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michaeljordan23

  • one year ago

What does it mean for a membrane to be selectively permeable? Only certain molecules are allowed to pass through. The membrane is rigid and only allows water to pass through. All types of molecules are able to pass into the cell. The membrane is rigid and nothing can enter or leave the cell.

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  1. Koikkara
    • one year ago
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    \(\small\rm\color{green}{It's~Your ~Turn~!}\) \(Try~!\)

  2. anonymous
    • one year ago
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    Think if a membrane like a body guard type of doorman. Hes the one who only lets specific people in. and out. hes a selective doorman. what would your answer be?

  3. michaeljordan23
    • one year ago
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    Then newer is a?

  4. anonymous
    • one year ago
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    right on! :)

  5. anonymous
    • one year ago
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    answer*

  6. michaeljordan23
    • one year ago
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    During the light-dependent reaction of photosynthesis, light energy is converted into which form of energy? chemical mechanical thermal electrical

  7. anonymous
    • one year ago
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    would you be so kind as to give a medal?

  8. anonymous
    • one year ago
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    oh i think i know this

  9. michaeljordan23
    • one year ago
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    Absolutely, could help me with the questions I have left please?

  10. anonymous
    • one year ago
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    yes i can

  11. anonymous
    • one year ago
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    oh i had a project on this let me check it real quick

  12. michaeljordan23
    • one year ago
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    I think it's A

  13. anonymous
    • one year ago
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    Yes youre right. it converts into atp and nadph, which are both chemical energy

  14. anonymous
    • one year ago
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    heres the pic i had in my project

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  15. michaeljordan23
    • one year ago
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    Why is the Calvin cycle considered a dark reaction?

  16. michaeljordan23
    • one year ago
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    Why is the Calvin cycle considered a dark reaction? It occurs only at night. It requires an absence of light. It turns the plant dark green. It can proceed in the dark.

  17. anonymous
    • one year ago
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    The answer is D BECAUSE a dark reaction can either carry out at night or at daytime. it doesnt need sunlight because its not fueled with light. its energy source is CO2 from the air.

  18. michaeljordan23
    • one year ago
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    Which is true for both photosynthesis and cellular respiration? They are simple chemical reactions. They are complex chemical reactions. They require light energy from the sun. They require cells to use water.

  19. anonymous
    • one year ago
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    so it can happen either in the dark or at night.

  20. anonymous
    • one year ago
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    ok

  21. anonymous
    • one year ago
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    hmm well im thinking the last one. photosynthesis does require water. but cellular respiration PRODUCES water.

  22. michaeljordan23
    • one year ago
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    Which statement best distinguishes plant cells and animal cells? There are more ribosomes in animal cells than in plant cells. Plant cells have more lysosomes than animal cells have. Plant cells have large vacuoles, and animal cells do not. The position of the nucleus in the cells is different in plants and animals.

  23. anonymous
    • one year ago
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    cross out C because they both have vacuoles

  24. michaeljordan23
    • one year ago
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    I think its b

  25. michaeljordan23
    • one year ago
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    Is it right?

  26. anonymous
    • one year ago
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    exactly. lysosomes are in animal cells. but they dont even exist in plant cells

  27. anonymous
    • one year ago
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    WOAH wait i read that wrong

  28. michaeljordan23
    • one year ago
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    Are you gonna be online around 11 pm eastern time?

  29. anonymous
    • one year ago
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    lysosomes are in animal cells but not plant cells so you gotta cross out B too

  30. anonymous
    • one year ago
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    and no i dont think so why?

  31. michaeljordan23
    • one year ago
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    Because I just got to work, and I wondering if you could help me around that time

  32. anonymous
    • one year ago
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    You have to review the information about transport mechanisms inside human body. How molecules in the GIT pass to systemic circulation . Why some kinds of antibiotics can't pass through blood brain barrier. All these things are releated to the permeability of membranes . For example , if you have a water soluble molecule in human gut , the gut membran will not allow it to pass. Only hydrophobic molecules can pass through human gut. gut is a selective membran for lipid soluble molecules.

  33. anonymous
    • one year ago
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    I think the best answer would be only certain molecules are allowed to pass through. :)

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