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Eukaryotic Cells- Eukaryotic cells are multicellular and more complex- Contain membrane bound organelles, so this includes a nucleus, which contains the genetic material as chromos...

Ultrafiltration begins in the nephron in the kidney. Blood travels through a coiled structure of capillaries called the glomerulus surrounded by the Bowman's capsule. The hydrostatic pressure of the flow...

It explains the flow of information in biological systems, especially in eukaryotes. It can be simplified to "DNA makes RNA makes protein". This explains how DNA, which is passed down the genera...

This is a rather fundamental question and it's important to get it right. Remember, the central dogma of biology is, in its most basic form, DNA makes RNA makes protein. Transcription is the process by wh...

Good question. You must think about these questions in progressive steps. The first step is given - vasoconstriction. What does this cause? A reduction in the diameter of the blood vessel. So you've got t...