Biology 1306 Chapter 4 Nucleic Acids and the RNA World

Which of the following are purine nitrogenous bases?

Guanine and Adenine

What is/are the variable structure of a nucleotide?

The Sugar and the Base

If one strand of a DNA molecule has the sequence of bases 5'ATTGCA'3, the other complementary strand would have the sequence?

3'TAACGT'5

When nucleotides polymerize to form a nucleic acid

A Covalent Bond forms between the sugar of one nucleotide and the phosphate of a second.

Which of the following descriptions best fits the class of molecules known as nucleotides?

A nitrogenous base, A phosphate group, A sugar.

The difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA?

Contains one less oxygen atom.

Which of the following are pyrimidine nitrogenous bases?

Cytosine and Uracil

Which of the following includes all the pyrimidine's found in RNA and DNA?

Cytosine, Uracil, Thymine

Which of the following statements best summarizes the difference between DNA and RNA?

DNA nucleotides contain a different sugar than RNA nucleotides.

Which of the following best describes DNA's secondary structure?

Double Antiparallel helical strands.

DNA is capable of self-replication?

False

One of the primary functions of RNA molecules is to?

Function in the Synthesis of Proteins.

Nucleic acids are made up of which of the following monomers?

Nucleotides

What is the difference between a Ribonucleotides and Deoxyribonucleotides?

Ribonucleotides have a hydroxyl group of the 2 carbon of their sugar subunit.

RNA is much more diverse in size, shape, and reactivity than DNA?

True