Hello!
To answer your question:
The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others. Small molecules that are nonpolar (have no charge) can cross the membrane easily through diffusion, but ions (charged molecules) and larger molecules typically cannot.
Two examples are:
Charged Ions
An ion is a molecule that is charged because it has lost or gained an electron.
Large Polar Molecules
Large uncharged molecules, such as glucose, also cannot easily permeate the cell membrane.
Hope this helps!
Please consider Brainliest!
Answer:
B: I saw it an hour ago and I didn't want to answer because there are too many ifs. I tried, but it could be wrong.
Explanation:
This is not as simple as it sounds and I have a feeling that the correct answer is in the head of the person designing the question. In other words, I could easily get it wrong.
It depends on whether the tide is going in or going out to start with. The question would be a whole lot easier if the bottle was dropped miles from shore.
A: The bottle is capped. A is certainly not true. The low density of the bottle will keep it afloat until something happens that determines it's permanent direction. Not A.
B: It will if nothing else influences it. There will always be waves around that will insure an up and down movement. This is a possible answer, but not a certain one. A five year old could not throw it very far to start with. Let's read the rest.
C: Maybe. It has happened. The bottle needs a good start and the tide going out to happen. Let's read the last 2.
D: Not in a million. Not D.
E: It won't be still. The ocean is always moving. Not E.
I'm going to pick B, but it is not a slam dunk.
Because the antidote healed and repaired his cells. Antidotes are when you cured from a sickness or poison .
It would have to be the third answer, "a strong thunderstorm destroys many of the nests of a bird population."
Answer:
A motor unit is a group of MOTOR NEURON and the MUSCLE FIBERS connected to it.
Explanation:
Neuron is the structural and functional unit of nervous system.
Motor unit consists of a motor neuron and the skeletal muscles innervated by the terminals of the neuron.
Several associated motor units called motor pool coordinates together the contractions of a single muscle.
That is, the activation of a motor unit leads to the contraction of all the muscle fibers attached to it.
