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spin [16.1K]
3 years ago
14

How does the immune system defend your body?

Biology
1 answer:
slavikrds [6]3 years ago
7 0

Answer:The immune system protects your child's body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together.

Read more on Brainly.com - brainly.com/question/16566272#readmore

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49. Explain why all the wavelengths cannot enter the earth's atmosphere?
hjlf

Answer:

All the wavelengths can not reach the earth's surface always.

Explanation:

Most of the time the atmosphere absorbs the Infrared radiation from the space.  For this reason, infrared radiation can not reach the earth always. It is basically absorbed by the Co2 and water vapor present in the atmosphere.

8 0
3 years ago
During meiosis, the cytokinesis that follows telophase II results in
Rufina [12.5K]
A. four haploid cells
8 0
3 years ago
identify the subcellular structure of the neuron that forms the basis for the transmission of nerve impulses. (2 points) describ
melisa1 [442]

The subcellular structures of neuron that forms the basis for transmission of nerve impulses are the synaptic vesicles.

What are the steps in impulse transmission between neurons?

  • The action potential or nerve impulse reaches the <u>axon</u> of neuron and depolarises the membrane.
  • Voltage gated Calcium channels open .
  • Arrival of action potential causes the synaptic vesicle to attach to presynaptic membrane.
  • Calcium influx triggers release of neurotransmitter.
  • This neurotransmitters bind to postsynaptic membrane and new impulses are created.

Synaptic vesicle under resting condition:

  1. The neurotransmitter molecules are stored in synaptic vesicles.
  2. If the neurotransmitter leak from the vesicles, they are destroyed by enzymes.
  3. During resting condition, they are placed randomly.
  4. When an impulse reaches the axon, vesicles are arranged in the presynaptic membrane.

Thus from the above we can conclude that, synaptic vesicles are the subcellular structures in transmission of nerve impulses and , under resting condition they are placed randomly.

To know more about transmission of nerve impulses :

brainly.com/question/840056

#SPJ4

4 0
1 year ago
Why are dominant alleles not necessarily more common than recessive alleles?
marta [7]
It all depends on the trait. If the dominant is more common that the recessive trait then it is more likely to a dominant trait in the gene pool. But if the recessive trait is more common in the gene pool then you will have a recessive trait. Does this make sense? Let me know if I'm right!
8 0
3 years ago
Which of the following are examples of science? Mark all that apply.
Reptile [31]
I think the correct answers are options C and D. Examples of science are a farmer consulting a weather almanac to decide the best time to plant a crop and a<span> drug manufacturer testing a drug to determine its safety. These things require the knowledge on science and its related subjects.</span>
4 0
3 years ago
Read 2 more answers
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