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kipiarov [429]
3 years ago
6

Intracranial tumors that originate directly in brain tissue are called primary intracranial tumors. True False

Biology
2 answers:
galina1969 [7]3 years ago
4 0

Answer:True

Explanation:

Primary brain tumors includes tumors that originate from the tissue of the brain or the brain's immediate surroundings.

Whereas metastatic brain tumors are those tumors which arise elsewhere in the body such as breast or lungs,and migrate towards brain(usually via bloodstream)

nika2105 [10]3 years ago
3 0
This statement is true
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There are two types of toxins; endotoxins and exotoxins. ... On the other hand, endotoxins are less lethal but can cause fever to the host. Exotoxins are secreted by bacteria and release outside the cell whereas endotoxins are bacterial toxins located within the cells.
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3 years ago
What is a biological approach to determining when a mother and her conceptus become separate individuals?
pentagon [3]

Answer:

<em>Electroencephalography.</em>

<em></em>

Explanation:

Electroencephalography is used to measure brain activity in terms of electrical activity. It is done by attaching electrodes on the scalp, or sometimes by placing electrodes directly in the brain. Using electroencephalography can help determine when the fetus starts having its own brain activities, which means that it is now a separate entity distinguishable from its mother. Using electroencephalography to see brain waves can give us a deeper insight into the age old complicated issue of when a mother and her conceptus become separate individuals.

7 0
3 years ago
Why are non-native species dangerous to ecosystems?
Vesnalui [34]

Answer & explanation:

Non-native species may be animals, plants or microorganisms introduced into an ecosystem of which they are not originally part, but where they adapt and come to dominate, harming natural processes and native organisms.

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Therefore, it can be concluded that this action may cause the destruction of some species, directly affecting the balance of that ecosystem.

8 0
3 years ago
A student was setting up beakers that contained different solutions in order to conduct a laboratory investigation, but the next
alex41 [277]

Answer:

See the answer below

Explanation:

In order to test for starch and distinguish the beaker containing a mixture of startch and water, a small quantity of the solutions in each beaker should be taken and and drops of iodine added. The solution that gives off a <u>blue/black</u> color from the yellow/brown color of the iodine would be the starch water solution.

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4 0
2 years ago
As food passes through the alimentary canal, the presence of chemical secretions will occur in which order?
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The alimentary canal includes mouth, esophagus, stomach, small intestine, and large intestine. As food passes through the alimentary canal, it is exposed to the different chemical secretions from the organs of the alimentary canal, as well as from other organs, such as liver and pancreas.
First, in the mouth, salivary glands produce saliva which <span>contains enzymes involved in the food digestions. After the food is passed to the esophagus, it produces mucus to help passage of the food. In the stomach, acid and pepsinogen, as well as mucus are produced. All of these secretions help food digestion. Small intestine also produces some digestive enzymes. Further, bile from liver and enzymes from pancreas are secreted via ducts into small intestine. Finally, large intestine secretes mucus for lubrication.</span>
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