Review: DNA & Protein Synthesis

What are the four nitrogenous bases found in DNA?

• adenine

• thymine

• uracil

• guanine

• cytosine

What are the three parts of a nucleotide?

• phosphate

• 5 carbon sugar

• nitrogen base

• adenine

• nucleus

A ____ is a change in the DNA sequence that can harm, help, or have no impact on an organism

• gene

• hydrogen bond

• mutation

• nitrogen

The DNA molecule is shaped like a:

• light bulb

• cone

• single helix

• double helix

DNA is called "semiconservative". Why might this be?

• uracil is "conserved" in that it is only used to make new strands

• ATP is "conserved" via the usage of facilitated diffusion

• the old strand is "conserved" and used to make the new strands

• ligase is "conserved" in that it is denatured by the process

What is the name of the enzyme that unwinds and unzips DNA for DNA replication?

• DNA helicase

• DNA ligase

• DNA polymerase

• RNA polymerase

Which organelle is the location of protein synthesis?

• nucleus

• cytoplasm

• ribosome

• nucleotide

During transcription, this type of ribonucleic acid is made to copy the DNA instruction and bring the instructions out of the nucleus

• tRNA

• mRNA

• rRNA

• dRNA

The main function of tRNA is to:

• carry a message that, when translated, forms proteins

• form a portion of ribosomes

• string together complementary RNA and DNA strands

• bring amino acids from the cytoplasm to the ribosomes

What is the term for a 3 nucleotide sequence that codes for an amino acid?

• base

• codon

• anticodon

• rRNA