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By what process do plants move ions from the soil exterior to the plant, into the root cells of the plant?

Active Transport Normally soil ion concentrations will be low, and high in the root cells. The ions have to move up a concentration gradient and therefore requires an energy-using process to do so.
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Answered by Miss T. • Biology tutor
3779 Views

Name the three domains of life.

Archaea Bacteria Eukaryota
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Answered by Miss T. • Biology tutor
4934 Views

Describe the cardiac cycle (7 marks)

During diastole the atria and ventricles are relaxed. The atrioventricular valves are open and the semilunar valves are closed. Deoxygenated blood enters the right atrium from the venae cavae and oxygenated ...
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Answered by Tara S. • Biology tutor
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How do electrical impulses control contraction of the heart?

Electrical impulses from the SAN (sinoatrial node) spread across the atria walls to cause contraction. The impulses then pass to the ventricles via the AVN (atrioventricular node) after a short delay to allo...
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Answered by Jack A. • Biology tutor
3242 Views

Explain the concept of recessive and dominant alleles

Firstly it is always good to relate such a concept with an example that is easily remembered and therefore easily applied. Alleles refer to alternate forms of the same gene, which code for a particular trait...
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Answered by Juliette C. • Biology tutor
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