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Q 1/17
Score 0
The figure below shows two homologous chromosomes undergoing a type of mutation called translocation. Each letter in the figure represents a single gene. This mutation is most likely to cause negative effects by —
30
reversing DNA nucleotides
destroying genetic information
adding new chromosomes
expressing genes differently
Q 2/17
Score 0
Which mutation would change the greatest number of amino acids in a protein?
30
the substitution of a thymine nucleotide with a cytosine nucleotide near the beginning of a gene
the addition of the nucleotides that make up an additional stop codon to the end of a gene
the deletion of a single adenine nucleotide in the middle of a gene
the insertion of a thymine, a guanine, and an adenine nucleotide in that order at the start of a gene
17 questions
Q.
The figure below shows two homologous chromosomes undergoing a type of mutation called translocation. Each letter in the figure represents a single gene. This mutation is most likely to cause negative effects by —
1
30 sec
Q.
Which mutation would change the greatest number of amino acids in a protein?
2
30 sec
Q.
Mutations within the DNA sequence of an organism can —
3
30 sec
Q.
A codon chart is shown below.Which of these changes to the DNA triplet 3’ GCT 5’ will affect the protein produced?
4
30 sec
Q.
A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the synthesis of the segment as shown. Which is the new peptide chain when the new DNA segment is translated?
5
30 sec
Q.
A model of a DNA molecule is shown below. The arrow indicates —
6
30 sec
Q.
How does DNA in cells determine an organism’s complex traits?
7
30 sec
Q.
The sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?
8
30 sec
Q.
A segment of DNA is represented in the illustration.
How is information for a specific protein carried on the DNA molecule?
9
30 sec
Q.
The process represented in the diagram produces a molecule that is complementary to thetemplate strand of DNA. What type of molecule is produced?
10
30 sec
Q.
Part of an important cellular process involving a DNA strand is modeled below.What is the purpose of this cellular process?
11
30 sec
Q.
A model of a biological process is shown. What is the purpose of this process?
12
30 sec
Q.
In the process of translation, the ribosome is the site where —
13
30 sec
Q.
Study the sentences describing the steps of protein synthesis. Which sequence places the steps in the correct order?
1. Transfer RNA picks up individual amino acids and carries them to the ribosome.
2. Ribosomal RNA bonds mRNA and tRNA.
3. A single strand of DNA serves as a template for making mRNA.
4. Messenger RNA carries the sequence of nucleotides to the ribosomes.
5. A protein is synthesized.
14
30 sec
Q.
Which type of ribonucleic acid carries the coding information to the site of protein synthesis?
15
30 sec
Q.
Mutated DNA sequences that can be passed from parent to offspring —
16
30 sec
Q.
During division, the code for the protein cytochrome-C had the code for proline changed to the code for leucine. This type of change in the genetic material is known as a –
