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Basile [38]
4 years ago
11

When the body is invaded by antigens, the immune system forms substances called?

Biology
1 answer:
Fantom [35]4 years ago
4 0
<span>Antibodies. A. k.a. immunoglobulins. They are produced by a group of white blood cells called B lymphocytes (or B cells). There are 5 classes of immunoglobulins; IgM,IgA,IgE,IgG and IgD.The classes of antibody diifferent both in their constant region and in their activity.IgG, the most common antibody, and is found mostly in the blood and tissue fluids, and IgA is localized in the mucous membranes which line the respiratory and gastrointestinal tracts.</span>
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If water molecules inside and outside of a cell became non polar , how would the transport of materials in and out of the cell b
postnew [5]
<h2>Answer:</h2>

The water will move in and out freely. The material transport which is due to the water transport will be affected.

<h3>Explanation:</h3>
  • Water is a partially polar molecules. Many ionic compounds and ions travel inside and outside the cell due to attachment with water molecule.
  • As well as water movement is controlled due to its polar nature through cell membrane. and the cytoplasm and outer environment is separate due to non polar cell membrane.
  • If the water become non polar then the movement through cell membrane will be easy for water. And the molecules dissolved in water will also be transported uncontrollably.

4 0
3 years ago
What does biodiversity describe?
mel-nik [20]

a)the number of species on Earth  or b)the number of individual organisms on Earth

6 0
3 years ago
Autotrophs may survive when heterotrophs cannot because autotrophs are able to
tino4ka555 [31]
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8 0
4 years ago
The correct chronological sequence of how the endocrine glands are activated during the alarm reaction stage is
Gekata [30.6K]

Answer:

The correct sequence is: Hypothalamus, Pituitary, Adrenal

Explanation:

The endocrine system comprises of cells, tissues, and organs that discharge hormones as an essential or auxiliary capacity. The endocrine gland is the significant part in this system. The essential capacity of these ductless glands is to discharge their hormones straightforwardly into the encompassing liquid. The interstitial liquid and the veins at that point transport the hormones all through the body. The endocrine system incorporates the pituitary, thyroid, parathyroid, adrenal, and pineal organs

5 0
3 years ago
I need help please answer this. whoever does this will be marked as brainlest
mario62 [17]

there no radius for diagram

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