Question

circle the correct choice within the parentheses for

1. (dna/rna) can leave the nucleus.
2. mrna is made during (transcription/translation).
3. mrna is made in the (cytoplasm/nucleus).
4. dna is located in the (nucleus/cytoplasm)
5. (translation/transcription) converts dna into mrna.
6. (mrna/rrna) is used to carry the genetic code from dna to the ribosomes.
7. (trna/rrna) makes up the ribosome. look in the book for this.
8. (dna/rna) uses uracil instead of thymine.
9. (rna/amino) acids make up a protein.
10. transcription takes place in the (nucleus/cytoplasm).
11. trna is used in (translation/transcription).
12. trna uses (anticodons/codons) to match to the mrna.
13. proteins are made at the (nucleus/ribosome).
14. (trna/mrna) attaches the amino acids into a chain.
15. trna is found in the (nucleus/cytoplasm)

Explanation:

1. RNA can leave the nucleus while DNA cannot due to its large size and association with proteins.
2. mRNA is synthesized during transcription, which is the process of copying DNA - sequence into RNA.
3. mRNA is transcribed from DNA in the nucleus.
4. DNA is mainly located in the nucleus of eukaryotic cells.
5. Transcription is the process that converts DNA into mRNA.
6. mRNA carries the genetic code from DNA to the ribosomes for protein - synthesis.
7. rRNA makes up a major part of the ribosome structure.
8. RNA uses uracil instead of thymine as one of its nitrogenous bases.
9. Amino acids are the building blocks of proteins, not RNA.
10. Transcription occurs in the nucleus where DNA is located.
11. tRNA is involved in translation, which is the process of making proteins from mRNA.
12. tRNA has anticodons that pair with the codons on mRNA.
13. Proteins are synthesized at the ribosome.
14. tRNA brings amino acids and links them together to form a chain during translation.
15. tRNA is found in the cytoplasm where it participates in translation.

Answer:

1. RNA
2. transcription
3. nucleus
4. nucleus
5. Transcription
6. mRNA
7. rRNA
8. RNA
9. amino
10. nucleus
11. translation
12. anticodons
13. ribosome
14. tRNA
15. cytoplasm