Life and Physical Sciences practice test: free ATI TEAS 7 questions

Sample Practice Questions for Life and Physical Sciences

1. Question 1Ref: ATI TEAS 7 — Science: Life and Physical Sciences — S.2.1 Describe cell structure, function, and organization

   What is the basic structural and functional unit of all living organisms?

   AOrganBTissueCAtomDCell
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   Correct Answer
   D. Cell

   The cell is the basic structural and functional unit of all living things, as described by cell theory. Atoms are the basic units of matter (A), tissues are groups of similar cells (B), and organs are made of multiple tissue types (D). Cell theory is a foundational concept in biology.

2. Question 2Ref: ATI TEAS 7 — Science: Life and Physical Sciences — S.3.3 Describe chemical reactions and energy changes

   In a chemical reaction, what does the law of conservation of mass state?

   AMatter can neither be created nor destroyed in a chemical reaction.BThe total mass always increases after a reaction.CMatter can be created but not destroyed.DMass is always lost during a reaction.
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   Correct Answer
   A. Matter can neither be created nor destroyed in a chemical reaction.

   The law of conservation of mass states that in a closed system, matter is neither created nor destroyed during a chemical reaction. The total mass of the reactants equals the total mass of the products. This is a fundamental principle of chemistry tested on the TEAS.