Microgenetics Unit Quiz

What is the structure of all DNA molecules?

• Double Helix
• Single Strand
• Varied
• Circular

Which of the following nitrogen bases would not be found in DNA?

• Thymine
• Cytosine
• Uracil
• Adenine

After examining the DNA of different organisms, which of the following did Erwin Chargaff conclude about the four bases?

• A+T=C+G
• A=C=G=T
• A=C and G=T
• A=T and C=G

What holds base pairs together?

• Pairs of double-ringed nucleotides
• Weak hydrogen bonds
• Nitrogen-carbon bonds
• Sugar-phosphate backbones

What are the 3 parts of every DNA nucleotide?

• Deoxyribose Sugar, Phosphate, Oxygen Bases
• Deoxyribose Sugar, Phosphate, Nitrogen Bases
• Ribose Sugar, Phosphate, Oxygen Bases
• Ribose Sugar, Phosphate, Nitrogen Bases

The main difference between the four nucleotides that make up DNA is that they have different

• Bases
• Sugars
• Uracil
• Bonds

During DNA replication, a complementary strand of DNA is made for each original DNA strand. What is the complementary DNA strand of: CCTAGCT?

• TTGCATG
• AAGTATC
• CCUAGCTU
• GGATCGA

Where does the process of DNA replication occur?

• Ribosome
• Nucleus
• Cytoplasm
• Mitochondria

Where does the process of transcription start?

• Ribosome
• Nucleus
• Cytoplasm
• Rough Endoplasmic Reticulum

At which organelle does translation happen?

• Ribosome
• Nucleus
• Mitochondria
• Cell Wall