Unit 4 Genetics

In humans, where does DNA replication take place?

• cytoplasm
• nucleus
• ribosome
• Vacoule

RNA from a bear is compared to RNA from a sunflower. Both will contain the

• sugar deoxyribose and the base thymine
• sugar ribose and the base thymine.
• sugar deoxyribose and the base uracil
• sugar ribose and the base uracil

Use the diagram to the right AND your knowledge of biology to answer this question. Structures 3 and 4 are held together by

• weak peptide bonds
• nitrogen bases
• strong hydrogen bonds
• weak hydrogen bonds

In nucleotides, the letters A, G, C, and T represent

• phosphate groups
• Nitrogen bases
• deoxyribose sugars
• ribose sugars

The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?

• DNA opens up and RNA copies it.
• DNA opens up and completely unwinds to make two new molecules.
• DNA opens up and each strand is used as a template for making a new strand.
• RNA opens up the DNA and uses each strand as a template for a new strand

#1 represents the

• Nitrogen Base
• Phosphate group
• Sugar

Which is the sugar used in DNA

• Glucose
• Ribose
• Deoxyribose
• Phosphate

Which is the sugar used in RNA

• Glucose
• Ribose
• Deoxyribose
• Phosphate

A double helix is the structure of _______

• DNA
• RNA
• Nitrogen Base

Which of these strands is the complementary strand of DNA: ATG ATG CCT ACG

• ATG ATG CCT ACG
• UAC UAC GGU UGC
• TAC TAC GGA TGC