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Explain the passive transport mechanisms across a cell membrane, differentiating between simple diffusion and facilitated diffusion.

Substances move down a concentration gradient in passive transport, meaning that no energy input (ATP) is required. Hydrophilic molecules will pass down the membrane using facilitated diffusion, as they cann...
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Answered by Rares P. • Biology tutor
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What is the role of receptors in mediating steroids and protein hormones?

Steroid hormones are lipids; they can cross directly through the cell's plasma membrane and nuclear membrane, binding to receptors. Receptor – hormone complex is formed and serves as a transcription factor; ...
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Answered by Rares P. • Biology tutor
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Solving Quadratic Equations

x^2+5x+6=0 When solving quadratic equations our goal is to revert back into the form (x+a)(x+b) from the form ax^2+bx+c Thus we need to have a method when completing this: A good method in this case is that ...
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Answered by Anoop N. • Maths tutor
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How many thirds are there in 9?

Number of thirds in 1 = 3 Number of thirds in 9 = (number of thirds in 1) * 9 = 27 thirds
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Answered by Jaredd J. • Maths tutor
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State the nth term of the following sequence: 3,7,11,15,19...

nth term= 4n-1
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Answered by Jaredd J. • Maths tutor
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