TEAS Science Practice Test #1

Which of the following chambers of the heart pumps oxygenated blood to the rest of the body?

An organism has eight pairs of chromosomes. How many chromosomes does each egg or sperm cell contain?

After air is inhaled through the mouth, nose, and throat, which of the following structures does it travel through?

The identity of an element is determined by its number of

Which of the following cells carry oxygen?

Oxygen is exchanged between blood and tissues at which of the following areas?

How many electrons are included in the double bond between the two oxygen atoms in O₂?

Which of the following is the anterior bone of the lower leg?

Which of the following regions of the brain is the active link between the endocrine and nervous systems?

How many electrons are needed to complete the valence shell of the halogens?

The codon for the amino acid methionine is AUG. Which anticodon would be found on the tRNA that carries methionine?

Which of the following joints is formed by the humerus and the ulna?

Which of the following is the process that produces a liquid from a gas?

In which region of the small intestine are most of the nutrients absorbed?

What state of matter has a definite shape and definite volume?

Which of the following macromolecules is broken down by trypsin?

Which of the following supplies blood to the lower body?

Which type of cell is responsible for the degradation of bone tissue?

The elements in Group 1 have ________ valence electrons and are ________ reactive than the elements in Group 2.

Which of the following is NOT an example of the end result of a negative feedback loop?

Consider a prokaryotic organism that typically lives in a 10 percent saline concentration environment. Which of the following environments would cause the organism to lose mass at the greatest rate due to osmosis?

Which of the following is NOT a function of the respiratory system in humans?

Which of the following elements is the most electronegative?

Which of the following choices would contain the code for making a protein?

The graph below shows the solubility of several salts at a range of temperatures.

Which of the salts on the graph has the greatest solubility at 50°C?

The mitral valve transports blood between which of the following two regions of the heart?

Which of the following statements best defines a scientific model?

A chemistry student is conducting an experiment in which she tests the relationship between reactant concentration and heat produced by a reaction. In her experiment, she alters the reactant concentration and measures heat produced. Which of the following is the independent variable in this experiment?

Which of the following is NOT a homogeneous mixture?

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?

How many neutrons are in an atom of the element  ?

The graph shows the temperature of water as heat is added.

Which of the following processes is occurring between points B and C?

Which of the following is a decomposition reaction?

Which ion has the greatest number of electrons?

Damage to the parathyroid would most likely affect which of the following?

Which of the following is the final vessel through which semen must pass before being expelled from the body?

Which of the following groups of bones are part of the axial skeleton?

Which of the following is NOT a type of white blood cell?

Which of the following is NOT a function of the pituitary gland?

What type of reaction is shown below? Zn + CuCl₂ → ZnCl₂ + Cu

Which of the following is NOT a hormone-producing gland of the endocrine system?

Which of the following is a carbohydrate?

Which of the following is the division of the nervous system primarily responsible for regulating all involuntary and subconscious muscle functions?

Which of the following is the dependent variable in the experiment described below?

A scientist discovers a new species of snail that lives in the ocean. He tested the ability of this species to handle heat by measuring its growth rate as he increased the temperature of the water. He also tested two different concentrations of salt to determine which type of marine environment the snail would be best suited for.

Which of the following polymers is created by joining amino acids?

Which type of bond holds the oxygen and hydrogen atoms in water molecules together?

In the following acid-base reaction, which species acts as an Arrhenius acid?

HCl(aq) + KOH(aq) → KCl(aq) + H₂O(l)

What substance does a Schwann cell secrete that increases the speed of signals traveling to and from neurons?

The air in the atmosphere is a solution composed of 78.09% nitrogen (N), 20.95% oxygen (O), 0.93% argon (Ar), and 0.04% carbon dioxide (CO₂) by volume. Which of these gases is the solvent?