Facilitated diffusion is a form of passive transport hence no energy is required by the cell. This means that while the molecules are moving down a concentration gradient – line normal diffusion – the movement of the molecules needs to be facilitated (in this case by a transmembrane protein) either because the molecule is polar and can't pass through the hydrophobic region of the cell membrane, or the molecule is too big to passively pass through the small natural pores of the cell membrane.

5 0

2 years ago

Which factor when doubled would produce the greatest change in the centripetal force?

yaroslaw [1]

Let us consider the centripetal force equation,
centripetal force F = mvÂ˛ / r
f= force
v= velocity
m= mass
r= radius.

in all the factors only velocity has the power of 2. so when you double the velocity then it will become square of that.
if v= 2v , F = m4vÂ˛ / r
so velocity is doubled it would produce the greatest change in the centripetal force.

7 0

3 years ago

The constant, dynamic process of continual addition of new bone tissue (bone ____________ ) and removal of old bone tissue (bone

elixir [45]

Answer:

(Bone deposition),

(Bone resorption),

Remodeling

Periosteal ,

Nedosteal,

The compact bone,

Spongy bone.

Explanation:

The constant, dynamic process of continual addition of new bone tissue (bone deposition) and removal of old bone tissue (bone resorption) is a process called bone remodeling. This ongoing process occurs at both the periosteal (outer) and nedosteal (inner) surfaces of a bone.

It is estimated that about nedosteal of the adult human skeleton is replaced yearly. This process does not occur at the same rate everywhere in the skeleton. For example, the compact bone in our skeleton is replaced at a slower rate than the spongy bone.

5 0

2 years ago