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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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Urinary retention with consistent or intermittent dribbling of urine is called a. mixed incontinence. b. overflow incontinence.
NeTakaya

Answer:

b. overflow incontinence

Explanation:

Overflow incontinence is a medical condition that is characterized by uncontrolled leakage of urine from filled urinary bladder in the absence of the urge to urinate by the affected individual.

It is a condition that is usually caused by blockage of bladder outlet or weakness in the muscle responsible for the expulsion of urine from the bladder.

The correct option is b.

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Why was the Euglena green in color? What is the name of the specialized body structure that is located at the base of the tail?
Leni [432]

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Explanation:

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This green color which them form are mainly due to the chlorophyll that is contained in the chloroplast of the organism. chlorophyll is known to be the pigment that is responsible for the green color.It is the cause for the green color in this case too.

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