Unit 7. vocab

What is DNA (Deoxyribonucleic Acid)?

• DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life.

• DNA is a type of protein found in the body.

• DNA is a form of energy used by cells.

• DNA is a type of carbohydrate that provides energy.

What is the twisted ladder structure of DNA called?

• Double helix.

• Single helix

• Triple helix

• Quadruple helix

What is the building block of DNA and RNA, consisting of a sugar, phosphate group, and nitrogenous base?

• nucleotide

• amino acid

• lipid

• carbohydrate

What are the molecules in DNA (adenine, thymine, guanine, cytosine) and RNA (adenine, uracil, guanine, cytosine) called?

• The molecules in DNA and RNA are called nucleotides.

• The molecules in DNA and RNA are called proteins.

• The molecules in DNA and RNA are called lipids.

• The molecules in DNA and RNA are called carbohydrates.

What is the structural framework of DNA, composed of alternating sugars and phosphates?

• The structural framework of DNA is composed of alternating sugars and phosphates.

• The structural framework of DNA is composed of alternating proteins and lipids.

• The structural framework of DNA is composed of alternating nucleotides and enzymes.

• The structural framework of DNA is composed of alternating amino acids and carbohydrates.

What is the weak bond between complementary base pairs in DNA called?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Van der Waals force

What is the nitrogenous base that pairs with another base called?

• The nitrogenous base that pairs with another base is called a complementary base.

• The nitrogenous base that pairs with another base is called a primary base.

• The nitrogenous base that pairs with another base is called a secondary base.

• The nitrogenous base that pairs with another base is called a tertiary base.

What is the process of copying DNA before cell division called?

• DNA replication

• Transcription

• Translation

• Mutation

What is the enzyme that unwinds the DNA double helix during replication?

• The enzyme that unwinds the DNA double helix during replication is called helicase.

• The enzyme that unwinds the DNA double helix during replication is called polymerase.

• The enzyme that unwinds the DNA double helix during replication is called ligase.

• The enzyme that unwinds the DNA double helix during replication is called primase.

What is the enzyme that adds complementary nucleotides during replication?

• DNA polymerase

• RNA polymerase

• Helicase

• Ligase