My guess would be mRNA or RNA but I'm not too sure about this question, sorry.
C because who whould mesure a trend
This can be done through the Transcription and Translation process.
Long story short: DNA -> messenger RNA (mRNA) -> amino acids -> polypeptide chain -> protein
Step 1: Transcription
1) DNA loop is open
2) RNA polymerase (enzyme in nucleus) catalyze reaction of “unzipping” DNA
3) free RNA nucleotides in nucleus will be added to that strand of DNA
4) messenger RNA moves across nuclear membrane to cytoplasm (our nucleus)
Step 2: Translation
1) messenger RNA attaches to ribosome
2) mRNA determines which amino acid to place on protein
3) uses codons (triplet) on mRNA. Codon on mRNA and anticodon on tRNA have to match, which places true amino acid in ribosome, then it detached and finds another amino acid in cytoplasm.
4) “AUG” starts translation, and keeps going until reaching “stop codon”.
5) completed polypeptide chain results to protein being synthesized
Your teacher should explain this process more in depth hopefully
Answer: 1
Explanation: Oxygen moves in and carbon dioxide moves out of body.
