Answer:
It means that the cell membrane allows certain substances to pass through and not others. As the cell membrane consists of a phospholipid bilayer with a hydrophobic core, only small uncharged hydrophobic molecules can pass through the cell membrane e.g. glucocorticoid and other larger charged particles require transporters or channel proteins to pass through the cell membrane, e.g. glucose.
Emperor penguins leave and stay for winter months.
Answer:
I think it's chromosome.
Explanation:
A chromosome looks roughly like an X, but it does not maintain it's form. IT floats around and stuff. That's why I think it's chromosome.
Answer: Myelin
Explanation:
The speed of the neurotransmission increases as we grow. The behavior of the teenager is quite different from the behavior of the adolescents.
They are more active, heroic and wants to take risk. This is because their brains are not completely developed till they reach the age of 25.
As they grow and reach the late 20s the white mater in the brain increases as the frontal lobe is the last part of the brain development.
Due to the development of the myelin in the frontal lobe the transmission of the signal increases at adolescence.
Answer:
The answer is A (2.5)
Explanation:
I looked the question up for you but since there is not a chart I can not give you an accurate explanation. Good luck !
