30 Questions
Which of the following biomolecules is a monosaccharide?
Monosaccharide
What is the atomic number of carbon?
6
How many shared electrons can carbon accommodate in its outer shell when forming covalent bonds?
4
How many covalent bonds can oxygen form?
2
How many covalent bonds can sulfur form?
4
How many covalent bonds can nitrogen form?
4
How many covalent bonds can phosphorus form?
4
Which of the following elements has the highest atomic number?
Phosphorus
Which of the following elements can make the most covalent bonds?
Phosphorus
Which of the following elements has the least number of electrons in its outer shell?
Carbon
Hydrogen in a covalent bond with which atom(s) in the table creates a polar bond?
Oxygen
Which part of the water molecule will be more negative and why: the oxygen or the hydrogen?
Oxygen, because it attracts more electrons
What type of bond occurs between a (+)δ H on one molecule and a (-)δ O (or N or sometimes S) on a neighboring molecule?
Hydrogen bond
What type of non-covalent bond involves transient electrostatic interactions between permanent or induced dipoles?
Van der Waals force
What happens to hydrophobic molecules in water?
They aggregate and do not bond with water
What type of bond occurs between oppositely charged molecules?
Ionic bond
What is the functional group represented by R– C–H?
Methyl
What is the functional group represented by R – C – O – C – R’?
Anhydride
What is the functional group represented by R – C – N?
Amido
What is the functional group represented by R – O – R’?
Ether
Which functional group can be cleaved from molecules such as ATP to provide energy?
Phosphoryl group
What is the general formula for monosaccharides?
(CH2O)n
What is the generic name for a monosaccharide with a 6-atom ring structure?
Pyranose
What functional group is found at the end of a fatty acid?
Carboxyl group
What type of bond is formed between fatty acids and glycerol in the creation of mono-, di-, or tri-glycerides?
Ester linkage
What is the general structure of an amino acid?
R group + amino group + carboxyl group
What type of bond is formed between amino acids in the formation of proteins?
Peptide bond
What are the two types of nucleotides based on the structure of their nitrogenous base?
Purines and Pyrimidines
What is the general structure of a nucleotide?
Nitrogenous base + 5-C sugar + Phosphate group(s)
What type of bond is formed between nucleotides in the formation of nucleic acids?
Phosphodiester bond
Test your knowledge on biomolecules and their importance in the chemistry of life. Identify examples of biomolecules and understand why they are significant.
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