by a protein that does not use energy - Correct Answer
facilitated diffusion
property from RNA that makes it different from DNA - Correct Answer RNA contains uracil
structure of the male reproductive system that stores spermatozoa during the maturation process - Correct Answer
epididymis
the atomic number represents the number of ________ - Correct Answer protons in an atom
the exchange of gases and blood happens in what part of the respiratory system - Correct Answer alveoli
the largest branch of the abdominal aorta which supplies oxygenated blood to the upper digestive tract - Correct
Answer celiac artery
The rectum is a part of which of the following organs? - Correct Answer large intestine
Tin-112 (Sn-112) is the most abundant isotope of tin (Sn) and has a mass number of 112. How many neutrons does
Sn-112 have? - Correct Answer 62
What gland provides nourishment for sperm, as well as the majority of the fluid that combines with sperm to form
semen? - Correct Answer seminal vesicles
A chemist finds a bottle of hydrochloric acid in his laboratory. Although the chemical is labeled properly, the
concentration is not included. He decides to determine the concentration of the acid by performing an acid-base
titration reaction. To perform this reaction, he adds a known volume and concentration of strong base to the acid
while measuring the pH of the combined acid and base. Once a neutral pH is obtained, the reaction has proceeded to
completion and the concentration of the acid may be calculated. In this reaction, what is the dependent variable? -
Correct Answer The dependent variable is the pH of the reaction mixture.
a descriptive, generalized body of scientific observations - Correct Answer law
A patient has recently been diagnosed with a bone marrow disorder that leads to slow blood clotting. The patient is
likely low in which of the following? - Correct Answer platelets
A scientist believes that a particular species of algae, S. sponferus, is able to grow even when living deep
underwater. However, he hypothesizes that this species may grow more slowly than algae in other environments due
to the lack of sunlight at this depth. Which of the following findings would not support the scientist's hypothesis? -
Correct Answer Laboratory experiments show that S. sponferus grows equally well under a wide range of light
conditions. (Your Answer)
A scientist does a monohybrid cross to determine how a trait is inherited and finds that the trait is mostly seen in male
offspring. What type of inheritance pattern does this gene show? - Correct Answer X-linked
A student isolates and purifies a substance. She then puts it into the lab refrigerator at 4°C. When she comes back
the next day, she notices that it has solidified. Which of the following statements about the substance is true? -
Correct Answer it has a freezing point higher than that of water.
A woman has been suffering from heartburn and thinks that a particular food is causing it. She decides that for each
week during a single month, she will not eat a specific food and see if she has heartburn that week. In her
experiment, the food she removes from her diet would be which of the following types of variable? - Correct Answer
independent variable
According to electron theory, which of the following is the maximum number of bonds a carbon atom can have? -
Correct Answer Carbon has four valence electrons, which means it is able to form 4 bonds with other atoms.
Alleles for brown eyes (B)are dominant over alleles for blue eyes (b). If two parents are both heterozygous for this
gene, what is the percent chance that their offspring will have brown eyes? - Correct Answer 75
An individual who is heterozygous for a recessive trait is mated with an individual who is homozygous for the trait.
What percentage of offspring will express the recessive trait? - Correct Answer 50 percent
an organisms genotype is ... - Correct Answer their complete genetic code
appendage of a neuron that sends electrical signals away from the neuron cells - Correct Answer axon
bone type that makes up the wrist and foot - Correct Answer short
connective tissue that connects bone to bone and helps strengthen joints - Correct Answer ligament
describe a scientific model - Correct Answer a simplification or metaphor for an observed phenomenon
digestion begins in which organ - Correct Answer the mouth
DNA and RNA are built from monomers called? - Correct Answer nucleotides
general term for a chemical substance that the body produces and transports through the blood to stimulate a cellular
response - Correct Answer hormone
, hormone released by the kidneys and helps regulate blood pressure - Correct Answer renin
how does a catalyst speed up a reaction - Correct Answer lowering the activation energy by providing an alternate
route for the reaction
How many electrons can the 2s orbital hold? - Correct Answer 2
How many electrons does a neutral atom of vanadium (V) have? - Correct Answer 23
If a plant that is homozygous dominant (T) for a trait is crossed with a plant that is homozygous recessive (t) for the
same trait, what will be the phenotype of the offspring if the trait follows Mendelian patterns of inheritance? - Correct
Answer All offspring will show the dominant phenotype.
In the digestive system, the majority of nutrients are absorbed in which of the following organs? - Correct Answer
small intestine
layer of skin with the most blood vessels - Correct Answer dermis
material that is secreted into hair follicles to waterproof and lubricate the skin - Correct Answer sebum .. CBUM
Mitochondrial myopathy, a mitochondrial disease that leads to low energy, heart issues, and kidney problems,
happens when a cytosine is replaced by a thymine. What type of mutation causes mitochondrial myopathy? - Correct
Answer point mutation
mutation that occurs in the DNA of a non-reproductive cell - Correct Answer somatic mutation
networks of capillaries that begins the filtration process by filtering blood plasma, the result of which is then excreted
as urine? - Correct Answer glomerulus
parts of the nervous system responsible for regulating involuntary muscle functions - Correct Answer autonomic
nervous sytem
People who suffer from Type I diabetes are lacking function in which of the following organs? - Correct Answer
pancreas
primary muscle that drives ventilation - Correct Answer diaphragm
process of transporting molecules across a membrane by a protein that does not use energy - Correct Answer
facilitated diffusion
property from RNA that makes it different from DNA - Correct Answer RNA contains uracil
structure of the male reproductive system that stores spermatozoa during the maturation process - Correct Answer
epididymis
the atomic number represents the number of ________ - Correct Answer protons in an atom
the exchange of gases and blood happens in what part of the respiratory system - Correct Answer alveoli
the largest branch of the abdominal aorta which supplies oxygenated blood to the upper digestive tract - Correct
Answer celiac artery
The rectum is a part of which of the following organs? - Correct Answer large intestine
Tin-112 (Sn-112) is the most abundant isotope of tin (Sn) and has a mass number of 112. How many neutrons does
Sn-112 have? - Correct Answer 62
What gland provides nourishment for sperm, as well as the majority of the fluid that combines with sperm to form
semen? - Correct Answer seminal vesicles
