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Describe 3 differences between mitosis and meiosis

Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical d...
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Answered by Runzhi C. • Biology tutor
280275 Views

Describe how a heartbeat is initiated and coordinated?

The sinoatrial node (SAN) sends a wave of electrical activity across the atria causing atrial contraction. The non-conducting tissue stops the immediate contraction of the ventricles. The atrioventricular no...
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Answered by Dharani Y. • Biology tutor
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Describe how different environmental factors affect: the direction of growth of roots the direction of growth of shoots. In your answer you should refer to the role of plant hormones.

Here a thoroughly thought out response to the question should be formulated it is not enough to simply know the name and role of plant hormones within it. Start with a factor, it is helpful to know terminolo...
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What is Krebs cycle and what is its role in aerobic respiration

Krebs cycle is a series of reactions that take place in the mitochondria of most living cells and result in the production of energy during aerobic respiration. During Krebs cycle oxygen is metabolised to pr...
AT
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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, calci...
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Answered by Laura H. • Biology tutor
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