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Discuss how cholesterol is transported in the body, and describe these transport molecules.

Cholesterol, like other lipids, is insoluble in water. Therefore, it is transported in the blood in lipoproteins. These are spheres of lipid and protein, and are made in the liver. There are two types of lip...
NC
Answered by Nabeelah C. • Biology tutor
4609 Views

How do you structure an answer when describing a process such as the Kreb's Cycle?

Work chronologically, as you go through each step ask yourself, what, why , where , how questions?What is involved? - Pyruvic acid is converted to Acetly co-enzyme AWhy does it react?/ What conditions are ne...
MF
Answered by Maegen F. • Biology tutor
2594 Views

Cells in Plant Roots do not Photosynthesise. State one reason why.

Plant roots are underground and therefore not exposed to sunlight, sunlight is needed for photosynthesisPlant roots do not have chloroplasts/chlorophyll, chloroplasts are need for photosynthesis
SS
Answered by Sahana S. • Biology tutor
11792 Views

Describe how sucrose is loaded into the phloem (3)

Hydrogen ions are pumped out of companion cells using ATP.This creates a high concentration of hydrogen ions outside of the companion cell. H+ ions diffuse down their concentration gradient back into the com...
DR
8760 Views

Describe 3 differences between animal cells and plant cells

Plant cells all have a cell wall but animal cells do not. Plant cells contain chloroplasts but animals cells do not. Plant cells have one large central vacuole whereas animal cells do not (they have multiple...
AL
Answered by Amirah L. • Biology tutor
3554 Views