9693668
Descripción
Test por Christine Davis - IU8, actualizado hace más de 1 año
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Creado por Christine Davis - IU8
hace más de 7 años
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Pregunta 1
Pregunta
A mutation caused by an addition or deletion of nitrogen base is a
Respuesta
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point mutation
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frame shift mutation
Pregunta 2
Pregunta
How many chromosomes does a normal human cell have?
Respuesta
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23
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46
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48
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52
Pregunta 3
Pregunta
Changing the sequence of nucleotides within a gene is known as
Respuesta
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transmission mistakes
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gene mutations
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chromosomal mutations
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transcription mistakes
Pregunta 4
Pregunta
Cancer is known as the uncontrollable dividing of cells; which statement appears to not support all the others in relation to the cause of cancer?
Respuesta
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one or more genes controlling the enzymes that control the cell cycle are changed.
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A protein can no longer make the proper enzyme to halt the division of a cell.
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The segment of DNA that contains the gene to code for the proper enzyme has been changed.
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Genes are not responsible for the ultimate causes of cancer.
Pregunta 5
Pregunta
Which of the following changes would be expected if a CAUUUG sequences of bases mutated to CACUUG?
Respuesta
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the amino acid sequence would be shorter than expected
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the identity of one amino acid would change
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the identity of more than one amino acid would change
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the amino acid sequence would remain unchanged
Pregunta 6
Pregunta
Refer to the image for this question.
Respuesta
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mRNA #1 and mRNA #2
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mRNA#1 and mRNA#3
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mRNA #3 and mRNA #2
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They are all the same
Pregunta 7
Pregunta
If the proteins above (from the mRNA sequences question) had an amino acid replaced with an amino acid with similar properties such as non-polar amino acid, the protein would most likely function the same.
Respuesta
- True
- False
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