c785 study guide PA GRADED A
Complementary DNA and/or RNA molecules pair with each other by hydrogen bonding during replication, transcription, or
... [Show More] translation. Which of the following pairs of molecules are complementary? (Select all that apply) - ANSWER ==tRNA and mRNA
mRNA and template DNA
During DNA replication the parent strands ______ and DNA polymerase______. - ANSWER ==separate, creates the new DNA strands
The following sequence is one strand of the DNA that makes up the SNCA gene that codes for alpha-synuclein, a protein found in the brain. 5' ATGCGGTGACGG 3' Which of the following is the complementary second DNA strand? - ANSWER ==5' CCGTCACCGCAT 3'
Assume you start with one copy of target DNA. How many copies of DNA will be made after 4 rounds of PCR (assume 100% reaction efficiency)? - ANSWER ==16
What are the necessary ingredients for a PCR reaction? - ANSWER ==dNTPs; thermostable DNA polymerase; DNA primers; double-stranded DNA
A frameshift mutation changed this sequence 5' AAC GCT TAG 3' to which of the following? - ANSWER ==3' GAT TCG CA 5'
Which choice represents a silent mutation for this sequence: 5' GGU UGC ACU 3'? - ANSWER ==5' GGU UGC ACA 3'
Beta thalassemia is a disease that causes low levels of hemoglobin. To inherit this autosomal disease, an individual must receive two mutant alleles. Which of the following likely represents the chromosome pairs of a healthy parent who has a child with beta thalassemia? (The yellow band represents the mutant allele and the green band represents the normal allele.) * - ANSWER ==Option 3- The chromosomes of a healthy parent who has a child with beta thalassemia must be a carrier of the disease, i.e. the parent must have one copy of the (dominant) normal allele and one copy of the (recessive) mutant allele.
Your black dog and your friend's white dog have puppies. If inheritance of coat color is co-dominant, the coat color of the puppies will be ________________, the color will be _______________ if incompletely dominant, and it will be _______________ if it is complete dominant - ANSWER ==Black-and-white spotted, gray, black
Freidreich's ataxia is an autosomal recessive disorder that results from multiple GAA insertions into the FXN gene. Which of the following best illustrates the inheritance pattern of Freidreich's ataxia in a family with the disease? - ANSWER ==None of these pedigrees are consistent with an autosomal recessive pattern.
The pedigree chart for Option 3 shows evidence of carriers, and both males and females have Friedrich's ataxia in this chart. These properties of the chart indicate that it is for an autosomal recessive disease.
Increased IGF2 expression is associated with many types of cancer. Studies have shown that when mothers take folic acid before conception, children have increased methylation of this gene. Which of the following is the best explanation for how this increased methylation could be beneficial? - ANSWER ==The increased methylation decreases the space between nucleosomes, decreasing the expression of the IGF2 gene.
Which of the following sequences represents a coding strand of DNA that leads to the production of the following polypeptide chain: Tyr Cys Val - ANSWER ==5' TAC TGT GTA 3'
Which of the following accurately compares DNA mismatch repair and nucleotide excision repair? - ANSWER ==Both processes involve recognition of the section requiring repair, removal of this section, replacement of the bases with DNA polymerase, and ligation.
Which of the following best describes the role of nonhomologous end joining? - ANSWER ==When there are double stranded breaks, this process joins the ends of the DNA together to fix the break.
The _____ and _____ are common to all amino acids but the ______ is unique to each amino acid. - ANSWER ==Carboxyl group, amino group, R group
Which of the following amino acids would form an ionic bond with lysine? - ANSWER ==Option 4-To form an ionic bond, a positively charged amino acid, like lysine, must form a bond with a negatively charged amino acid.
17. What portion of the amino acid is located inside the red box? - ANSWER ==Carboxyl group
Which of the following pairs of amino acids would form a hydrophobic interaction? - [Show Less]