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Outline the importance of photosynthetic pigments in photosynthesis

Photosynthetic pigments are found in certain proteins and absorb photons (waves of light) at particular wavelengths. This absorbance causes electrons in the pigments to become excited and they increase in en...
Answered by • Biology tutor
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Explain why glucose is needed for the contraction of skeletal muscle.

Skeletal muscle use glucose in glycolysis to generate ATP, the energy currency of the cell. ATP binds the myosin head in skeletal muscle to displace actin (a protein bound as part of the muscle contraction c...
Answered by • Biology tutor
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What is Social Control?

Social control is a really interesting concept that is the fundamental principle for explaining why most people like us will tend to follow orders in society and avoid committing crime and deviant or abnorma...
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Answered by Aneesa A. • Sociology tutor
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Explain how fiscal policy could be employed to pull an economy out of a recessionary gap

Fiscal policy is concerned with the manipulation of government income and government expenditure to influence the level of aggregate demand in an economy. When adopting fiscal policy measures, a government w...
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Answered by Amit K. • Economics tutor
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How do I know when to use the subjunctive or indicative with the word 'cuando'?

'Cuando' belongs to the group of 'conectores temporales', or, words that help us to express actions in different points of time. 1. If you want to describe an action that is habitual or set in the past you u...
Answered by • Spanish tutor
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