Question

question 8
mutations are changes in dna sequences.
true
false
question 9
the function of messenger rna (mrna) is to -
cary the information from the dna out of the nucleus.
bond the ribosomes to the amino acids.
all of the above.
bring amino acids to ribosomes.

Explanation:

For Question 8: A mutation is defined as a change in the DNA sequence. This can occur due to various factors like errors in DNA replication, exposure to mutagens etc.
For Question 9: mRNA is transcribed from DNA in the nucleus. Its main function is to carry the genetic information (the code for making proteins) from the DNA in the nucleus to the ribosomes in the cytoplasm. tRNA (transfer RNA) is responsible for bringing amino - acids to the ribosomes and there is no direct role of mRNA in bonding ribosomes to amino - acids.

Answer:

Question 8: True
Question 9: carry the information from the DNA out of the nucleus.