Answer:
The cytosolic and mitochondrial pools of CoA are kept separate, and no radioactive CoA from the cytosolic pool enters the mitochondrion.
Explanation:
- Fatty acyl group condensed with CoA in the cytosol are first transferred to carnitine and in this process, CoA is released.
- After this, it is transported into the mitochondrion, where it is again condensed with CoA.
- In this way, the cytosolic and mitochondrial pools of CoA are kept separate, and due to this reason, no radioactive CoA from the cytosolic pool enters the mitochondrion.
- Therefore, according to the given question, the C14 CoA that is added into the liver homogenate along with palmitate shows cytosolic radioactive fraction but not mitochondrial as in the mitochondria a different CoA joins palmitate and not the one containing C14.
Answer: The correct answer is - 3) olfactory receptors neurons that detect smell. 4) photoreceptors neurons that detect light .
1) and 2) statements are correctly matched in the question..
Olfactory receptors are also called odorant receptors. The olfactory receptor neurons detect smell and thus give a sense of smell to the organism. They are present in the nasal cavity.
Photoreceptor neurons are those that detect light and they are present in the retina of eye.
Experimento Miller y Urey. Los científicos piensan que los rayos provocaron reacciones químicas en la atmósfera primitiva de la Tierra. La atmósfera primitiva contenía gases como amoníaco, metano, vapor de agua y dióxido de carbono. ... Miller y Urey demostraron que las moléculas orgánicas pueden formarse en condiciones simuladas de la Tierra primitiva. Desde compuestos inorgánicos hasta bloques de construcción.
En 1953, Stanley Miller y Harold Urey hicieron un experimento para probar las ideas de Oparin y Haldane. Descubrieron que las moléculas orgánicas se pueden producir espontáneamente en condiciones reductoras que se cree que se parecen a las de la Tierra primitiva.