In a dna double helix an adenine of one strand always pairs with a(n) of the complementary strand, and a guanine of one strand always pairs with a(n) of the complementary strand.
a. guanine adenine
b. cytosine thymine
c. cytosine uracil
d. thymine cytosine
e. uracil cytosine

Option D

Explanation:

In a DNA double helix an adenine of one strand always pairs with a thymine of the complementary strand, and a guanine of one strand always pairs with a cytosine of the complementary strand.

Hence, the base composition of DNA shows that: adenine to thymine ratio is one (A/T = 1), while guanine to cytosine ratio is also equal to one (G/C = 1)

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics