EOC Biology

The nitrogenous bases of DNA nucleotides form the middle "rungs" of the DNA ladder. What type of bond holds these bases together?

• Strong covalent bonds

• Peptide bonds

• Weak hydrogen bonds

• Strong phosphorous bonds

Every set of 3 bases or letters in DNA and RNA are called a:

• Codon

• Triplet

• Chart

• Amino acid

A segment of DNA is called a:

• Allele

• Gene

• Codon

• Trait

What aspect of DNA determines the proteins that are produced?

• The arrangement of nitrogenous bases

• The double helix shape

• The alternating sugar-phosphate backbone

• The complementary nature

Tags

NGSS.HS-LS1-1

What process is shown in this image?

• Transcription

• Translation

• DNA Replication

• Independent Assortment

Where in the cell does DNA replication occur?

• RIbosomes

• Cell membrane

• Nucleus

• Nucleolus

Why do cells replicate their DNA?

• To express genes

• To code for proteins

• To make more DNA for new cells

• To repair damaged DNA

When do cells replicate their DNA?

• During the S phase of Interphase before cell division

• During cytokinesis following cell division

• During cell division or mitosis

• During the G1 phase of Interphase before cell division

During DNA replication, the DNA is first unzipped by an enzyme called:

• Lactose

• Helicase

• DNA Polymerase

• Catalase

During DNA replication, an enzyme called ________ is responsible for attaching new nitrogenous bases to each unzipped strand of the DNA.

• Helicase

• Lactose

• Catalase

• DNA Polymerase