Protein Synthesis

1.

1 point

How many codons are needed to specify three amino acids

3

6

9

1

2.

1 point

The _____ of mRNA carries the info for the amino acid sequence of a protein

Base sequence

Proteins

tRNA

Ribosomes

3.

1 point

______ is the heritable information contained in the sequence of nucleotide bases in its DNA

phenotyype

genotype

4.

1 point

Keratin is a protein found in hair. Where in a cell is keratin made?

the cytoplasm

the ribosomes

the nucleus

the mitochonria

5.

1 point

Each tRNA carries a specific ______ to a ribosome during protein synthesis

codone

amino acid

protein

DNA

6.

1 point

DNA remains in the nucleus.

True

False

7.

1 point

DNA replication occurs in the

mitochondria

nucleus

ribosome

cytoplasm

8.

1 point

Hemoglobin is an important protein in red blood cells. The DNA code for hemoglobin contains the following segment:

TGC-GGA-CTC-CTC

Which of these is the messenger RNA code for this segment of DNA?

ACG-CCT-GAA-GAA

UGC-GGA-CUC-CUC

TCC-GGT-CTC-CTC

ACG-CCU-GAG-GAG

9.

1 point

The _____ subunit of rRna has two binding sites for tRNA molecules, and one catalytic site where peptide bonds join amino acids together into a protein.

small

stop

large

start

10.

1 point

The genetic code is shared by all organisms and is a set of rules relating nucleotide sequence to amino acid sequence

True

False

11.

1 point

The three stop codons are

AUG

AGU

UGA

UAG

UAA

AAU

12.

1 point

The process of removing intron and joining exons is called ______

RNA splicing

RNA transcription

Processing

messaging

13.

1 point

Amino acids are the basic sub-unit of what

nucleic acids

fats

carbohydrates

proteins

14.

1 point

How many nucleotides are needed to code for one amino acid?

four

One

three

two

15.

1 point

during protein synthesis, tRNA bind with a _____ from the mRNA

codone

amino acid

protein

DNA

16.

1 point

What kind of molecules carry the instructions for protein synthesis?

carbohydrates

DNA and RNA

enzymes

Amino acids

17.

1 point

the organism’s physical traits, arising from the actions of a wide variety of proteins ex: color of eyes

phenotyype

genotype

18.

1 point

Each codon of mRNA (hence each triplet in DNA) codes for one:

amino acid

nucleotide

protein

base

19.

1 point

During the process of Eukaryotic RNA, ______ ares spliced together to form mRNA

tails

exons

caps

introns

20.

1 point

in Eukaryotic RNA, , before the RNA leaves the nucleus _____ are removed

introns

exons

caps

tails

21.

1 point

Which of these results when one nitrogen base replaces another in a segment of genetic material?

a feedback loop

an enzyme

a mutation

an adaptation

22.

1 point

The first phase of transcription is called _____

initiation

RNA polymerase

a promoter

terminator

23.

1 point

The 3 nucleotides on tRNA that base pair with mRNA during translation is called

anticodon

base pairs

sequences

codon

24.

1 point

Transcription happens in the _____, while translation happen in the _______.

Cytoplasm; nucleus

Nucleus; cytoplasm

25.

1 point

What is the language of nucleic acids?

polypeptide,

nucleic acids

nucleotides

proteins

26.

1 point

_______ subunit of rRna has binding sites for mRNA, a “start” tRNA, and other proteins that cooperate to read mRNAto start protein synthesis

small

large

stop

start

27.

1 point

Introns are

Involves the removal of introns, fusing of the exons, and the addition of a 5' cap and a Poly A tail to RNA

C. Complex of molecules that cut out the introns and splice together the exons; consists of snRNPs and proteins

Coding sections of RNA

Noncoding sections of RNA

28.

1 point

RNA is then translated into a sequence of amino acids, aka ______.

polypeptides, which make up proteins

nucleotides

nucleic acids

29.

1 point

Which of these are the repeating units that form a DNA molecule?

nucleotides

phosphates

chromosomes

amino acids

30.

1 point

The process of transferring a gene’s instructions for making a protein is

protein synthesis

translation

replication

transcription

31.

1 point

______ is a triplet of bases, which codes for one amino acid.

genetic code

codon

anticodon

mRNA

32.

1 point

The 3 base pair sequence that codes for an amino acid on the nRNA strand is called the

none of these

codon

base pair

anticodon

33.

1 point

Put these in the correct order:
Genetic information in DNA is...(1)folded into proteins (2) translated into polypeptides (3) transcribed into RNA

1, 2, 3

2, 1, 3

3, 2, 1

3, 1, 2

34.

1 point

Choose three that apply yo RNA.

Uracil

ribose

contains genes

carries the code to the ribsomes

deoxyribose.

single strand

Thymine

35.

1 point

Both sides of the DNA helix is copied into mRNA

True

False

36.

1 point

What is the function of RNA polymerase?

Add RNA nucleotides to exposed bases on DNA

Produce the RNA primer required for DNA replication

Form peptide bonds between amino acids

Produce Amino Acids

37.

1 point

MRNA binds to the small ribosomal subunit during

Termination

Elongation

Initiation

38.

1 point

The process by which mRNA is made into an amino acid sequence is called what?

base pair

translation

the genetic code

transcription

39.

1 point

_____ is the set of rules that convert a nucleotide sequence in RNA to an amino acid sequence.

codon

mRNA

genetic code

anticodon

40.

1 point

Look at the DNA sequence below.

GAA TTC GCA

What do the G and A represent in the DNA sequence?

nitrogen bases

sugars

amino acids

phosphates

41.

1 point

During the first phase of transcription, _____ attaches to the promoter and starts _____.

RNA polymerase; RNA synthesis

DNA; RNA synthesis

RNA polymerase; formation of nucleotides

RNA synthesis; RNA polymerase

42.

1 point

DNA binds to ribosomes, which synthesize a protein specified by the mRNA base sequence

True

False

43.

1 point

The transfer of genetic information from DNA into an RNA molecule is called _____.

the genetic code

protein synthesis

transcription

translation

44.

1 point

The “start transcribing” signal is a nucleotide sequence called _________

initiation

a promoter

RNA polymerase

terminator

45.

1 point

_____ and proteins form ribosomes

ribosomal rna

codons

amino acids

nucleotides

46.

1 point

____ is the transfer of information from RNA into a protein.

protein synthesis

translation

transcription

the genetic code