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8th grade Topic 4 Lesson 3

Quiz by Alesha Jackson

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8 questions
Show answers
  • Q1

    What is the first step in protein synthesis?

    mRNA moves to the cytoplasm.

    DNA is unzipped in the nucleus.

    A ribosome attaches to the mRNA.

    tRNA brings amino acids to the mRNA.

    20s
  • Q2

    What happens when DNA is replicated?

    A chromosome with two identical DNA strands is formed.

    A gene with two identical DNA strands is formed.

    Genes are copied directly from one cell to another.

    A chromosome with two identical RNA strands is formed.

    20s
  • Q3

    What is true of all genes?

    They use the same kinds of mRNA during protein synthesis.

    They use different kinds of tRNA during protein synthesis.

    They use different kinds of mRNA during protein synthesis.

    They use the same kinds of tRNA during protein synthesis.

    20s
  • Q4

    Contains ribose sugar.

    DNA

    RNA

    20s
  • Q5

    DNA and RNA use the same kind of nitrogen bases.

    False

    True

    20s
  • Q6

    What do cells build using DNA code?

    Sugars

    Genes

    Proteins

    Chromosomes

    20s
  • Q7

    What is the first step of DNA replication?

    DNA unzips using a protein.

    DNA untwists

    DNA copies itself.

    Nitrogen bases pair up with each of the bases.

    20s
  • Q8

    Which one of these is NOT a way an error can occur during DNA replication?

    Adding protein bases

    Changing the order of nitrogen bases.

    Leaving out nitrogen bases

    Adding nitrogen bases

    20s

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