Question

which note is made up of a single note head? ○ whole note○ half note○ eighth note○ sixteenth notewhat is the value of a sixteenth note? ○ one beat○ half a beat○ a quarter of a beat○ two beats

Explanation:

For the first question: A whole note consists only of an empty note head, while half notes add a stem, eighth notes add a stem + one flag, and sixteenth notes add a stem + two flags.
For the second question: In 4/4 time (the most common time signature), a whole note is 4 beats, half note 2 beats, quarter note 1 beat, eighth note $\frac{1}{2}$ beat, and sixteenth note $\frac{1}{4}$ beat (a quarter of a beat).

Answer:

1. Whole note
2. A quarter of a beat