Neurofibrils are bundle of thin microtubules and microfilaments formed by the cell's cytoskeleton, they serve as a passage for rapid transport of molecules to and from a far end of a neuron but they do not conduct impulses while nerve fibers conduct impulses.
Answer:
What can be noticed about the ligands and their receptor is that the configuration of both coincide, as a key would with its lock, which demonstrates the specificity of a receptor by its ligand.
Explanation:
A <u>ligand</u> corresponds to a molecule considered a signal or a messenger, while the <u>receptor</u> is a protein on the cell surface, with the capacity to accept a ligand.
Ligands and receptors constitute pairs that complement each other, so that <u>each receptor can bind to a specific ligand</u>, similar to what happens with a key and a lock.
Once the ligand-receptor complex is formed, changes occur inside the cell, which define a certain effect.
The two new strands are different from each other ,both of them have only one strand from the original DNA and the other strand is complementary . eg if a strand has the following base pairs .. AACCGGT ( consider this as the strands)
TTGGCCA
now they are going to be seperated AACCGGT TTGGCCA
TTGGCCT AACCGGT
as u can see the two NEW strands formed are similar but NOT IDENTICAL to each other .
The answer is In the last trimester of pregnancy. While the senses
of the fetus start to develop in the 8th week, the different sense mature
at different stages. Vision is the last sense to mature. After the 26th
week, after the eyelids of the fetus have
fully developed, the fetus begins to blink (even experience REM while involves rapid
eyelid movements ).
