TEAS Practice Test (Science Portion) Part 1

Breakdown of what begins in the small intestine?
a) protein
b) fats
c) fiber
d) carbohydrates

In geology, what is considered a significant departure from previous ideas?
a) ideology
b) theoretical refinement
c) a paradigm shift
d) model adjustment

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

What nervous systems directs the bodies flight or flight response?
a) peripheral
b) central
c) parasympathetic
d) sympathetic

What is used in quantitative investigations?
a) sensory information
b) numerical information
c) phenomenological research
d) ethnographic research

Which of the following taxonomic ranks is the most general? Order, genus, phylum, family
a) order
b) genus
c) phylum
d) family

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

What is an example of hydrocarbons containing double bonds?
a) C2H6
b) C4H8
c) C6H10
d) C8H12

What represents the correct order of scientific process?
a) hypothesis, data, analysis
b) hypothesis, analysis, data
c) data, hypothesis, analysis
d) data, analysis, hypothesis

What organ system supplies the body cells with oxygen and nutrients?
a) cardiovascular
b) digestive
c) nervous
d) immune

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

What organ system supplies the body with oxygen and removes carbon dioxide?
a) integumentary
b) endocrine
c) respiratory
d) renal

What is responsible for the peristalsis that occurs in the digestive tract?
a) smooth muscle
b) skeletal muscle
c) connective tissue
d) subcutaneous tissue

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

The spine is part of what system?
a) lymphatic
b) nervous
c) skeletal
d) endocrine

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

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

What organs are immune cells produced ?
a) tonsils
b) spleen
c) lymph nodes
d) 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

The heart is located ________ the sternum ?
a) to the right of
b) to the left of
c) behind
d) in front of

Exchange of oxygen occurs in what structure of the respiratory system?
a) alveoli
b) bronchioles
c) trachea
d) pleura

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

Enzyme activity is driven by what internal factor?
a) pH
b) temperature
c) substrate concentration
d) 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

In which of the following do mutations in human DNA originate?
a) protein
b) mitochondria
c) phenotype
d) genotype

Which of the following organelles found in heterotrophs is similar to the chloroplast?
a) vacuole
b) nucleus
c) lysosome
d) mitochondria

Which of the following organelles gives rough endoplasmic reticulum its signature rough characteristic?
a) ribosomes
b) mitochondria
c) centrosomes
d) vacuoles

DNA is to genes, as amino acids are to ______?
a) cells
b) ribosomes
c) rna
d) 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

Mutations in what cells can be passed on to future generations?
a) brain cells
b) germ cells
c) skin cells
d) nerve cells

DNA codons encode which of the following?
a) blood
b) neurons
c) amino acids
d) cell walls

During cell replication, which material is duplicated by polymerase enzymes?
a) water
b) protein
c) RNA
d) DNA

What nitrogenous base is unique to RNA?
a) uracil
b) guanine
c) thymine
d) adenine

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

Meiosis occurs in which of the following cells?
a) germ cells
b) skin cells
c) blood cells
d) brain 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

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

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

When examining electronegativity values, which atoms will form the least polar bond with hydrogen?
a) hydrogen
b) fluorine
c) chlorine
d) bromine

Which of the following elements is the best electrical conductor?
a) Bromine,
b) arsenic
c) carbon
d) 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

___ are at a higher taxonomic level of organization than ___

a) organs, organ system
b) cells, molecules
c) atoms, molecules
d) tissues, organs

Which of the following is needed for cellular waste recycling?
a) centrosome
b) lysosome
c) chromosome
d) golgi apparatus

Which of the following system includes organs between the mouth and anus?
a) respiratory
b) digestive
c) endocrine
d) skeletal

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

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

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

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%

The pancreas is a component of which system?
a) lymphatic
b) nervous
c) endocrine
d) muscular

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