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State what is meant by 'active transport' and explain how a plant root hair cell use this to facilitate nutrient uptake from the soil.

(I have underlined any keywords in this response) Break this question down into 2 halves to make it easier to answer: "What is meant by 'active transport' " : Active transport is the movement of mo...
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Answered by Cemal M. • Biology tutor
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How is DNA replicated?

DNA is found in the nucleus of all human cells (except red blood cells). Its double-stranded, helical structure contains all of the information required for the body to produce new proteins- it simply needs ...
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Answered by Sarah D. • Biology tutor
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Explain the differences between eukaryotic and prokaryotic organisms

There are four main differences; 1. DNA - Eukaryotes have linear DNA whereas prokaryotes have circular DNA. The DNA in eukaryotes is also protien bound, this is not the case in prokaryotes. 2. Organelles - E...
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Answered by Kate S. • Biology tutor
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Describe the structures of proteins

Primary structure - a sequence of amino acids in a polypeptide chain. They are joined together by peptide bonds. The sequence of amino acids determines the rest of the proteins structures. Secondary structur...
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Answered by Phoebe M. • Biology tutor
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Questions: Sickle-cell anaemia is an inherited condition caued by a dominant allele. Sickle cell anaemia is a disorder of the blood caused by an inherited abnormal haemoglobin the abnormal haemoglobin causes...
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Answered by Mark S. • Biology tutor
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