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Afina-wow [57]
3 years ago
12

In a controlled experiment, which group experiences the test?

Biology
1 answer:
vekshin13 years ago
8 0

Answer:

A: the experimental group.

Explanation:

the experimental group does the experiments

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Power stroke (myosin head bends) coupled with the release of ADP and phosphate, ATP hydrolyzed to ADP and Phosphate and the Myos
svetlana [45]

Answer:

Power stroke (myosin head bends) coupled with the release of ADP and phosphate

Explanation:

Muscle contraction results from myosin heads adhering to actin and attracting it inwards. It uses ATP. Myosin adhers to actin at a binding site of its globular actin protein and adheres at another binding site for ATP (hydrolyzed ATP to ADP, Pi  and energy)

ATP binding prompts myosin to detach from actin, ATP is changed to ADP and inorganic phosphate, Pi by ATPase. The energy formed at this process orientates myosin head to a “cocked” direction.

The myosin head goes in the direction of the M line, holding the actin with it in the process causing the filaments to orientate nearly 10 nm in the direction of the M line--- power stroke (force is produced), the sarcomere reduces in length and the muscle contracts.

Note: The power stroke is seen when ADP and phosphate disattaches itself from the myosin head.

At the terminal point of the power stroke, the myosin head as low-energy, followed by ADP release.

The attached image shows the cross-bridge muscle contraction cycle, which is activated  by Ca2+ sticking to the actin active site. And how actin moves in relation to myosin.

7 0
3 years ago
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The prevention of the long term complications associated with poorly treated diabetes mellitus by the tight regulation of blood
Tanya [424]

Answer:

sugar level

Explanation:

Diabetes mellitus , in simple language known as the diabetes , is a group of metabolic disorders which are due to increased level of blood sugar over a long period of time .

The symptoms are -

feeling thirsty , frequent urination and increased hunger .

<u>Untreated diabetes can lead to many problems , even can be fatal .</u>

The acute problems due to diabetes are - hyperosmolar , ketoacidosis or death .

There can be some serious problems which are life long -

like stroke , foot ulcers , damage to the eyes , cardiovascular disease .

7 0
3 years ago
Important vocabulary continued: what is the difference between a unicellular organism and a multicellular organism?
saveliy_v [14]
Unicellular has one singular cell, multicellular has more than one
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As food moves through the digestive tract it spends the most time in the:
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As food moves through the digestive tract, it spends the most time in the large intestines. This is because of the need to absorb water and partially digest fiber.
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3 years ago
For many years, whole or fragmented hominid skulls have been excavated. Some of these skulls date from as early as 6 million yea
hjlf
The corrected answer is D
8 0
3 years ago
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