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makkiz [27]
4 years ago
10

When the cell concentrates potassium within, against the natural tendency of matter, it is performing:

Biology
1 answer:
pantera1 [17]4 years ago
8 0
The answer is active transport. 
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A 22-year-old man is hypotensive and tachycardic after a shotgun wound to the left shoulder. his blood pressure is initially 80/
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The most appropriate next step for this process is to re-examine the chest.

Tachycardia is termed as a heart rate that exceeds normal resting rate. In adults over 100 beats per minute is being expected to a tachycardia adult.
The normal resting rate for a person depends on age. When there are excess heartbeats, then the heart pumps less efficient and provides less blood flow to the rest of body.
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4 years ago
What strength training exercise is seen throughout the "stronger" dance?
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I believe the strength training would be squats.
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3 0
3 years ago
What is the next step in muscle contraction after the actin changes shape?​
Ne4ueva [31]

Answer:

The myosin filament or more precisely the myosin head can now bind to the actin forming the cross bridges followed by a power stroke during which actin slides over myosin.

Explanation:

The muscle contraction can be explained by sliding filament theory bu Huxley and Huxley. The two muscle proteins which take part in muscle contraction are myosin and actin.

Myosin:  It is a hexameric protein. Each monomer is called meromyosin. Each meromyosin has two important parts, a globular head with a short arm and a tail. The head forms cross bridges with the actin filament. Myosin head acts as ATPase enzyme. When ATP binds, head acts as enzyme hydrolyzing the ATP to produce energy. The head also has the site for binding of actin.

Actin filament: It contains three proteins, filamentous actin, tropomyosin and troponin. Filamentous actin contains active site for myosin binding but at rest, tropmyosin covers the myosin binding site. This prevents the cross bridge formation. Tropomyosin are held in place by troponin molecules.

When calcium is available, the binding of calcium to a TpC sub-unit of troponin causes the shifting of tropomyosin-troponin complex. Now actin can attach to myosin head and slide over myosin.

The actin filaments slide over the myosin filament by the the formation of cross bridges and during this process the I-band gets reduced whereas the A band remain the same. The lengths of actin and myosin filaments remain unchanged.

7 0
3 years ago
Read 2 more answers
A LOT OF POINTS AND WILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER! HURRY PLZ!
joja [24]

2nd option, adapt means getting use to the environmwnt for survival instinct

7 0
3 years ago
Read 2 more answers
PLEASE PRIVATE MESSAGE ME THE ANSWER
liberstina [14]
Bruh ok i will private message you
8 0
4 years ago
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