Question 1 A) What would be the result of replacing a cytosine base with a thymine base in a segment of DNA during DNA replication? (1 mark)
The whole segment of DNA would be affected.
There would be no effect on DNA.
Cytosine base would pair with adenine when DNA is replicated.
The sequence could code for the wrong amino acid during translation.
issue 2
A) Which of the following statements best explains why a cell spends most of its cell cycle in interphase? (1 mark)
Cell growth and DNA replication prepare the cell for division.
Interphase is the last stage before exiting the cell cycle.
Mitosis occurs during this phase when the cell divides.
Protein Synthesis carefully reads each codon to ensure accuracy.
issue 3
A) Which statement is the first step in protein synthesis? (1 mark)
DNA unpacks between base pairs.
A ribosome attaches to mRNA.
Amino acids are linked together by peptide bonds.
tRNA transports amino acids to the ribosome and attaches them to the mRNA strand.
issue 4
A) Which statement is true? (1 mark)
Amino acids do not need to be assembled in any particular order.
The human body uses 20 amino acids to form all types of proteins.
Amino acids form a polypeptide chain via carbon-carbon bonds.
tRNA is attached to specific proteins in the cytoplasm of the cell.
issue 5
A) Which statement about cystic fibrosis is true? (1 mark)
Cystic fibrosis affects a person’s ability to make normal red blood cells.
Carriers have an advantage over people who don’t have the cystic fibrosis mutation.
Cystic fibrosis is caused by a frameshift deletion of a codon in the DNA molecule.
Cystic fibrosis is caused by a mutation in which a dominant allele replaces a recessive allele.
issue 6
A) What advantage does the use of the CRISPR technique have in the creation of GMOs? (1 mark)
Diversity within species can continue to increase through interbreeding.
CRISPR can result in sterile hybrids.
Specific traits can be chosen to produce viable organisms faster.
It eliminates any risk of mutation.
issue 7
A) What is the phenotype of a mouse that has the Bb genotype where B is the black fur gene and b is the brown fur gene assuming that this gene follows a Mendelian inheritance pattern? (1 mark)
black haired fur
yellow fur
fur with black and brown hairs
brown fur
issue 8
A) A heterozygous tall pea plant is crossed with another heterozygous tall pea plant. What is the probability that an offspring is a short plant? (1 mark)
75%
50%
25%
0%
Question 9
A) Which of the following mutations would be most likely to have a harmful effect on an organism? (1 mark)
an insertion of a cytosine base near the start of an exon
a substitution of a thymine for an adenine
a 3-base deletion near the center of a gene
a deletion of a guanine base near the center of an intron
issue 10
A) Which statement best describes why Punnett squares are useful? (1 mark)
Punnett squares are used to predict how recessive alleles are inherited.
Punnett squares are used to predict how dominant alleles are inherited.
Punnett squares are used to predict all possible allele combinations and their frequencies in offspring.
Punnett squares are used to predict the most likely allele combinations of parents in a cross. Manufactured in 2021, not using letters as this may vary.
The sequence could code for the wrong amino acid during translation.
DNA unpacks between base pairs.
The human body uses 20 amino acids to form all types of proteins.
Cystic fibrosis is caused by the deletion of a codon in the DNA molecule.
Specific traits can be chosen to produce viable organisms faster.
black haired fur
25%
there is not enough information to know if a mutation would be harmful
Punnett squares are used to predict all possible allele combinations and their frequencies in offspring.
yellow
Viral DNA or RNA copied by a host cell
A provirus is viral DNA incorporated into the DNA of the host cell.
It has a viral genome that mutates very quickly.
It copies the reproductive information from RNA into DNA.
15-19 alone Where the class of 2024 at 🎉 dr.eggman is 100% right thanks I have the same questions for 1-10 but I only have 13 questions 0-0 are these the correct answers? thanks Dr.Eggman is right Does anyone have any ideas on what to write for 15-19? 😭 Thought Dr Eggman was a bad guy :raised_eyebrow: Thanks @Dr.Eggman, you just saved my rating Thanks Dr.Eggman. Class of 2024 right here baby!!!!!!!!!!!! Thank you all Thank you Dr.eggman 😩 Made in 2021, not using letters as this may vary.
The sequence could code for the wrong amino acid during translation.
DNA unpacks between base pairs.
The human body uses 20 amino acids to form all types of proteins.
Cystic fibrosis is caused by the deletion of a codon in the DNA molecule.
Specific traits can be chosen to produce viable organisms faster.
black haired fur
25%
there is not enough information to know if a mutation would be harmful
Punnett squares are used to predict all possible allele combinations and their frequencies in offspring.
yellow
Viral DNA or RNA copied by a host cell
A provirus is viral DNA incorporated into the DNA of the host cell.
It has a viral genome that mutates very quickly.
It copies the reproductive information from RNA into DNA. what are the answers Yeah Fr.eggman correct Thank you Dr. Eggman you are a gentleman and a scholar. they changed it several questions don’t answer by dr.eggman answers are good I LOVE YOU dr.eggman I need the answer for bio test 13 questions dregan tank yu Study shows that people who do outdoor exercise are more likely to develop DNA mutations in their skin that lead to skin cancer. Which statement about outdoor exercise and skin cancer is correct? (1 mark)
Exercising outdoors causes skin cancer.
Exercising outdoors causes skin cancer.
Exercising outdoors is correlated with an increased incidence of skin cancer.
Exercising outdoors is correlated with an increased incidence of skin cancer.
Skin cancer is correlated with an increased incidence of DNA mutations.
Skin cancer is correlated with an increased incidence of DNA mutations.
Outdoor exercise and skin cancer are not correlated.
Outdoor exercise and skin cancer are not correlated. @D obviously not Did you end up finding the answers