Lab Bio Ch. 7 Quizs

Which type of point mutation involves a change in the entire reading frame of the mRNA, resulting in (potentially) all the wrong amino acids being coded for?

• translocation

• substitution

• frameshift mutation

• inversion

An example of gene regulation, __________ control differentiation in cells- starting in the embryo- to ensure that all an organism's “parts” end up in the correct spot

• exons

• TATA box

• introns

• Hox genes

During DNA replication, what enzyme is responsible for building two new complementary strands to match the two original ones?

• RNA polymerase

• DNA polymerase

• helicase

• synthase

True or False: DNA is generally a stronger, more stabile molecule that RNA.

• True

• False

When a gene is turned “on” and the protein is being coded for we say that it is:

• translocated

• mutated

• expressed

• complementary

Which type of RNA "reads" the message from DNA, in order to interpret which amino acids are needed?

• mRNA

• tRNA

• rRNA

During DNA replication, what enzyme is responsible for "unzipping" the double helix?

• RNA polymerase

• DNA polymerase

• helicase

• synthase

Which of the following is NOT a part of a tRNA molecule?

• anticodon

• amino acid

• codon

Nucleotides in an mRNA strand that actually code for proteins and will be “expressed” are kept during the proofreading process of protein synthesis. These sections of nucleotides are called:

• codons

• introns

• exons

• anticodons

Using complementary base pairing, create a complementary strand DNA strand to the following:

ATCCGTAAG

• TAGGCATTC

• UAGGCAUUC

• TUGGCUAAC

• TACCGATTC