O2 is the electron acceptor at the end of the electron transport chain.
Answer:
c.Endocrina
Explanation:
El sistema endocrino consta de órganos que producen sustancias químicas especiales llamadas hormonas.
Las hormonas son mensajeros químicos secretados directamente en el torrente sanguíneo que regulan diversas actividades en el cuerpo.
Por lo tanto, el sistema endocrino secreta sustancias químicas en el torrente sanguíneo.
Answer:
The correct answer is c. a variety of nutrient molecules are readiy available as dissolved solutes.
Explanation:
There are several molecules that act as nutrients, that can dissolve in water. Mostly inorganic compounds like salts can dissolve in water, resulting in ions that can go through the membrane easier. The temperature of living things actually is more stable because of the water in them.
Answer:
Option C
Explanation:
DNA fragments have negative charge and they move towards the positively charged electrode in gel electrophoresis.
There is no difference in the charge carried by the DNA fragments as they all have the equal amount of charge on them.
The difference in speed of large and small molecules of DNA is due to their sizes.
Large DNA molecules do not pass easily through the pores of the gel while the smaller molecules do not face any such hindrance and are easily passed through the gel . Therefore small DNA molecules move faster.
F plasmid has the largest size and hence it will move slowly.
Option C is correct
