Question 1
Which of the following regarding the basic mechanism of gene expression is correct?
a
RNA ―> DNA ―> mRNA ―> protein
b
RNA ―> DNA ―> tRNA ―> protein
c
DNA ―> protein ―> RNA
d
DNA ―> RNA ―> protein
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 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.
b
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.
c
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.
d
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.
Question 3
This question REPLACES the Unit 6 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:
cytoplasmenzymeAUGtemplatecarbohydratehelicaselipidspeptiderRNAmRNAamino acidcomplimentary basesribosometransponderABCDEF QRS,XYZtranscriptionstopUAG UGA UAAtranslationnucleusmutationstartcodonlysosomeproteintRNA
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Question 4
Farmers across many centuries have used selective breeding (artificial selection) to enhance certain qualities in their crops. Which of the following qualities would most likely be selected for in breeding?
a
bioluminescence for attraction to fireflies
b
decreased harvest production
c
decreased nutrient composition
d
resistance to harmful pests
Question 5
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?
a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.
Question 6
Which statement is true about mutations?
Some Animals Can Adapt or Mutate for Survival
a
Mutations are always beneficial.
b
Mutations only affect humans.
c
Mutations can be caused by radiation.
d
Mutations are always harmful in plants.
Question 7
Select all that can contribute to a change in the characteristics of a species over time?
Choose more than 1.
a
a mutation in a brain cell
b
a mutation in an egg cell
c
a mutation in a skin cell
d
a mutation in a sperm cell
e
a mutation in a nerve cell
f
a mutation in a somatic cell
a
b
c
d
f
Question 1
Which of the following regarding the basic mechanism of gene expression is correct?
a
RNA ―> DNA ―> mRNA ―> protein
b
RNA ―> DNA ―> tRNA ―> protein
c
DNA ―> protein ―> RNA
d
DNA ―> RNA ―> protein
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 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.
b
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.
c
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.
d
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.
Question 3
This question REPLACES the Unit 6 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:
cytoplasmenzymeAUGtemplatecarbohydratehelicaselipidspeptiderRNAmRNAamino acidcomplimentary basesribosometransponderABCDEF QRS,XYZtranscriptionstopUAG UGA UAAtranslationnucleusmutationstartcodonlysosomeproteintRNA
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Question 4
Farmers across many centuries have used selective breeding (artificial selection) to enhance certain qualities in their crops. Which of the following qualities would most likely be selected for in breeding?
a
bioluminescence for attraction to fireflies
b
decreased harvest production
c
decreased nutrient composition
d
resistance to harmful pests
Question 5
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?
a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.
Question 6
Which statement is true about mutations?
Some Animals Can Adapt or Mutate for Survival
a
Mutations are always beneficial.
b
Mutations only affect humans.
c
Mutations can be caused by radiation.
d
Mutations are always harmful in plants.
Question 7
Select all that can contribute to a change in the characteristics of a species over time?
Choose more than 1.
a
a mutation in a brain cell
b
a mutation in an egg cell
c
a mutation in a skin cell
d
a mutation in a sperm cell
e
a mutation in a nerve cell
f
a mutation in a somatic cell
answer all the questions
Question 1: d) DNA -> RNA -> protein
Question 2: b) 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:
Blank 1: nucleus
Blank 2: RNA
Blank 3: transcription
Blank 4: enzyme
Blank 5: template
Blank 6: codon
Blank 7: AUG
Blank 8: UGA, UAA, UAG
Blank 9: ribosome
Blank 10: translation
Blank 11: tRNA
Blank 12: peptide
Blank 13: anticodons
Blank 14: stop
Blank 15: cytoplasm
Question 4: d) resistance to harmful pests
Question 5: b) There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
Question 6: c) Mutations can be caused by radiation.
Question 7: b) a mutation in an egg cell
e) a mutation in a nerve cell
f) a mutation in a somatic cell
Question 1
Which of the following regarding the basic mechanism of gene expression is correct?
a
RNA ―> DNA ―> mRNA ―> protein
b
RNA ―> DNA ―> tRNA ―> protein
c
DNA ―> protein ―> RNA
d
DNA ―> RNA ―> protein
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 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.
b
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.
c
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.
d
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.
Question 3
This question REPLACES the Unit 6 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:
cytoplasmenzymeAUGtemplatecarbohydratehelicaselipidspeptiderRNAmRNAamino acidcomplimentary basesribosometransponderABCDEF QRS,XYZtranscriptionstopUAG UGA UAAtranslationnucleusmutationstartcodonlysosomeproteintRNA
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Question 4
Farmers across many centuries have used selective breeding (artificial selection) to enhance certain qualities in their crops. Which of the following qualities would most likely be selected for in breeding?
a
bioluminescence for attraction to fireflies
b
decreased harvest production
c
decreased nutrient composition
d
resistance to harmful pests
Question 5
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?
a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.
Question 6
Which statement is true about mutations?
Some Animals Can Adapt or Mutate for Survival
a
Mutations are always beneficial.
b
Mutations only affect humans.
c
Mutations can be caused by radiation.
d
Mutations are always harmful in plants.
Question 7
Select all that can contribute to a change in the characteristics of a species over time?
Choose more than 1.
a
a mutation in a brain cell
b
a mutation in an egg cell
c
a mutation in a skin cell
d
a mutation in a sperm cell
e
a mutation in a nerve cell
f
a mutation in a somatic cell
answer 1 - 7
Question 1: d) DNA → RNA → protein
Question 2: b) 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:
Blank 1: nucleus
Blank 2: mRNA
Blank 3: transcription
Blank 4: RNA polymerase
Blank 5: template
Blank 6: codon
Blank 7: AUG
Blank 8: UAA, UAG, UGA
Blank 9: cytoplasm
Blank 10: translation
Blank 11: tRNA
Blank 12: peptide
Blank 13: anticodons
Blank 14: stop
Blank 15: ribosome
Blank 16: peptide
Blank 17: cytoplasm
Question 4: d) resistance to harmful pests
Question 5: b) There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
Question 6: c) Mutations can be caused by radiation.
Question 7
Question 1: The correct answer is d. DNA -> RNA -> protein. This is the basic mechanism of gene expression, where DNA is transcribed into RNA, which is then translated into protein.
Question 2: The best explanation is b. 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:
Blank 1: nucleus
Blank 2: RNA
Blank 3: transcription
Blank 4: helicase
Blank 5: template
Blank 6: mRNA
Blank 7: codon
Blank 8: AUG
Blank 9: UAG, UGA, UAA
Blank 10: ribosome
Blank 11: translation
Blank 12: tRNA
Blank 13: amino acid
Blank 14: peptide
Blank 15: anticodons
Blank 16: stop
Blank 17: cytoplasm
Question 4: The most likely quality to be selected for in breeding would be d. resistance to harmful pests. Farmers would want to breed crops that are resilient and can withstand pests, as it would increase their overall yield and productivity.
Question 5: The most likely explanation is b. There was a mutation in the DNA, either in one of the gametes or the fertilized egg. Cystic fibrosis is an inherited recessive disorder, so it can be passed down through generations even if no one in the family is known to carry the gene or have the disorder. Mutations can occur spontaneously and can introduce new genetic variations.
Question 6: The true statement is c. Mutations can be caused by radiation. Mutations are changes in the DNA sequence, and they can be caused by various factors including radiation exposure, chemicals, or errors during DNA replication. Not all mutations are beneficial; some can be harmful or have no effect on an organism.
Question 7: The options that can contribute to a change in the characteristics of a species over time are:
- a mutation in an egg cell
- a mutation in a sperm cell
- a mutation in a somatic cell
Mutations in germline cells (egg and sperm cells) can be passed on to offspring and can lead to genetic variation in a species. Mutations in somatic cells can also contribute to changes in an individual, but they are not passed on to offspring.