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Question 1

Which RNA carries amino acids to the ribosome during translation?

a
rRNA
b
tRNA
c
mRNA
d
drRNA
Question 2
Which of the following is the BEST explanation of the role of DNA and RNA in making proteins?

Protein Folding on Make a GIF

a
DNA unwinds into two separate strands, and a complementary copy of each is produced during replication. During transcription, a DNA strand is used to produce a complementary strand of mRNA, with uracil taking the place of thymine. During translation, each set of three bases in the mRNA results in an amino acid being added to a chain, and a protein is formed.
b
DNA unwinds into two separate strands, and an exact copy of each is produced during replication. During translation, a DNA strand is used to produce a complementary strand of mRNA, with uracil taking the place of thymine. During transcription, each set of three codons in the mRNA results in an amino acid being added to a chain, and a protein is formed.
c
DNA unwinds into two separate strands, and a complementary copy of each is produced during replication. During transcription, a DNA strand is used to produce a complementary strand of mRNA, with uracil taking the place of adenine. During translation, each base in the mRNA results in an amino acid being added to a chain, and a protein is formed.
d
DNA unwinds into two separate strands, and an exact copy of each is produced during replication. During transcription, a DNA strand is copied to produce mRNA, which is an exact copy of the DNA strand except that uracil takes the place of thymine. During translation, each set of three bases in the mRNA results in a protein with a specialized function being formed.
Question 3
Which of the following statements is true with regard to recombinant DNA?

a
Recombinant DNA can only be found in fungal cells.
b
Recombinant DNA is always smaller than a typical chromosome.
c
Recombinant DNA is produced by pasting together DNA from two or more sources.
d
Recombinant DNA is used to produce hundreds of other DNA products.
Question 4
This question REPLACES the Unit 7 Lesson 9 discussion.

This is worth 4 points of your total weekly recap quiz.

Please do your best, you have unlimited chances for DNA mastery!

7 Magnificently Awesome Science Meme's! | Biology humor, Fun science, Science memes



DNA carries the cell’s genetic information; however, it cannot leave the .

Because of this, it copies part of its nucleotide sequence into a complementary copy of

during the process called .

During this process, the enzyme,

separates the DNA strands.

One strand of DNA acts as the

from which nucleotides are assembled into a strand of RNA.

Each three letter sequence on the mRNA is called a .

The start codon is and the three stop codons are .

Once the mRNA leaves the nucleus, it goes to the to prepare for protein

synthesis, which is called .

During this process, a molecule brings the to the ribosome.

The amino acids are hooked together by bonds.

The tRNA is able to match up to the mRNA by the in its anticodons.

When the codon is reached, the chain is released into the .



Word Bank:
templateAUGproteinABCtranscriptioncomplimentary basescarbohydratetransponderrRNAribosomelysosomeDEF QRS,XYZtranslationcodonnucleusmutationUAG UGA UAAamino acidpeptidestarttRNAcytoplasmstopenzymelipidshelicasemRNA
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Question 5
Fill in the blanks in the correct order.



a
inversion, duplication, translocation
b
duplication, inversion, translocation
c
duplication, translocation, inversion
d
translocation, duplication, inversion
Question 6
The diagram represents a change that occurred in a pair of chromosomes during the formation of an egg cell.

The alteration that occurred will most likely be passed on to every cell that develops from the egg cell. Why would this type of alteration result in offspring with combinations of traits that differ from those found in either parent?

a
It results in the formation of diploid gametes.
b
It changes the chromosome number of the body cells that develop from the egg cell.
c
It results in new combinations of genes on each chromosome.
d
It converts sex cells into body cells.
Question 7
Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?

a
Either the sperm cell or the egg cell has one copy of chromosome 21.
b
In a mistake in mitosis, the fertilized egg has two copies of chromosome 21.
c
In a mistake in meiosis, the fertilized egg has two copies of chromosome 21.
d
Either the sperm cell or the egg cell has two copies of chromosome 21.

1 answer

Here are the answers to your questions:

Question 1:
Which RNA carries amino acids to the ribosome during translation?
Answer: b) tRNA

Question 2:
Which of the following is the BEST explanation of the role of DNA and RNA in making proteins?
Answer: a) DNA unwinds into two separate strands, and a complementary copy of each is produced during replication. During transcription, a DNA strand is used to produce a complementary strand of mRNA, with uracil taking the place of thymine. During translation, each set of three bases in the mRNA results in an amino acid being added to a chain, and a protein is formed.

Question 3:
Which of the following statements is true with regard to recombinant DNA?
Answer: c) Recombinant DNA is produced by pasting together DNA from two or more sources.

Question 4:
Fill in the blanks:
DNA carries the cell’s genetic information; however, it cannot leave the nucleus. Because of this, it copies part of its nucleotide sequence into a complementary copy of mRNA during the process called transcription. During this process, the enzyme, helicase, separates the DNA strands. One strand of DNA acts as the template from which nucleotides are assembled into a strand of RNA. Each three-letter sequence on the mRNA is called a codon. The start codon is AUG and the three stop codons are UAG, UGA, UAA. Once the mRNA leaves the nucleus, it goes to the ribosome to prepare for protein synthesis, which is called translation. During this process, a tRNA molecule brings the amino acid to the ribosome. The amino acids are hooked together by peptide bonds. The tRNA is able to match up to the mRNA by the complimentary bases in its anticodons. When the stop codon is reached, the protein chain is released into the cytoplasm.

Answer Overview:

  1. nucleus
  2. mRNA
  3. transcription
  4. helicase
  5. template
  6. codon
  7. AUG
  8. UAG, UGA, UAA
  9. ribosome
  10. translation
  11. tRNA
  12. amino acid
  13. peptide
  14. complimentary bases
  15. stop
  16. protein
  17. cytoplasm

Question 5:
Fill in the blanks in the correct order.
Answer: a) inversion, duplication, translocation

Question 6:
The alteration that occurred will most likely be passed on to every cell that develops from the egg cell. Why would this type of alteration result in offspring with combinations of traits that differ from those found in either parent?
Answer: c) It results in new combinations of genes on each chromosome.

Question 7:
Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?
Answer: c) In a mistake in meiosis, the fertilized egg has two copies of chromosome 21.

I hope this helps! If you have any further questions or need additional explanations, feel free to ask!

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