Isotopes of one element differ in their number of what?Answer: Neutrons. Source: Wikipedia, Isotope. Read 2026-10-01.
What charge does an electron carry?Answer: Negative. Source: Wikipedia, Atom. Read 2026-10-01.
What is a cation?Answer: A positively charged ion. Source: Wikipedia, Ion. Read 2026-10-01.
What is a molecule or atom with net electric charge called?Answer: An ion. Source: Wikipedia, Ion. Read 2026-10-01.
Which element has the most atoms in the human body?Answer: Hydrogen. Source: Wikipedia, Composition of the human body. Read 2026-10-01.
Which element makes up the most of the human body by mass?Answer: Oxygen. Source: Wikipedia, Composition of the human body. Read 2026-10-01.
Which four elements are called life's basic building blocks?Answer: Oxygen, carbon, hydrogen and nitrogen. Source: Wikipedia, Composition of the human body. Read 2026-10-01.
Which particle of an atom has no electric charge?Answer: Neutron. Source: Wikipedia, Atom. Read 2026-10-01.
Which particles make up the nucleus of an atom?Answer: Protons and neutrons. Source: Wikipedia, Atom. Read 2026-10-01.
Show all 36 questions (27 more)
Bonds and reactions 9
A + B → AB is which kind of reaction?Answer: Synthesis. Source: Wikipedia, Chemical reaction. Read 2026-10-01.
AB → A + B is which kind of reaction?Answer: Decomposition. Source: Wikipedia, Chemical reaction. Read 2026-10-01.
An ionic bond forms when electrons areAnswer: transferred from one atom to another. Source: Wikipedia, Ionic bonding. Read 2026-10-01.
In which bond do atoms share pairs of electrons?Answer: Covalent bond. Source: Wikipedia, Covalent bond. Read 2026-10-01.
Lead nitrate and potassium iodide react to form lead iodide and potassium nitrate. Which kind of reaction is this?Answer: Double displacement. Source: Wikipedia, Chemical reaction. Read 2026-10-01.
What are the substances present at the start of a chemical reaction called?Answer: Reactants. Source: Wikipedia, Chemical reaction. Read 2026-10-01.
Which attraction links one water molecule to the next?Answer: Hydrogen bond. Source: Wikipedia, Hydrogen bond. Read 2026-10-01.
Which bond is the attraction between oppositely charged ions?Answer: Ionic bond. Source: Wikipedia, Ionic bonding. Read 2026-10-01.
Which bonds hold the base pairs of DNA together?Answer: Hydrogen bonds. Source: Wikipedia, Hydrogen bond. Read 2026-10-01.
Water, acids and bases 9
A solution with a pH below 7 isAnswer: acidic. Source: Wikipedia, PH. Read 2026-10-01.
The pH of blood is normally aboutAnswer: 7.4. Source: Wikipedia, Acid–base homeostasis. Read 2026-10-01.
Sodium, potassium and chloride ions in body fluids are examples ofAnswer: electrolytes. Source: Wikipedia, Electrolyte. Read 2026-10-01.
Water's specific heat capacity is very high. What does that mean?Answer: It takes a lot of heat to change its temperature. Source: Wikipedia, Properties of water. Read 2026-10-01.
What does a buffer solution do?Answer: Resists changes in pH. Source: Wikipedia, Buffer solution. Read 2026-10-01.
What does the pH scale measure?Answer: Hydrogen ions in a solution. Source: Wikipedia, PH. Read 2026-10-01.
What is the pH of a neutral solution at 25 °C?Answer: 7. Source: Wikipedia, PH. Read 2026-10-01.
Which buffer system does most to keep the pH of blood steady?Answer: The bicarbonate buffer system. Source: Wikipedia, Buffer solution. Read 2026-10-01.
Why does water dissolve salts so well?Answer: Its molecules are polar. Source: Wikipedia, Properties of water. Read 2026-10-01.
Energy and enzymes 9
An enzyme is a biologicalAnswer: catalyst. Source: Wikipedia, Enzyme. Read 2026-10-01.
How does an enzyme speed up a reaction?Answer: By lowering its activation energy. Source: Wikipedia, Enzyme. Read 2026-10-01.
Most enzymes are which kind of molecule?Answer: Proteins. Source: Wikipedia, Enzyme. Read 2026-10-01.
What are the molecules that an enzyme acts on called?Answer: Substrates. Source: Wikipedia, Enzyme. Read 2026-10-01.
What does ATP stand for?Answer: Adenosine triphosphate. Source: Wikipedia, Adenosine triphosphate. Read 2026-10-01.
What happens to an enzyme by the end of the reaction it speeds up?Answer: It is not consumed. Source: Wikipedia, Enzyme. Read 2026-10-01.
When a cell uses ATP in a metabolic process, what does the ATP become?Answer: ADP or AMP. Source: Wikipedia, Adenosine triphosphate. Read 2026-10-01.
Where on an enzyme does the substrate bind?Answer: The active site. Source: Wikipedia, Enzyme. Read 2026-10-01.
Which molecule is called the molecular unit of currency for energy in cells?Answer: ATP. Source: Wikipedia, Adenosine triphosphate. Read 2026-10-01.
How this list was compiled: Questions, wrong choices and explanations were written for this site. Each fact was checked on the English Wikipedia article named in the question's source line (Composition of the human body, Atom, Ion, Isotope, Ionic bonding, Covalent bond, Hydrogen bond, Chemical reaction, Properties of water, pH, Buffer solution, Acid–base homeostasis, Electrolyte, Adenosine triphosphate, Enzyme), read 2026-10-01. Licence: own work
How it works
This anatomy and physiology chemistry quiz has 36 questions on the chemistry chapter of the course: atoms and the elements of the body, bonds and reactions, water with acids and bases, and energy with enzymes. Each answer comes with its reason.
Read the full guide
Four sets for an anatomy chemistry quiz
Atoms and elements covers protons, neutrons, electrons, ions and isotopes. Bonds and reactions covers ionic, covalent and hydrogen bonds, synthesis, decomposition and double displacement. Water, acids and bases covers pH, buffers and electrolytes. Energy and enzymes covers ATP, substrates and activation energy.
The chemical level of organization
Atoms join into molecules, and molecules build the cells that the rest of the course is about. For an anatomy and physiology chemical level of organization quiz, start with the first two sets. After a round, Print lists its questions: add more, tick With answer key, and print the test.
Cation has a t, like a plus sign: it is the positive ion.
Low pH means more hydrogen ions, not fewer.
Questions and answers
What chemistry is in an anatomy and physiology course?
The elements of the body, atoms, ions and isotopes, the three kinds of bond, the main kinds of reaction, water, acids, bases, pH and buffers, and the organic molecules. This quiz covers all but the organic molecules.
Where are the questions on carbohydrates, lipids, proteins and nucleic acids?
On the macromolecules quiz, which asks the four organic molecules and their building blocks. This page leaves them to it.
Which element is most common in the human body?
By mass, oxygen, at about 65 percent. By number of atoms, hydrogen. Both are mostly in water.
What is the difference between an ionic and a covalent bond?
In an ionic bond one atom gives electrons to another and the two ions attract. In a covalent bond the atoms share pairs of electrons.