Closely read the following sentence: “playing in the park can be a fun and energizing way to spend the afternoon.” which word in the above sentence is acting as a gerund? [l.8.1.a] a. playing b. can c. energizing d. spend

The correct answer should be Playing because it acts as a noun and as a subject. If it was not a gerund then it would not act as a noun, and would be a participle.

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.