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What is the role of Tropomyosin in myofibril contraction?

Tropomyosin helps to regulate myofibril contraction. Before contraction, tropomyosin covers the myosin binding sites on the actin molecule, preventing the myosin heads from binding. During contraction, ca...

LH
Answered by Laura H. Biology tutor
10699 Views

Why is sickle cell disease most common among people living in tropical regions, and their descendants?

Sickle cell disease is caused by a recessive allele of the haemoglobin gene. When two copies are present (i.e. it is homozygous), many red blood cells become sickle-shaped, leading to disease.

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SG
Answered by Sean G. Biology tutor
18128 Views

Differentiate x^5 + 3x^2 - 17 with respect to x

When you are differentiating, use the formula:

The differential of ax^n is (n*a) x^(n-1). Or in words: 'multiply by the power, then reduce the power by 1.'

Hence for our que...

DL
Answered by David L. Maths tutor
4341 Views

What is Levi Strauss' Theory of Binary Opposites?

Levi Strauss, a French anthropologist in the 1900s, proposed a theory of 'binary opposites' which entails that the majority of narratives in media forms such as books and film contain opposing main charac...

RK
175135 Views

Examine with reference to the text, the theme of Karma Yoga in the Bhagavad Gita

The Bhagavad Gita is a series of Ancient Indian texts that are composed as a poem; the name means ‘the song of the Lord’. It forms part of ‘The Mahabharata’, a large Indian epic that teaches topics rel...

EK
3246 Views

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