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Explain the sliding filament theory of muscle contraction

Muscle contraction begins after an action potential reaches the required muscle and causes the calcium ion protein channels on the sarcoplasmic reticulum to open. This allows the calcium ions to diffuse down...
IL
Answered by Isabel L. • Biology tutor
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What is differentiation and what can it tell me?

Differentiation is something you can do to a function, to tell you about the gradient of the function. For your simple linear, quadratic, cubic, etc. equations, the process is the same every single time. You...
OP
Answered by Oliver P. • Maths tutor
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How does business confidence affect the economic cycle? And why?

If a business has low levels of confidence in the economy there will be lower levels of investment and so lower economic growth. This will likely result in economic recession where the economy contracts for ...
Answered by • Economics tutor
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How do I convert between eV and J

eV means electron volt - that is, it the amount of energy required for an electron to travel down (or up) a potential gradient with a potential difference of 1V. This energy, known as the work done, W, is gi...
Answered by • Physics tutor
49013 Views

Human breast milk is produced and secreted by gland cells. These gland cells have adaptations that include many mitochondria and many Golgi vesicles. Explain the role of these cell adaptations in the production and secretion of breast milk.

(Many mitochondria) release energy / ATP for movement of vesicles / synthesis of protein / active transport; 2. (Many Golgi) vesicles transport protein / glycoprotein / milk to cell membrane / out of cell;
Answered by • Biology tutor
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