TEAS practice test (science portion)

Breakdown of what begins in the small intestine?

a) protein

b) fats

c) fiber

d) carbohydrates

Fats

Water undergoes relatively minor temperature and phase changes compared to other substances due to both its what?

a) low specific heat and low vaporization

b) low specific heat and high heat vaporization

c) high specific heat and low heat of vaporization

d) high specific heat and high heat of vaporization

High specific heat and high heat of vaporization

What is an example of hydrocarbons containing double bonds?

a) C2H6

b) C4H8

c) C6H10

d) C8H12

C4H8

What represents the correct order of scientific process?

a) hypothesis, data, analysis

b) hypothesis, analysis, data

c) data, hypothesis, analysis

d) data, analysis, hypothesis

Hypothesis, data, analysis

In geology, what is considered a significant departure from previous ideas?

a) ideology

b) theoretical refinement

c) a paradigm shift

d) model adjustment

A paradigm shift

What describes the increase in alleles that permits a species to survive and reproduce better in an environment from generation to generation?

a) DNA

b) Genetic drift

c) Mutation

d) adaptation

Adaptation

What nervous systems directs the bodies flight or flight response?

a) peripheral

b) central

c) parasympathetic

d) sympathetic

Sympathetic

What is used in quantitative investigations?

a) sensory information

b) numerical information

c) phenomenological research

d) ethnographic research

Numerical information

Which of the following taxonomic ranks is the most general? Order, genus, phylum, family

a) order

b) genus

c) phylum

d) family

Phylum

What organ system supplies the body cells with oxygen and nutrients?

a) cardiovascular

b) digestive

c) nervous

d) immune

Cardiovascular

Through what does blood pass after leaving the right ventricle during contraction of the heart?

a) aorta

b) pulmonary artery

c) vena cava

d) mitral valve

Pulmonary artery

What organ system supplies the body with oxygen and removes carbon dioxide?

a) integumentary

b) endocrine

c) respiratory

d) renal

Respiratory

What is responsible for the peristalsis that occurs in the digestive tract?

a) smooth muscle

b) skeletal muscle

c) connective tissue

d) subcutaneous tissue

Smooth muscle

A proton should have what two characteristics when compared to the charge and the mass of an electron?

a) the same charge and the same mass

b) the same charge and larger mass

c) an opposite charge and same mass

d) an opposite charge and larger mass

An opposite charge and a larger mass

The spine is part of what system?

a) lymphatic

b) nervous

c) skeletal

d) endocrine

Skeletal

If two gases (A and B) that have detectable odors and the same temperature are released simultaneously on one side of a room, and the odor of Gas A is noticed one minute before that of Gas B, what conclusion can be made?

a) gas A has higher density than gas B

b) gas B has higher density than gas A

c) The opening in the container of Gas A is larger than that of Gas B

d) The opening in the container of Gas B is larger than that of Gas A

Gas B has a higher density than Gas A

What describes a substance that is completely ionized in its solution and has a pH of 2?

a) strong acid

b) strong base

c) weak acid

d) weak base

Strong acid

What organs are immune cells produced ?

a) tonsils

b) spleen

c) lymph nodes

d) bone marrow

Bone marrow

A research student is determining the pollen count for a 24-hour period in a given location. The students data would be most reliable if he decided to count the pollen in what?

a) a single decimeter square for one morning and one afternoon

b) multiple decimeter squares for one morning and one afternoon

c) a single decimeter square for one afternoon

d) multiple decimeter squares for one afternoon

Multiple decimeter squares for one morning and one afternoon

The heart is located ________ the sternum ?

a) to the right of

b) to the left of

c) behind

d) in front of

Behind

Exchange of oxygen occurs in what structure of the respiratory system?

a) alveoli

b) bronchioles

c) trachea

d) pleura

Alveoli

What is true of fertility rates in less developed countries?

a) they are lower in less-developed countries

b) they are higher in less-developed countries

c) they are higher in more-developed countries

d) they are the same in more-developed and less developed countries

The fertility rates are higher in less-developed countries

Enzyme activity is driven by what internal factor?

a) pH

b) temperature

c) substrate concentration

d) amino acid structure

Amino acid structure

A new organism has been recently discovered in the ocean. All that is known of the organism's cell structure is that it lacks a membrane bound nucleus. Which of the following indicates how this organism will be classified in terms of cell type ?

a) plant

b) animal

c) Prokaryote

d) Fungus

Prokaryote

In which of the following do mutations in human DNA originate?

a) protein

b) mitochondria

c) phenotype

d) genotype

Genotype

Which of the following organelles found in heterotrophs is similar to the chloroplast?

a) vacuole

b) nucleus

c) lysosome

d) mitochondria

Mitochondria

Which of the following organelles gives rough endoplasmic reticulum its signature rough characteristic?

a) ribosomes

b) mitochondria

c) centrosomes

d) vacuoles

Ribosomes

DNA is to genes, as amino acids are to ______?

a) cells

b) ribosomes

c) rna

d) protein

Protein

Atoms having ___ bonds complete one another by the donation and acceptance of electrons to form stable outer electron shells

a) ionic

b) covalent

c) metallic

d) van der waals

Ionic

Mutations in what cells can be passed on to future generations?

a) brain cells

b) germ cells

c) skin cells

d) nerve cells

Germ cells

DNA codons encode which of the following?

a) blood

b) neurons

c) amino acids

d) cell walls

Cell walls

During cell replication, which material is duplicated by polymerase enzymes?

a) water

b) protein

c) RNA

d) DNA

DNA

What nitrogenous base is unique to RNA?

a) uracil

b) guanine

c) thymine

d) adenine

Uracil

A research student predicts that rats raised in a stimulating environment will learn faster than rats raised in an isolated environment. This prediction corresponds with which of the following steps in the scientific method?

a) formulating a hypothesis

b) conducting an experiment

c) analyzing the results

d) drawing a conclusion

Formulating a hypothesis

Meiosis occurs in which of the following cells?

a) germ cells

b) skin cells

c) blood cells

d) brain cells

Germ cells

The liquid state of a substance is considered to have a ___ shape and a ___ volume.

a) fixed, fixed

b) fixed, changing

c) changing, fixed

d) changing, changing

Changing; fixed

A researcher conducts a study to examine the effects that time spent in extracurricular involvement has on college entrance exam scores. In this study, extra-curricular involvement is what type of variable?

a) dependent

b) independent

c) extraneous

d) qualitative

Independent

When an automobile traveling at 60 miles per hour is brought to a rapid stop, the two types of energy most involved are what?

a) potential and heat

b) potential and kinetic

c) kinetic and chemical

d) kinetic and heat

Kinetic and heat

When examining electronegativity values, which atoms will form the least polar bond with hydrogen?

a) hydrogen

b) fluorine

c) chlorine

d) bromine

Hydrogen

Which of the following elements is the best electrical conductor?

a) Bromine,

b) arsenic

c) carbon

d) potassium

Potassium

A large saturated hydrocarbon will contain ___

a) the same number of hydrocarbon

b) exactly twice as many hydrogen atoms as carbon atoms

c) less than twice as many hydrogen atoms as carbon atoms

d) more than twice as many hydrogen atoms as carbon atoms

More than twice as many hydrogen atoms as carbon atoms

___ are at a higher taxonomic level of organization than ___

a) organs, organ system

b) cells, molecules

c) atoms, molecules

d) tissues, organs

Cells; molecules

Which of the following is needed for cellular waste recycling?

a) centrosome

b) lysosome

c) chromosome

d) golgi apparatus

Lysosome

Which of the following system includes organs between the mouth and anus?

a) respiratory

b) digestive

c) endocrine

d) skeletal

Digestive

Which of the following describes how a Punnett square help predict the genotype of the offspring if the alleles of both parents are known?

a) provides information on dominant traits in the parents

b) shows what genotypes are possible in the offspring

c) provides probabilities of getting an incomplete dominance

d) shows exactly what genotypes will occur in offspring

Shows what genotypes are possible in the offspring

A substance with a pH of 7.0 when dissolved in water is?

a) strong acid

b) weak base

c) weak acid

d) neutral substance

A neutral substance

Which of the following by-products of cellular respiration is used by autotrophs in the production of glucose?

a) ATP

b) Carbon dioxide

c) chlorophyll

d) Oxygen

Carbon dioxide

A certain disease is carried on the allele (a) which is recessive to the normal condition (A). If a normal (AA) male meet with a female who has the disease (aa), what is the percentage of offspring that are carriers of the disease?

a) 0%

b) 25%

c) 75%

d) 100%

100%

The pancreas is a component of which system?

a) lymphatic

b) nervous

c) endocrine

d) muscular

Endocrine

Which of the following types of bond is primarily responsible for base pairing in complementary strands of DNA?

a) ionic

b) covalent

c) dative

d) hydrogen

Hydrogen

A cell uses which of the following as the first-line of defense against mutations during DNA replication?

a) cell death

b) excision repair

c) mismatch repair

d) DNA polymerase proofreading

DNA polymerase proofreading

After passing through the stomach, food enters into what structure?

a) duodenum

b) jejunum

c) ileum

d) cecum

Duodenum

Which of the following is the term given to multiple forms of a gene that are produced by mutation?

a) adaptation

b) DNA

c) allele

d) natural selection

Allele

During mitosis and cell division, spindle fibers are associated with what organelle?

a) centrosomes

b) lysosomes

c) mitochondria

d) vacuoles

Centrosome

In which of the following parts of the gastrointestinal tract does that absorption of water primarily occur?

a) stomach

b) small intestine

c) cecum

d) colon

Colon

During which of the following stages of development do individual tissue layers begin to form?

a) embryo formation

b) zygote development

c) gastrulation

d) differentiation

Gastrulation

Which of the following represents the number of different cells formed upon completion of mitosis II?

a) 1

b) 2

c) 3

d) 4

4

Which of the following is a property of bases?

a) tastes sour

b) dissolves metal

c) turns blue litmus paper red

d) liberates OH- in solution

Liberates OH- in solution

During which of the following stage of interphase is mRNA synthesized?

a) G1

b) Prophase

c) S

d) M

G1

A harmful example of a catalytic reaction involves the breakdown of ozone by use of_______

a) chlorine ions

b) fluorine ions

c) manganese dioxide

d) rhodium

Chlorine ions

Phenotypes are seen due to the production of ___ from the genotypic code found in the cell nucleus

a) cell membranes

b) golgi bodies

c) lysosomes

d) proteins

Proteins

Receiving a vaccination against a particular disease results in which of the following types of immunity?

a) passive

b) active

c) humoral

d) cell-mediated

Active

The veins of the upper part of the body are responsible for transporting blood to what area of the heart?

a) superior vena cava

b) inferior vena cava

c) ascending aorta

d) descending aorta

Superior vena cava

The spleen and thoracic duct are part of which system?

a) endocrine

b) reproductive

c) lymphatic

d) urinary

Lymphatic

Nucleotides are to DNA as amino acids are to ____?

a) proteins

b) ribosomes

c) RNA

d) cells

Protein

Which of the following taxonomic ranks are the most specific?

a) class

b) domain

c) kingdom

d) species

Species

For a given substance, the gas phase (compared to the liquid phase) is considered to have ___ intermolecular attractions and to exist at ___ temperatures

a) weaker, higher

b) weaker, lower

c) stronger, higher

d) stronger, lower

Weaker; higher

Which of the following pulls air into the body during inspiration?

a) diaphragm

b) trachea

c) bronchioles

d) pleura

Diaphragm

Which of the following is the chemical formula for octyne?

a) C8H12

b) C8H14

c) C8H16

d) C8H18

C8H14

Which of the following describes how inhibitors affect the reaction rate of enzymes?

a) They cause violent collisions, which in turn case substrate molecule to break

b) They have little to no affect on reaction rates

c) They block the active sites of substrate, causing greatly reduced activity

d) They cause reverse reactions to act similarly to forward reactions so that equilibrium is maintained

They block the active site of the substrate, causing greatly reduced activity

Water's ___ bonding results in a ___ ratio of hydrogen to oxygen

a) ionic, 1:2

b) ionic, 2:1

c) covalent, 1:2

d) covalent, 2:1

Covalent; 2:1

During which process does RNA relay information to the ribosomes?

a) translation

b) transcription

c) mitosis

d) double-helix formation

Translation

In which of the following is urine stored?

a) ureter

b) prostate

c) bladder

d) kidneys

Bladder

In a medication study population A is given the medication, and population B is given a placebo. What describes population B?

a) control group

b) treatment group

c) dependent variable

d) independent variable

Control group

What organ produces bile that begins the breakdown of fat?

a) gallbladder

b) liver

c) pancreas

d) kidneys

Liver

2 reasons for conducting scientific investigations

Establishing procedures. Involving quality of life.

An example of an investigation that has led to radically new designs that improve the quality of life

Prosthetics, organs

List the six parts of a scientific argument

Problem identification. Question asking. Hypothesis development. Data collection and experimentation. Analysis. Conclusion.

How does a scientific argument change over time?

A bias may be shown, or results can not be repeated

Give two reasons why scientific research is dependent on technology

Data is recorded in numbers. Relationships are established by graphs and formulas. Numerical models are used to describe mathematical relationship.

Without mathematics, scientific research would not be possible. Explain why this is true.

If mathematics were not used, scientific descriptions would be purely qualitative in nature.

Describe how mathematics and science have increased communication in the corporate world.

Fiber optics have increased communication speed and processing time.

List two industries that benefit from advancement of mathematical and technological skills.

Forensics, cosmology, meteorology

What is deductive reasoning ?

Deductive reasoning is when conclusion follow a general principle

What is inductive reasoning ?

Inductive reasoning is when conclusions are formed from specific facts

Where on the body can epithelial tissue be found?

Skin

Where on the body can connective tissue be found?

Bone

Where on the body can muscle tissue be found?

Heart

Where on the body can nervous tissue be found?

Brain

The smallest parts of elements that can still retain all the original properties of the element

Atoms

A chemical bonding of atoms that possesses its own characteristics independent of the atoms themselves

Molecule

Specific molecules combining form what?

Cells

What are cells also known as?

The basic unit of all life

Cells combine in terms of function and type to form what?

Tissues

2 or more tissue types work together to perform a specific function at what level?

The organ level

What performs extremely complex functions?

Organs

When organs work together to perform a task the result is what?

Organ system

How many organ systems are there in the human body?

11

What is the highest level of organization?

Organism

What is the result of all organ systems working together within the body?

Organism