AP Biology ch. 8 Test

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.HS-LS1-1

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which of the following is not a nitrogen base found in DNA?

• Thymine
• Uracil 
• Guanine
• Adenine

A gene is (mark all that apply)

• A distinct portion of the somatic cells responsible for increasing hormone concentrations during interphase

• A distinct sequence of nucleotides forming part of the chromosome

• A unit of heredity transferred from the parents to their offspring

• A type of protein

What was Rosalind Franklin's contribution to the discovery of DNA?

• She built the first 3D model of DNA

• She took the first X-Ray image of DNA

• She discovered the nitrogen containing bases

• She discovered the covalent bond in DNA

What bases are considered Purines?

• A & G

• A & T

• C & G

• C & A

What does DNA Polymerase do?

• It helps breakdown the new strand in DNA replication and it proofreads the strands.

• It helps build the new strand in DNA replication and it proofreads the strands.

• It helps unwind the double helix.

• It forms bonds