Answer:
Binding of acetylcholine to the receptor protein converts the protein to an open ion channel
Explanation:
- Ionotropic receptors are those receptors that have binding sites for their messenger ligands and also have the capacity to alter shape enough to become an open ion channel,and thus allowing an increase in cross-membrane traffic of ions, thus altering the membrane potential.
- Therefore, <em><u>Acetylcholine receptors on skeletal muscles are described as being ionotropic receptors because the binding of acetylcholine to the receptor protein converts the protein to an open ion channel</u></em>
Answer:
Tectonic plates are able to move because the Earth's lithosphere has greater mechanical strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection; that is, the slow creeping motion of Earth's solid mantle.
Sunlight I think is the answer but Google should help with that don't take my word for it
Answer:
C. Compaction
Explanation:
Chyme enters from the small intestine into the large intestine. In the large intestine, chyme becomes solid or semisolid as the water is absorbed from it. Absorption of excess water from chyme to convert it into the feces in the large intestine is called compaction. Feces consist of water, inorganic salts, unabsorbed digested materials, and indigestible parts of food. During compaction, enough water is absorbed and this makes large intestine one of the important organs in maintaining the body’s water balance.
The third one is the right answer.
Mutations appear randomly and these mutations can either have possitive, negative or neutral impact on the individual's survival. The environment of the individual amongst other factor determine the net effect of the mutation. For example:
A mutation on a shade plant for bigger leaves would have a possitive impact on the plants survival due to the increase of the photosynthetic tissue area. On the other hand the same mutation on a desert plant would have a negative impact on the plant's survival due to the increase of the leaf area which leads to increased water evaporation off the plant.
