Protein Synthesis & Mutation 2

Why is DNA important?

• it is very small and very complicated

• it is found in every living thing

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

For proteins to be made, DNA must first be copied into________.

• chromosome

• cytoplasm

• ribosome

• RNA

In a molecule of double-stranded DNA, the amount of ADENINE present will always be equal to the amount of what nitrogenous base?

• uracil

• thymine

• cytosine

• guanine

What is the main function of tRNA?

• to bring amino acids from the cytoplasm to the ribosomes

• to carry a message that, when translated, forms proteins

• to form a portion of ribosomes

• to string together complementary RNA and DNA strands

In DNA replication, if the original sequence reads AAT TTG CGC CCA ATA.

What would the complementary DNA strand be?

• AAT TTG CGC CCA ATA

• AAUUUCGCGGGUUAU

• TTA AAC GCG GGT TAT

• UUA AAC GCG GGU UAU

What amino acid is represented by the codon AAU?

• Stop

• Leucine

• Tyrosine

• Asparagine

Where does the process of DNA transcription in eukaryotic cells take place?

• cytoplasm

• ribosome

• endoplasmic reticulum

• nucleus

In RNA, uracil pairs with what nitrogenous base?

• thymine

• cytosine

• adenine

• guanine

What process is going on in this photo?

• duplication

• transcription

• replication

• translation

Which of the following units are repeatedly joined together to form a strand of DNA or RNA?

• amino acids

• nucelotides

• lipids

• polysaccharides