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Ipatiy [6.2K]
3 years ago
15

The endosymbiosis theory states the origin of eukaryotic cells began when

Biology
1 answer:
Art [367]3 years ago
5 0

It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes.

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Suppose that a person takes a fall while hiking and develops tetanus when the pathogen enters through an open wound in their arm
qaws [65]

The tetanus infection is considered to be a Droplet infection.

<h3>What is Tetanus?</h3>

Tetanus is a neurological disease which is characterized by the occurrence of spasms in the muscle.

Tetanus can be caused if initial care does not take place after the wound occurs and therefore, it is very important to immediately take care of the wound.

To treat the wound tetanus immunoglobulin and tetanus toxoids are given to the person, however, it is necessary to give the two injections using different syringes and at different sites, because the immunoglobulin can cause neutralization fo the toxoid.

Thus, this could be the answer.

To learn more about Tetanus click here:

brainly.com/question/15357494

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4 0
1 year ago
The geometry of a solar eclipses is as follows.
siniylev [52]
A) Earth moon sun
the moon blocks the sunlight from the ground creating a solar eclipse.
4 0
3 years ago
Which of the pathogens could most likely be effectively treated with antibiotics?
olga_2 [115]

Answer:

B

Explanation:

You wont need to go get antibiotics to treat a common cold, just use over the counter meds. Strep and tuberculosis are more contagious and powerful.

4 0
3 years ago
Which organelle breaks down food into molecules the cell can use
natita [175]
The mitochondria breaks down food into molecules the cell can use.
4 0
3 years ago
Read 2 more answers
The muscle cells of people with muscular dystrophy lack a protein, called dystrophin, that helps maintain the sarcoplasmic retic
bonufazy [111]

Answer: It will affect muscle contraction because it is needed for the formation of muscle contraction cross-bridge.

Explanation: During muscle contraction calcium binds to troponin, a protein complex that regulates muscle contraction by exposing the binding site of actin filament. Actin filament active site is where myosin head binds to, creating a cross-bridge using enzyme ATPase to speed the reaction. Calcium ion are needed to activate troponin movement, otherwise it stays in its inactive form blocking the active site of actin filament. Without calcium ions, troponin will not move and there will be no muscle contractions.

6 0
4 years ago
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