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loris [4]
3 years ago
6

What are the two different results of a lack of calcium and a lack of atp?

Biology
1 answer:
liq [111]3 years ago
6 0
<span>There are numerous proteins in muscle. The main two are thin actin filaments and thick myosin filaments. Thin filaments form a scaffold that thick filaments crawl up. There are many regulatory proteins such as troponin I, troponin C, and tropomyosin. There are also proteins that stabilize the cells and anchor the filaments to other cellular structures. A prime example of this is dystrophin. This protein is thought to stabilize the cell membrane during contraction and prevent it from breaking. Those who lack completely lack dystrophin have a disorder known as Duchene muscular dystrophy. This disease is characterized by muscle wasting begininng in at a young age and usually results in death by the mid 20s. The sarcomere is the repeating unit of skeletal muscle. 

Muscle cells contract by interactions of myosin heads on thick filament with actin monomers on thin filament. The myosin heads bind tightly to actin monomers until ATP binds to the myosin. This causes the release of the myosin head, which subsequently swings foward and associates with an actin monomer further up the thin filament. Hydrolysis and of ATP and the release of ADP and a phosphate allows the mysosin head to pull the thick filament up the thin filament. There are roughly 500 myosin heads on each thick filament and when they repeatedly move up the thin filament, the muscle contracts. There are many regulatory proteins of this contraction. For example, troponin I, troponin C, and tropomyosin form a regulatory switch that blocks myosin heads from binding to actin monomers until a nerve impulse stimulates an influx of calcium. This causes the switch to allow the myosin to bind to the actin and allows the muscle to contract. </span><span>
</span>
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The first one will be the brainest
just olya [345]
<h2>Cell Analogy</h2>

Explanation:

  • Nucleus: Parents

As we see that parents control everything in the house. Similarly,the nucleus controls everything in the cell.

  • Cell membrane: Door

A door is analogous to the cell membrane because it allows people come and go. Similarly,the cell membrane in a cell can allow certain things to enter and exit.

  • Cytoplasm: Air

The cytoplasm fills the space in a cell. It is similar to air which is filled everywhere in the house.

  • Nuclear membrane: Security guard

The nucleus in a cell is protected by nuclear membrane. The nuclear membrane is analogous to secuity guard. As people in a house are protected by security guard, similarly nucleus is protected by nuclear membrane.

  • Endoplasmic reticulum: Hall ways

Endoplasmic reticulum transport things to other places in the cell. It is similar to hallways which help us to reach different places in the house.

  • Golgi bodies: Car

The golgi bodies modify,sort and package proteins.

It send them to other parts of the cell when needed.

It is similar to a Car which transports people and can store stuffs.

  • Mitochondria: Stove

The mitochondria in a house is analogous to Stove as it breaks down nutrients and turns them into energy. Similarly, the Stove in our house, cooks foods and it is converted into energy when consumed.

  • Ribosomes: Kitchen

The ribosomes are a cell structure that make protein. It is same as a kitchen in our house where people make food or proteins.

7 0
3 years ago
The principle of competitive exclusion means that A) niche subdivision can occur. B) a niche can be shared by two species. C) co
nignag [31]

Answer:

C

Explanation:

When two species share a common niche, then one is bound to exclude the other. This is due to the stiff competition for resources. The species with a slight advantage in acquiring the resources will edge out the other species from the environment. This has been demonstrated by George Gauss using two Paramecium species grown in the same media in the lab. <em> P. aurelia</em> outcompetes <em>P. caudatum</em>

3 0
3 years ago
Transcription and Translation
AlekseyPX

Answer:

Explanation:

1. DNA: A T A C G A A A T C G C G A T C G C G G C G A T T C G G

mRNA:  U A U G C U U U A G C G C U A G C G C C G C U A A G C C

Codon:  AUG-CUU-UAG-CGC-UAG-CGC-CGC-CGC-UAA- GCC

Anticodon:  UAC-GAA-AUC-GCG-UAC-GCG-GCG-GCG-AUU-CGG

Amino Acids: Methionine-Leucine-Stop.

2. DNA: T T T A C G G C C A T C A G G C A A T A C T G G

mRNA:   A A A U G C C G G U A G U C C G U U A U G A C C

Codon:  AUG-CCG-GUA-GUC-CGU-UAU-GAC

Anitcodon:  UAC-GGC-CAU-CAG-GCA-AUA-CUG

Amino Acids: methionine-glycine-histidine-glutamine-alanine-isleucine-leucine

3. DNA: T A C G G G C C T A T A C G C T A C T A C T CA T G G A T C G G

mRNA:  A U G C C C G G A U A U G C G A U G A U G A G U A CC U A G C C

Codon:  AUG-CCC-GGA-UAU-GCG-AUG-AUG-AGU-ACC-UAG

Anitcodon:  UAC-GGG-CCU-AUA-CGC-UAC-UAC-UCA-UGG-AUC

Amino acids: Methionine-glycine-proline-tyrosine-alanine-methionine-methionine-serine-threonine.

4. DNA: G T A C G C G T A T A C C G A C A T T C

mRNA:  C A U G C G C A U A U G G C U G U A A G

Codon:  AUG-CGC-AUA-UGG-CUG-UAA

Anitcodon:  UAC-GCG-UAU-ACC-GAC-AUU

Amino Acids: Methionine-arginine-isoleucine-tryptophan-leucine

5. DNA: C G A T A C A A T G G A C C C G G T A T G C G A T A T C C

mRNA: G C U A U G U U A C C U G G G C C A U A C G C U A U A G G

CODON: AUG-UUA-CCU-GGG-CCA-UAC-GCU-AUA

Anticodons- UAC-AAU-GGA-CCC-GGU-AUG-CGA-UAU

Amino acids: Methionine-leucine-proline-glycine-proline-tyrosine-alanine-isoleucine.

7 0
3 years ago
Discuss the implications of each of the following three suggestions that were put forward to overcome the high sulphur dioxide e
Pachacha [2.7K]
1. shut down the factory
This is a suggestion that will not be implemented simply due to the fact that the factory is likely to be bringing profits and meeting the requirements of a specific product or products. Shutting the factory down will mean great losses, which makes this suggestion non-feasible.

2. Move the factory out of the city
First, "moving" a factory is not as easy as it sounds. For a factory to be set up, many factors are considered such as the availability of raw materials and transport cost. Moreover, the emissions will still not be lessened if the factory is simply moved.

3. Increase the height of the factory's chimney
If these emissions are harming the nearby environment, this suggestion will help to reduce those effects. However, the negative effects will inevitably occur if there is a high level of emission of sulfur dioxide occurring, such as acid rain. Therefore, this does not solve the problem, only changes its nature.
8 0
3 years ago
Which is a benefit of getting information from a government website? A. The information usually advocates an individual's opinio
nignag [31]

Answer:

B. The information will be reliable

Explanation:

By elimination:

Information on government websites is usually impartial, so A is eliminated. Additionally, information on a government website is not necessarily easy to understand, so that choice cannot be the correct answer either. The only remaining choice is B, so it is correct.

3 0
3 years ago
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