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Mandarinka [93]
3 years ago
6

The shortest day of the year in the northern hemisphere is

Biology
2 answers:
Svet_ta [14]3 years ago
6 0

Answer:

December 22nd

Explanation:

Viefleur [7K]3 years ago
3 0
A) December 22. Hope I helped :)
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Which process is responsible for the growth and repair of human tissue ?
muminat

In general, the process responsible for the growth and repair of human tissue is the healing process, which takes place in three phases.

1. inflammatory response. Injured tissues release  chemicals that draw resources to the area, alert the body that damage has occurred and inhibit function to prevent further injury.

2. Repair phase. Once injured area is walled off and debris removed, construction to  replace or repair injured tissue begins. New blood vessels grow in the injured area maximizing transport within tissue.

3. Remodeling phase. Construction of permanent tissue , typically strong scar tissue made from dense network of collagen fibers. 

Looking at it from cell level, the process of mitosis is actually taking place during  healing. 

Mitosis is used for growth and repair and produces diploid cells identical to each other and to the parent cell. 

New cells are needed throughout life. These are for growth and replacement of damaged or worn out tissue. The body obtains such through the process of mitosis.

 

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3 years ago
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What happens to contraction of a muscle cell if some of the Ca2+ that was released during a contraction is still in the cytoplas
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<h2>Muscle contraction in cytoplasm </h2>

Explanation:

  • Calcium stays in the sarcoplasmic reticulum until discharged by an improvement. Calcium at that point ties to troponin, causing the troponin to change shape and expel the tropomyosin from the coupling destinations. Cross-connect stick proceeds until the calcium particles and ATP are never again accessible.
  • ATP is basic to get ready myosin for official and to "revive" the myosin.
  • When the actin-restricting destinations are revealed, the high-vitality myosin head overcomes any issues, framing a cross-connect. When myosin ties to the actin, the Pi is discharged, and the myosin experiences a conformational change to a lower vitality state. As myosin consumes the vitality, it travels through the "power stroke," pulling the actin fiber toward the M-line.

4 0
3 years ago
aerobic respiration results in the production of large amounts of lactic acid. How does this impact the body? What is one real l
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It’s actually called anaerobic cellular respiration because you’re not using oxygen. For example, when you sprint you can’t breathe very well, so you’re not inhaling as much oxygen you need to make that energy for you to move. Your muscles will go into lactic acid fermentation, and the result of that is energy (ATP) along with lactate (lactic acid), and you will probably start feeling pain as the lactic acids build up.

Hope that helps!
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3 years ago
A student compares two different proteins. The student notices that the primary structures differ in both the number
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Answer:

A.The two proteins have different functions.

Explanation:

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3 years ago
One reason native plants are declining is that the invasive plants absorb nitrogen from the soil about twice as fast (α = 2). Ho
Dmitry_Shevchenko [17]

Answer:

α = 0 if β= 0

Explanation:

If both species want to persist in the same environment and their niches are also over lapping then both of the co-efficient values should be equal. There are two possibilities on these values for persistence. One is that one should compromise to the change produced by the invasive specie and two is that the new specie should compromise if he wants to stay (<em><u>Assuming that there is no competition</u></em>). In this way their niches won't overlap to a greater extent and therefore better chances of survival for both.

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