emilyphillips1681
18.04.2020 •
Biology
Which of these structures is/are NOT properly matched with one of its/their functions?
a.pharyngeal tonsil: trap and destroy pathogens entering the nasopharynx in air
b.paranasal sinuses: house olfactory receptors
c.nasopharynx: conduct air toward and from the larynx
d.nasal conchae: increase the mucosal surface area exposed to air
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Ответ:
Option B, paranasal sinuses: house olfactory receptors
Explanation:
Paranasal sinuses are located between the facial and skull bone. These are cavities in the maxilla, frontal, sphenoid, and ethmoid bones which ultimately drain into the nasal cavity.
Their functions include the following –
a)Heating the inhaled air
b)Humidifying the inhaled air
c)Make skull lighter
d)Produce sound by resonating the voice
e)Lubricate the nasal cavity
Hence, option B is correct
Ответ:
Answer;
1. DNA unzips in the nucleus
2. Transcription
3. RNA moves to the ribosome
4.Translation occurs
5. Protein assembled at ribosome
occurs.
Explanation;
-The central dogma describes the two-step process, transcription and translation, by which genetic information in genes flows into proteins:that is; DNA → RNA → protein. Transcription is the synthesis of an RNA copy of a segment of DNA, a process that is catalyzed by the enzyme RNA polymerase. Translation on the other hand involves making of the proteins from the mRNA (has codons that codes for specific amino acids) in the ribosomes.