Question

question 1
how many covalent bonds are formed by carbon atoms, producing a wide variety of molecular shapes and sizes?
seven
eight
six
four
question 2
when we know what kinds of _____ are present in an organic compound, we can predict its chemical behavior.
macromolecules
proteins
electrons
functional groups
question 3
match the organic compound with its subunit.
carbohydrate choose
protein choose
nucleic acid choose

Explanation:

• Question 1: Carbon has 4 valence electrons and can form 4 covalent bonds to achieve a stable electron - configuration, allowing for diverse molecular structures.
• Question 2: Functional groups are specific groups of atoms within molecules that have characteristic chemical behaviors and reactions, determining the overall chemical properties of an organic compound.
• Question 3: Carbohydrates are made up of monosaccharides (such as glucose), proteins are composed of amino - acids, and nucleic acids are made of nucleotides.

Answer:

• Question 1: Four
• Question 2: Functional groups
• Question 3:
• Carbohydrate: Monosaccharide
• Protein: Amino - acid
• Nucleic Acid: Nucleotide