Biology 6 - General Biology I » Fall 2021 » 2.7 Review Quiz on Chemistry of Life

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Question #1
A hydrogen atom (element) is different from a carbon atom (element) because they differ in the number of______________.
A.   neutron
B.   electron
C.   protons
Question #2
Which of the following molecules is a carbohydrate?
A.   glucose
B.   olive oil
C.   insulin
D.   cholesterol
Question #3
Organic molecules have a “backbone” consisting of which element?
A.   hydrogen (H)
B.   nitrogen (N)
C.   calcium (Ca)
D.   carbon (C)
E.   oxygen (O)
Question #4
Which major group of organic compounds has tremendous diversity in structure and function and hence, is the most abundant organic compound in cells?
A.   fats
B.   steroids
C.   proteins
D.   sugars
Question #5
Which is NOT true about water molecules?
A.   nonpolar
B.   strong cohesion
C.   inorganic
D.   stabilizes temperature
Question #6
Which type of organic compound is used by cells as genetic material?
A.   lipid
B.   water
C.   carbohydrate
D.   nucleic acid
E.   protein
Question #7
A/n ________ releases H+ when it is added to water.
A.   acid
B.   atom
C.   ion
D.   base (alkaline)
Question #8
To dissolve in water, a substance has to be _________________.
A.   inorganic
B.   small in size
C.   neutral in pH
D.   polar
Question #9
Which event occurs during a chemical reaction?
A.   covalent bonds are broken or formed
B.   substances evaporate
C.   solute dissolves into solvent
Question #10
Which molecule is organic?
A.   oxygen gas
B.   table salt
C.   water
D.   sugar
E.   hydrochloric acid

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