Biology 6 - General Biology I » Spring 2021 » 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.   protons
B.   electron
C.   neutron
Question #2
Which of the following molecules is a carbohydrate?
A.   olive oil
B.   cholesterol
C.   glucose
D.   insulin
Question #3
Organic molecules have a “backbone” consisting of which element?
A.   oxygen (O)
B.   nitrogen (N)
C.   hydrogen (H)
D.   calcium (Ca)
E.   carbon (C)
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.   proteins
B.   fats
C.   sugars
D.   steroids
Question #5
Which is NOT true about water molecules?
A.   inorganic
B.   nonpolar
C.   stabilizes temperature
D.   strong cohesion
Question #6
Which type of organic compound is used by cells as genetic material?
A.   water
B.   lipid
C.   carbohydrate
D.   nucleic acid
E.   protein
Question #7
A/n ________ releases H+ when it is added to water.
A.   ion
B.   atom
C.   acid
D.   base (alkaline)
Question #8
To dissolve in water, a substance has to be _________________.
A.   small in size
B.   neutral in pH
C.   polar
D.   inorganic
Question #9
Which event occurs during a chemical reaction?
A.   solute dissolves into solvent
B.   substances evaporate
C.   covalent bonds are broken or formed
Question #10
Which molecule is organic?
A.   table salt
B.   sugar
C.   hydrochloric acid
D.   water
E.   oxygen gas

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