AP Biology Unit 6 2021

Inserting human DNA into a bacterial plasmid to create insulin-producing bacteria is an example of:

• Recombinant DNA

• DNA fingerprinting

• Cloning

• Selective breeding

Answer explanation

Inserting human DNA into a bacterial plasmid to produce insulin is a classic example of recombinant DNA technology, where DNA from different sources is combined to create new genetic combinations.

How do the three types of RNA work together?

• mRNA carries message, tRNA carries amino acids, and rRNA makes ribosome

• mRNA carries amino acids, tRNA transfer message, and rRNA makes ribosome

• mRNA makes ribosomes, tRNA carries amino acids, and rRNA relays information

• mRNA is made, tRNA holds the DNA in place, and rRNA removes the deoxyribose

The anticodon of a particular tRNA molecule is...

• complementary to the corresponding mRNA codon

• complementary to the rRNA triplet

• part of tRNA that bonds to a specific amino acid

• changeable, depends on the amino acid that bonds to the tRNA

Using the picture what polypeptide does CAA-CGG-GUA code for?

• His, Arg, Stop

• Gln, Arg, Val

• Gln, His, Met

• Met, Gln, Arg

An amino acid deficiency in an organism is most likely to affect

• post translation

• translation

• post transcription

• transcription

A ribosome has three binding sites for tRNA. Match the site with the correct function.

• P site holds tRNA that carries next amino acid added to chain

• A site is where discharged tRNAs leave the ribosome

• A site holds tRNA that carries next amino acid added to chain

• E site holds tRNA that carries the growing amino acid chain

The incidence of cancer increases dramatically in older humans because

• as we age, normal cell division inhibitors cease to function

• the longer we live, the more mutations we accumulate.

A technique that allows engineers to artificially amplify a section of DNA by copying it over and over again in a lab is known as

• Polymerase chain reaction

• personal genome sequencing

• recombinant DNA

• gene therapy

What does the operon model attempt to explain?

• the coordinated control of gene expression in bacteria

• the mechanism of viral attachment to a host cell

What type of Mutation is this to the sentence "THE CAT WAS FUN":

THE BAT WAS FUN

• Substitution Mutation

• Deletion Mutation

• Insertion Mutation