Conduction of electrical impulses by action potentials of neurons takes place through controlled flow of charged ions through neuronal membranes. This ion transfer is controlled by specialized neuronal channel proteins which are present in the neuronal cell membrane.

These channel proteins allow for hydrophillic passage of ions and water molecules across the neuronal membranes.

Ribosomes that are attached to the RER are involved in protein synthesis. They carry the code for proteins carried by the mRNA and translate into respective protein.

The RER along with some free ribosomes cluster together as Nissl bodies and are mainly involved in neuronal specialized proteins.

3 0

2 years ago

Robert Paine studied sea stars in the intertidal zone along the northern Pacific coast. When he removed sea stars from a study a

Sergeu [11.5K]

Explanation:

In the given example sea star played the role of keystone species

Robert Paine actually coined the term keystone species to describe the effect that the sea stars had on biodiversity in this community
Keystone species are those species which are least abundant but play a governing role to decide the structure and function of community
Loss of keystone species in a community can lead to disturbance in structure and function of a community and it cannot be recovered by other species

7 0

3 years ago