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- 1. Multiple Choice
What is the name of the process in which tRNA is involved in making proteins?
Transcription
Translation
Mitosis
Replication
- 2. Multiple Choice
Which pathway is correct?
DNA to Proteins to RNA
RNA to DNA to Proteins
Proteins to RNA to DNA
DNA to RNA to Proteins
- 3. Multiple Choice
Which statement about the diagram is correct?
Molecule 1 is DNA because it is a double helix.
Molecule 1 is RNA because it contains thymine.
Molecule 2 is DNA because it can pair with another molecule.
Molecule 2 is RNA because it is the only molecule that contains four types of bases.
- 4. Multiple Choice
Molecule 1 has the following sequences of bases:
T C A A G T.
Which set of bases in Molecule 2 will bond to this sequence in a complementary way?
U C A A G U
A G T A C A
A G U U C A
U C A A T A
- 5. Multiple Choice
Which statement explains the overall function of the two molecules in the diagram?
They provide an organism with usable energy in the form of ATP.
They provide information about how an organism is put together and maintained.
They store excess carbohydrates for later use.
They make up an organism's physical structure.
- 6. Multiple Choice
Which statement describes a step in DNA replication?
New bases are built by the original strands.
The paired bases release many types of proteins.
The DNA is cut into pieces using polymerase enzymes.
The double helix unwinds, and each side is a template for a new strand.
- 7. Multiple Choice
According to the base-pairing rules for DNA, which statement is not true?
A always pairs with T
T always pairs with G
C always pairs with G
- 8. Multiple Choice
The diagram shows the process of transcription, which takes place in the nucleus of a cell.
What is occurring?
RNA is being used as a template to make a molecule of tRNA
DNA is being used as a template to make a molecule of mRNA
DNA is being used as a template to make a chromosome
- 9. Multiple Choice
What happens to mRNA after it completes transcription?
It remains in the nucleus.
It becomes part of the nucleolus.
It enters the cytoplasm and moves toward ribosomes.
It leaves the cytoplasm through the cell membrane.
- 10. Multiple Choice
Which two types of RNA pair up using a codon-anticodon link?
mRNA and tRNA
mRNA and rRNA
tRNA and rRNA
tRNA and itself
- 11. Multiple Choice
This diagram shows the process of translation.
Which statement is correct?
The amino acid chain is brought in at the beginning of the process.
The molecule of tRNA is taking away amino acids one at a time.
The mRNA code determines which tRNA molecules are used.
The molecule of tRNA bonds with mRNA before it bonds to an amino acid.
- 12. Multiple Choice
Which structure is missing from the diagram but helps mRNA and tRNA bind together?
DNA
Mitochondrion
Ribosome
Nucleus
- 13. Multiple Choice
Where does protein-building begin?
Cytoskeleton
Enzyme
Cell membrane
DNA
- 14. Multiple Choice
A piece of mRNA has the code A U G C C A U U G A C G.
Which amino acids are coded in this strand?
isoleucine, cysteine, asparagine, lysine
methionine, serine, glutamine, tryptophan
methionine, proline, leucine, threonine
isoleucine, glutamic acid, isoleucine, tyrosine
- 15. Multiple Choice
A gene for microtubule proteins is being made in a cell.
How can mRNA represent an exact copy of that gene?
It is put together using base-pairing rules.
DNA polymerase makes a copy of the gene that is inserted into the mRNA.
RNA polymerase cuts out a section of the DNA.
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