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Explain what is meant by the term phenotype?

Expression of a genotype due to interaction with the environment

Answered by Laura P. • Biology tutor

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How do the different organelles in a eukaryotic cell work together to produce a hormone such as insulin?

Hormones are proteins. Each specific protein is made up of a specific sequence of amino acids. DNA in the nucleus codes for the specific sequence. This DNA is transcribed into mRNA which leaves the nucleu...

Answered by Sri Harsha D. • Biology tutor

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What is the name of the valve responsible for preventing blood flow from the left ventricle to the left atrium of the heart?

Mitral Valve The mitral valve is a large 'flap' between the two left chambers of the heart. When this is open, it allows oxygenated blood to fill the left ventricle of the heart from the atrium. When the ...

Answered by Ella H. • Biology tutor

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What are enzymes and what factors are they affected by?

Enzymes are proteins that catalyze nearly all reactions that go on in your body that would otherwise be too slow for survival. The substances or molecules that enzymes ca...

Answered by Beatrice H. • Biology tutor

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