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andre [41]
2 years ago
12

What causes the striated appearance of skeletal muscle fibers quizlet

SAT
1 answer:
Airida [17]2 years ago
7 0

The Skeletal muscle tissue has a striated appearance due to repetitive bands of the proteins actin and myosin that run the length of myofibrils.

Dark A light and bands I bands repeat along myofibrils, and myofibril alignment causes the entire cell to seem striated or banded.

<h3>What is a striated appearance?</h3>

Striated muscle tissue is made up of repeated functional units known as sarcomeres.

Sarcomeres are evident as a series of bands along the muscle fibers, which is responsible for the striated appearance seen in microscopic photographs of this tissue.

Learn more about Skeletal muscle tissues at;
brainly.com/question/12252128
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Look at the map. Europe in 1940 a map of central europe. Germany is colored dark purple, and the following countries in light pu
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The purpose of this map is to show the countries occupied by Germany in 1940.

<h3>How to identify the purpose of a map?</h3>

To identify the purpose of a map we must take certain aspects into account such as:

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According to the above, in this map we must take into account mainly:

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The map shows some countries in Europe in light purple and Germany in dark purple, this can be interpreted as the location of Germany and its territorial influence in Europe during the year 1940.

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circle the correct terms for the reaction going from left to right. reactant a gains/loses and electron to become product B
Effectus [21]

The question requires one to indicate the correct terms for the reactant from left to right.

<h3>What is a reactant?</h3>

A reactant is a material that enters and changes during a chemical reaction.

1. Reactant A (Gains/Loses) and electron to become product B

To produce B, reactant A loses one electron. The loss of one electron from an atom causes the atom to be oxidized.

Reactant A gives an electron to NAD+ and is transformed to B+ in the given reaction there is an increase in the positive charge. As a result, reactant A is oxidized to produce B+.

2. NAD+ becomes reduced in the process of the reaction.

NAD+ receives the electron given to it by reactant A and is reduced to NADH. As a result, the positive charge of NAD+ decreases.

3. NADH is more reduced than NAD+

NAD+ receives an electron and becomes NADH. As a result, NADH is decreased more than NAD+

4. NAD+ is in the more oxidized state compared to NADH

NAD+ has a surplus of positive charge as opposed to NADH. NAD+ must receive one electron in order to produce NADH. As a result, as opposed to NADH, NAD+ is more oxidized.

5. Reactant A is the electron donor in this reaction.

Reactant A loses one electron, resulting in positively charged B+. This electron is taken up by NAD+, which reduces to NADH. As a result,  the electron donor is reactant A.

6. Reactant A is the reducing agent in this reaction.

A reducing agent is a molecule that can transfer electrons.

Such a molecule has the potential to decrease another molecule while also becoming oxidized. Reactant A is the reducing agent in the given reaction, donating an electron to NAD+.

Following the electron transfer, reactant A is oxidized to product B+, and NAD+ is reduced to NADH.

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