Okay, so I have homewrok and i dont feel like doing it, so I need some answers for 3 very easy science questions. I willl choose the best answer as the most correct. (And please make the answers sound 7/8th gradish, not highschoolish.
1) Why do organisms need to move sugars into their cells?
2) Explain how photosynthesis and cellular respiration are related
3) Are exocytosis and endocytosis examples of active or passive transport? Eplain your answer
2006-10-17 12:04:38 · 6 answers · asked by Amber R 2 in Science & Mathematics ➔ Biology
Do your own homework, if you have the time to spend online, you have time to do your homework.
2006-10-17 12:07:22 · answer #1 · answered by Candi S 3 · 4⤊ 1⤋
3.Endocytosis occurs when a cell needs cholesterol and is facilitated by the formation by the cell of LDL receptors over membrane patches rich in clathrin. The cholesterol is then transported in the cell's endocytic vesicles called 'endosomes'. Exocytosis is the reverse process whereby the cell conveys material from inside the cell to the periphery. The hormone 'insulin' is released by the pancreatic cells that synthesize it in this way.
therefore, both are examples of active transport.
2. Photosynthesis (or Photophosphoryllation) provides the energy whereby the carbon is fixed and 1 oxygen and 2 hydrogen ions are released via the photon striking the P700 and the P680 reaction centres.
1. The sugar provides the carbon which the plants obtain via the photosynthesis process.
2006-10-17 12:30:53 · answer #2 · answered by chancybutler 1 · 0⤊ 0⤋
I don't feel like doing mine either so here ya go
1. to be able to function/live (which ever u like best)
2. photosynthesis is in cellular repiration, photosynthesis creates the energy needed to run cellular repiration
3. active because they need energy to transport the substance
(your in 8th grade and doing this? I just finished this and i'm in 10th! those answers should be close cause i'm kinda a nerd like that)
Good luck!
2006-10-17 12:25:12 · answer #3 · answered by Dena T 2 · 0⤊ 0⤋
sugar- sourece of food to the cell s for cellular respiration
2) they r the oppsite of each other
don't noe the third one
!!!!
2006-10-17 15:49:05 · answer #4 · answered by deeptisharma92 2 · 0⤊ 0⤋
I don't think you're going to find anyone to help you dear. Do your own homework. If you were having trouble, you may find some help. But this is something you can look up on the Internet yourself. Sorry.
2006-10-17 12:18:19 · answer #5 · answered by jelly-bean 4 · 1⤊ 0⤋
ROTFLMAO
2006-10-17 12:11:45 · answer #6 · answered by Tangus 4 · 0⤊ 0⤋