What part of the cell theory explains why your skin is able to repair itself after being cut

1 answer:

6 0

Cells are created from existing cells is the part of the cell theory which explains why the skin is able to repair itself. The body produces 300 million new cells every day. After getting a cut or scratch, the skin may start bleeding. This happens when the injury tears down the tiny blood vessels that is found under the skin’s surface. The body wants to stop the bleeding so the platelets will come to the rescue.

At the cut, platelets stick together. This is how the blood clots which then become a scab. This protects the area so the cells underneath it can have the time to heal. Beneath the scab, new skin cells multiply to repair the wound. Damaged blood vessels are restored and blood cells end the infection in the wound. And also, under the scab, a new skin layer is formed.

You might be interested in

What scientist is credited with the idea of evolution via natural selection

vovikov84 [41]

Charlee Darwin <span>t is credited with the idea of evolution and the theory natural selection.</span>

8 0

3 years ago

What is a macromolecule

Sphinxa [80]

Answer:a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

Explanation:

3 0

3 years ago

" A single gene produces two different proteins, utilizing different exons. Produce the explanation"

bezimeni [28]

Answer:

Explanation:

Exons can be shuffled independently known as exon shuffling. It can be done in various ways, leading to infinite number of combinations to discover new and meaningful coding sequences hence various proteins. Due to exon shuffling, evolution need not occur only by the slow accumulation of point mutations but might also move ahead by “quantum leaps” with new proteins appearing in a single generation.

4 0

4 years ago

How does nerve impulses travel from one neuron to another?

olga2289 [7]

Answer:

(d) Electrical-->Chemical-->Electrical

Explanation:

A nerve impulse is the transmission of an electrical change along the neuron's membrane from the point at which it is stimulated (synapse). The normal direction of impulse in the body is from the cell body to the axon. This nerve impulse, or action potential, is a sudden and rapid change in the transmembrane potential difference.

Normally, the membrane of the neuron is polarized at rest, which means that the ionic constitution of the medium internal to the membrane is different from the external medium, which generates different electrical charges in one medium and the other, so this difference, ie , the potential during rest is negative (-70 mV). The action potential thus consists of a rapid reduction of membrane negativity to 0mV and inversion of this potential to about + 30mV, followed by a rapid return to values slightly more negative than the resting potential of -70mV.

Nervous impulse or action potential, therefore, is a phenomenon of an electrochemical nature and occurs due to changes in the permeability of the neuron membrane. These permeability modifications allow ions to pass across the membrane. Since ions are electrically charged particles, changes also occur in the electric field generated by these charges.

Thus, we can say that the correct answer to this question is: Electrical -> Chemistry -> Electrical

8 0

3 years ago

What is Not a factor of climate change?

VMariaS [17]

Answer:

Habitat loss, uncontrolled hunting

Explanation:

5 0

3 years ago