Genetics SI

Most organisms have DNA as their genetic material. However, is there an exception?

• Some viruses, like retroviruses, use RNA as their genetic material.
• Fungi have RNA as their genetic material.
• All organisms have DNA, including viruses.
• Bacteria use RNA as their genetic material.

A molecule that contains repeating units :

• Monomer

• Compound
• Polymer

• Element

What are the 3 factors of a nucleotide?

• Enzymes, coenzymes, substrates

• Amino acids, fatty acids, glycerol

• Carbohydrates, proteins, lipids
• Pentose Sugar, nitrogenous base, phosphate group

What is the difference between DNA and RNA bonds?

• There is no difference they are both OH bond

• DNA is H bond and RNA is an OH bond

• DNA is OH bond and RNA is an H bond

• There is no difference they are both H bond

What are the two classes of nitrogen bases? 

• Uracil and ribose
• Cytosine and guanine
• Purines and pyrimidines
• Adenine and thymine

What are the bases of Purine? 

• Adenine and Guanine
• Cytosine and Thymine
• Uracil and Thymine
• Adenine and Cytosine

What are the bases of Pyrimidines?

• Cytosine, Thymine, Uracil
• Cytosine, Thymine, Glycine
• Thymine, Uracil, Alanine
• Adenine, Guanine, Cytosine

What does Adenine (A) bind to in DNA?

• Thymine (T)
• Guanine (G)
• Uracil (U)

• Cytosine (C)

What does Adenine (A) bind to in RNA?

• Thymine (T)
• Uracil (U)
• Cytosine (C)
• Guanine (G)

What is the direction of DNA? 

• 3' to 3'

• 5' to 5'

• 3' to 5'

• 5' to 3'