A
A haploid cell formed in the male seminiferous tubules
The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male gonads. Testosterone causes the undeveloped tissues to differentiate into male sexual organs. Primitive gonads become testes; other tissues produce a penis and scrotum in males.
Some individuals are more likely to survive and reproduce than others because they are fit and easily adapting. This idea is called 'survival of the fittest'.
A neuron is nerve cells that transfer information within the body, chemically over short distances, using electrical signals over long ones.
As it turns out, most resting neurons are permeable to Na+ and CL- as well as K+. K+ will try to drag the membrane potential toward its (positive) equilibrium potential, while NA+ try to drag the membrane potential to its negative equilibrium potential.
The real membrane potential will be between NA+ and K+ of equilibrium potential<span>. However, it will be closer to the equilibrium potential of the ion type with higher permeability.</span>
It
is False. The skin cancer that is most likely to metastasize is not the cancer
of melanocytes instead, it is known as the squamous cell carcinoma.
<span>Squamous
cell carcinoma is usually malignant in growth and develops from the scale-like
epithelial tissue. This kind of growth
is the most potential for the metastasis to the lymph nodes, which is now known
as the squamous cell carcinoma. This
type of cancer usually becomes more severe due to the excessive exposure to the
sunlight.</span>
<span>However,
malignant melanoma from melanocytes is considered as the most deadly kind of
skin cancer and is usually hereditary in origin. This cancer is more common in men redheads
and is usually treated surgically.</span>
