Unit 2 Review

What is the molecule in the picture called?

• DNA

• nucleotide

• phosphate-group

• nucleic acid

This 3 nucleotide sequence of mRNA is the message being delivered from DNA in the nucleus

• codon

• amino-acid

• nucelotide

• anticodon

The cell's primary growth phase is called

• Synthesis

• Gap 1 (G1)

• Growing

• Gap 2 (G2)

During which phase is the cell's DNA copied?

• Mitosis

• Anaphase

• translation

• Synthesis

A cell spends 90% of it's life in the first 3 phases of the cell cycle.

• True

• False

Which of the following pairing is INCORRECT?

• Adenine - Thymine

• Guanine - Cytosine

• Thymine - Guanine

• Uracil - Adenine

What two things make up the backbone of DNA?

• phosphate group

• nucleotide

• nitrogenous base

• sugar

What is the region of DNA that codes for a specific protein?

• centromere

• RNA

• Gene

• chromosome

Coiled up strands of DNA are called?

• chromosomes

• DNA

• centromeres

• double-helix

What stage of Mitosis is the picture showing?

• metaphase

• prophase

• telophase

• anaphase