Deck 7: Dna and Protein Synthesis

Question 1

The on ly RN A th at is no t m ad e fr om DN A is

A) messenger RNA
B) ribosomal RNA
C) transfer RNA
D) small nuclear RNA
E) None of the above

Answer 1

E

Question 2

The se t of alle les of a pa rtic ula r pe rs on is c alle d th e p er so n's

A) Genotype
B) Som atotype
C) Phenotype
D) Proteome
E) Genome

Answer 2

A

Question 3

DNA polymerase

A) Adds nucleotides only to the 3' end of deoxyribose
B) Uses the base on the existing strand as a guide to which nucleotide to add
C) Uses nucleotide triphosphates as substrates
D) Adds nucleotides to the complementary strands of both halves of unwound DNA
E) All of the above are true

Answer 3

E

Question 4

The se qu en tial o rd er of b ind ing of t R N A to the ribo so m e is

A) A site, P site, E site
B) A site , E site, P site
C) E site , P site, A site
D) E site , A site, P site
E) P site , A site, E site

Question 5

Adenine on one strand of D NA form s

A) Three hydrogen bonds with guanosine on tRNA
B) Covalent bonds with rRNA
C) Two hydrogen bonds with thymine on tRNA
D) Two hydrogen bonds with cytosine on tRNA
E) Two hydrogen bonds with uracil on tRNA

Question 6

Which of the following are NOT differences between RNA and DNA?

A) DNA has deoxyribose, RNA has ribose
B) DNA uses thymine, RNA uses uracil to pair with guanine
C) DNA is double-stranded, RNA is single-stranded
D) DNA is replicated from DNA, but RNA is not replicated from RNA
E) All of the above are true d ifferences between RNA and DNA

Question 7

An ex on is a reg ion of D N A th at is

A) At the end of the response element
B) In be twee n res pon se e lem ents
C) Expressed
D) Exc ised in the making of mRNA
E) Promotes expression of the DNA

Question 8

The 3' to 5' dire ction o n on e D NA stran d be ing op pos ite to the 5' to 3' direction in the opposing strand is called

A) Antiparallel
B) D ou ble he lix
C) Reverse strands
D) Helicase
E) Ok azak i fragm ents

Question 9

The ou twar d ap pea ranc e or b eha vior of an o rgan ism is called its

A) Genotype
B) Som atotype
C) Phenotype
D) Proteome
E) Genome

Question 10

The genetic code is located

A) On the mRNA
B) On the tRNA
C) On the DNA
D) On the amino acyl transferases
E) Non e of the ab ove ; it is a system prope rty

Question 11

The "c od on " re fe rs to a trip let s eq ue nc e o f nu cle otid es in

A) DNA
B) mRNA
C) tRNA
D) complementary DNA
E) rRNA

Question 12

The fun ction o f t-RN A is to

A) Covalently link to an amino acid and also recognize and bind the codon on mRNA
B) Structurally stabilize ribosomes
C) Bind mRNA to the ribosome
D) Elongate the amino acid chain by creating the peptide bond
E) Transfer proteins into the ER

Question 13

RN A P olym eras e III

A) Ma ke s m RN A fro m a D NA tem plate
B) Ma ke s m RN A fro m an R NA tem plate
C) M akes p re t-RNA from a DN A temp late
D) Makes ribosomal RNA in the nucleolus
E) Makes snRNA

Question 14

Nucleotides consist of

A) Deoxyribose, phosphate and a base such as adenine
B) Glycerol, fatty acid and a polar head group such as choline
C) Glycerol, phosphate and a base such as adenine
D) Glyce rol, fatty ac id and a po lar he ad g roup suc h as pho sph ate
E) Deoxyribose, choline and a base such as adenine

Question 15

Gua nine on one s trand of DN A form s

A) Three hydrogen bonds with thymine on the opposite DNA strand
B) Three hydrogen bonds with thymine on tRNA
C) Three hydrogen bonds with cytosine on the opposite DNA strand
D) Two hydrogen bonds with thymine on the opposite DNA strand
E) Two hydrogen bonds with cytosine on the opposite DNA strand

Question 16

"Transcription" refers to the

A) Synthesis of proteins in the cytosol
B) Syn the sis of p ro tein s in the m itoc ho nd ria
C) Synthesis of proteins on the ER mem brane
D) Synthesis of mRNA from DNA in the nucleus
E) The formation of aminoacyl tRNA

Question 17

The un win din g o f D N A is ac co m plis he d b y

A) DNA polymerase
B) D N A u nw ind ing en zym e
C) Helicase
D) DNA ligase
E) DNA primase

Question 18

mR NA is made by

A) RNA polymerase I acting on DNA
B) RNA polymerase II acting on DNA
D) RNA polymerase III acting on DNA
E) RNA polymerase I acting on RNA
E) RNA polymerase III acting on RNA

Question 19

The "backbone" of a single DNA nucleotide chain consists of

A) Deoxyribose units bonded together with phosphate groups hanging off one side and bases hanging off the other side
B) Altern ate p ho sp ha te an d d eo xyrib os e pa rts b on de d co va lent ly
C) Phosphate chains to which deoxyribose units with bases are attached
D) Nucleotides attached by hydrogen bonds
E) Nucleotides attached to each other by covalent bonds

Question 20

Which of the following is NOT a building block of a nucleotide?

A) A base such as adenine, guanine, thymine or cytosine
B) Ph osp hate
C) Deoxyribose
D) 2-deoxy Glucose
E) All of the above are components of nucleotides

Question 21

Which reaction is NOT part of the "histone code"

A) Histone acetylation
B) Histone methylation
C) Histone phosphorylation
D) His ton e pr ote olys is
E) Histone ubiquitinylation

Question 22

Histones are

A) Proteins that bind DNA and make it inaccessible to transcription
B) Proteins that prevent DNA from being translated
C) Enzymes that mark cells for histology
D) Enzymes that ub iquinylate DNA
E) Enzymes that methylate DNA

Question 23

Regions of DNA that bind receptors for steroid hormones, for example, are called

A) Exons
B) Introns
C) Splices
D) Resp onse eleme nts
E) Promoters

Question 24

A region of the DNA that is expressed is called

A) An intron
B) A response element
C) A promoter
D) An exon
E) A spliceosome

Question 25

Transcription requires

A) Unraveling of DNA from the histones
B) Activation of DNA polymerase
C) Activation of RNA polymerase I
D) Duplication of DNA
E) Nucleosome formation