ATI TEAS Practice Test Science

ATI TEAS Practice Test Science Related

Review ATI TEAS Practice Test Science related questions and content

Which of the following represents the strongest scientific argument?

  • A. Scientific Hypothesis
  • B. Scientific Law
  • C. Scientific Study Conclusion
  • D. Scientific Theory
Correct Answer: D

Rationale: The correct answer is D, 'Scientific Theory.' A scientific theory is a well-substantiated explanation of an aspect of the natural world. It is based on a large body of evidence and has withstood rigorous testing and scrutiny. Scientific theories are considered the strongest scientific arguments because they have predictive power and are supported by a significant amount of empirical data. Choice A, 'Scientific Hypothesis,' is a proposed explanation for a phenomenon but lacks the extensive evidence and testing that theories undergo. Choice B, 'Scientific Law,' describes a consistent and predictable relationship between variables but does not explain why the relationship exists. Choice C, 'Scientific Study Conclusion,' may be based on a single study and lacks the comprehensive nature and validation that theories possess.

You may also like to solve these questions

Which structure in the heart is responsible for pumping oxygenated blood to the body?

  • A. Right ventricle
  • B. Left ventricle
  • C. Left atrium
  • D. Right atrium
Correct Answer: B

Rationale: The left ventricle is the chamber responsible for pumping oxygenated blood from the heart to the body. It receives oxygen-rich blood from the left atrium and contracts to push this blood out to the rest of the body through the aorta. The right ventricle pumps deoxygenated blood to the lungs for oxygenation, making choices A, C, and D incorrect for this function. Therefore, the correct answer is B, the Left ventricle.

What type of bond is present in salt?

  • A. Ionic
  • B. Nonpolar covalent
  • C. Polar covalent
  • D. Peptide
Correct Answer: A

Rationale: The correct answer is 'Ionic.' Ionic bonds are formed in salts through the transfer of electrons between atoms, leading to the attraction between positively and negatively charged ions. This results in a stable ionic compound, such as common table salt (sodium chloride). Nonpolar covalent, polar covalent, and peptide bonds are not typically found in salts. Nonpolar covalent bonds involve the equal sharing of electrons, polar covalent bonds involve unequal sharing of electrons, and peptide bonds are specific to proteins, not salts.

What is the role of the diaphragm in the respiratory system?

  • A. To regulate blood pressure
  • B. To contract and expand the lungs
  • C. To produce red blood cells
  • D. To absorb oxygen
Correct Answer: B

Rationale: The correct answer is B: To contract and expand the lungs. The diaphragm plays a crucial role in the respiratory system by contracting and expanding the lungs. When it contracts, it flattens, increasing the volume of the thoracic cavity and causing air to be drawn into the lungs. Conversely, when it relaxes, it moves back up, decreasing the thoracic cavity volume and pushing air out of the lungs. This process is essential for breathing and the exchange of oxygen and carbon dioxide in the body. Choices A, C, and D are incorrect. The diaphragm is not involved in regulating blood pressure, producing red blood cells, or absorbing oxygen. Its primary function is to aid in respiration by facilitating breathing through its contraction and relaxation movements.

Which of the following describes the term allele?

  • A. A specific form of a gene that can exist at a particular locus
  • B. An inheritable variation of a gene
  • C. A grouping of various genes
  • D. Variations of complementary base pairs
Correct Answer: B

Rationale: The correct answer is B. Alleles are different forms of a gene that can exist at a specific locus. They represent variations of a gene and are inheritable. Choice A is incorrect as it does not fully capture the concept of an allele, which is a specific form of a gene rather than a substitution. Choice C is incorrect as alleles are not a grouping of various genes but rather different forms of a single gene at a specific locus. Choice D is also incorrect as it does not accurately describe alleles; alleles are variations of genes, not base pairs.

Which of the following conditions is characterized by a high percentage of CO2 and a very low percentage of O2 in the blood?

  • A. Asphyxia
  • B. Emphysema
  • C. Eupnea
  • D. Hypoxia
Correct Answer: A

Rationale: Asphyxia is the correct answer as it refers to a condition with high CO2 and low O2 levels in the blood. Asphyxia can result in oxygen deprivation and excess carbon dioxide in the bloodstream, posing a life-threatening situation if not treated promptly. Emphysema is a chronic lung disease characterized by the damage to the air sacs in the lungs, leading to breathing difficulties. Eupnea denotes normal breathing without any abnormalities. Hypoxia, on the other hand, involves low oxygen levels reaching the body's tissues, which can result from various causes such as reduced oxygen in the air or respiratory issues.

Copyright © 2025 Nokea. All rights reserved.