Answer:
It lacks nucleus.
Explanation:
Prokaryotic: cells that lack a true nucleus or membrane bound organelles.
- Pro- before
- Karyo- Nucleus
How is controlling wide spread/contagious diseases made difficult by the fact that it spreads through multiple species of animals?
(is it still too complicated?)
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>
SUMMATION is the process by which excitatory and inhibitory impulses are combined to determine whether or not a neuron fires.
In physiology, summation is the additive effect of numerous electrical impulses on a neuromuscular junction which is the junction between the nerve cell and muscle cell. The stimuli cannot evoke a response individually. But, collectively they can generate a response.
The summation of postsynaptic potentials, which are excitatory postsynaptic potentials (ESPs) and inhibitory postsynaptic potentials (IPSPs) by a postsynaptic neuron allows a neuron to integrate the electrical information received that is provided by all the inhibitory and excitatory synapses acting on it at any given moment. Whether the totality of active synaptic inputs results in the production of an action potential, this entirely depends on the balance between inhibition and excitation.
Summation has two types: temporal summation and spatial summation. The former is the successive stimulation on one nerve. The latter, on the other hand, is the addition of simultaneous stimuli from conducting fibers.
Therefore, the answer is B. SUMMATION.
Carbohydrates, lipids, proteins and nucleic acids.
