D would be the answer tomthis
The Pathway
• air enters the nostrils
•passes through the nasopharynx
•the oral pharynx
•through the glottis
• into the trachea
• into the right and left bronchi, with branches and rebranches into
• bronchioles each of which terminates in a cluster
• alveoli
Explanation:
AB or A or B are the possibilities
Answer:
The scientific claim that is most consistent with the findings in the question given is that: histone methylation opens up chromatin at gene R, so transcription factors can bind to DNA more easily.
Explanation:
The transcription of the R gene decreases when histone methyltransferase is inhibited, this proves that histone methylation increases the transcription of the R gene.
When the gene is in the condensed state, RNA polymerase can no longer gain access to the region so as to transcribe the R gene. Thus, in order for the gene to be transcribed, the gene has to be in the open (euchromatin) state.
Histone methylation makes the gene in the euchromatin state.
Therefore, the scientific claim that is most consistent with the findings in the question given is that: histone methylation opens up chromatin at gene R, so transcription factors can bind to DNA more easily.
These organelles are Chloroplasts.
Explanation:
- Chloroplast is a plastid present in plant cells.
- These contain stacks of thylakoid forming Grana.
- Each thylakoid contain green pigment called chlorophyll that traps sunlight to carry out photosynthesis.
- Chloroplasts is a double membrane bound organelle having its own DNA.
- Chloroplasts are considered as one of the organelles that originated as a result of endosymbiosis of photosynthetic bacteria.
