Graded Questions Diffusion to produce sugar molecules in their leaves. Some of t
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Graded Questions Diffusion to produce sugar molecules in their leaves. Some of this sugar is needed by cells in the roots. Would you expect pla 1rty on diffusion to transport the sugar O Yes, because diffusion well appen naturaly, O Yes, because all materials in living tissues move by diffusion ONO, because it would take too long for the sugar molecules to dfuse that tar O No, because diffusion only operates over small distances, not over long distances molecules from leaves to roots, and why? so the plant does not have to spend energy on it 1.7. To move to the roots of a plant, a sugar molecule must exit the cell where it was produced and enter the stream of plant Suid that carries sugar to other parts of the plant known as phloem). A newly created sugar molecule is transported to be phloem through diffusion. This mean, that sugar O Move completely randomly until by accident they exit the cell and enter the phioem Travel away from the cell organele (the chloroplast). where they are produced und they enter the pioem O Travel away from areas of the cell with high concentrations of sugar, such as the chloroplast, until they enter the phloem Move randomly urtl rey ercorter thephlern, and then stop moving as they are carned alrg by the phloem toe. foot, 01.8. The tips of neuronal axons communicate with other nerve cells by releasing small molecules called neurotransmiters. These neurotransmitters need to cross a very tiny pocket I fluid to reach the next neuron; the distance is about 0.001 times the length of the smallest axon in this lab. Could this happen through diffusion? O Yes, bec.ause the neurotransmitters will want to reach their target neuron on the other side of the fluid pocket O Yes, because the neurotransmitters are at high concentration near the diffusing axon and at low concentration next to the receiving neuron O No, bec ause diffusing any distance takes a very long time, and neural communic ation has to happen rapidly O No, because diffusion does not work within very small spaces, only in large areas where there is room for the molecules to moveExplanation / Answer
1.6. Yes, because diffusion will happen naturally, so the plant does not have to spend energy on it.
Diffusion helps in the movement of sugars from an area of higher concentration i.e. leaves to an area of lower concentration i.e. roots via the phloem.
1.7. travel away from the areas of the cell with high concentration of sugar, such as the chloroplast, until they enter the phloem.
1.8. Yes, because the neurotransmitters are at high concentration near the diffusing axon and at low concentration next to the recieving neuron.
The neurotransmitters move across the synaptic cleft by the process of diffusion from the region of high concentration to the region of low concentration.
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