The melting temperature of DNA is the temperature at which half of the DNA strands are in a random coil or single-stranded configuration. Determine whether the following statement is true or false, and state your reasoning.

Longer strands of DNA have a lower melting temperature than shorter ones.

Which of the following statements about base pairing is incorrect?

A student analyzed a double-stranded DNA molecule and found out that the DNA has 19% C. Determine the percentages of G, A, and T. Explain.

In a certain species of bacteria, it is found that 30% of the DNA base pairs are composed of guanine. What is the percentage of adenine, thymine, and cytosine in the DNA of this bacteria?

In a DNA molecule, adenine pairs with which base, and how many hydrogen bonds are formed between them?

Determine the complementary DNA strand for the following sequence: 5'AGTCGATC3'.

Which of the following incorrectly describes the similarities between the structural levels of nucleic acid and proteins?