Biology Forum Cell Biology cell transport

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    • #3262
      vaytfam
      Participant

      im answering questions for my IB Biology class and i need some help…

      After a cookie has been digested, glucose molecules enter the bloodstream by the process of
      A) phagocytosis
      B) diffusion
      C) ingestion
      D) pinocytosis

    • #37644
      Dr.Stein
      Participant

      I DO know the answer, before I tell you, could you please tell me the definition of those four options? 😉

    • #37678
      jnkdna
      Participant

      hey doc u act like a teacher even on the internet!! u dont give straight answers! u make sure we understand wat wer asking right? dats good!

    • #37679
      opuntia
      Participant

      I guess it’s because the question looks more like a home work question 😉

    • #37741
      MrMistery
      Participant

      actually it’s neither 😆 😆 😆
      A glucose molecule is taken in by an enterocyte(a cell of the small intestine) by a Na-assisted secondary active transport mechanism. two Na molecules(rarely, only one) and one glucose molecule attach to the protein and enter the cell. They travel down the concentration gradient of NA, but glucose also enters the cell, by this mechanism called a symport.
      From the enterocyte the glucose molecule enters the bloodstream by facilitated diffusion, according to it’s own concentration gradient. It travels through a permease of the GLUT family.

      Not a good question for someone who hasn’t learned the functioning of membrane transport. But you can go to your teacher with my explanation and probably get an A 😆

    • #37814
      Dr.Stein
      Participant
      quote jnkdna:

      hey doc u act like a teacher even on the internet!! u dont give straight answers! u make sure we understand wat wer asking right? dats good!

      I didn’t act like a teacher because I am a real teacher, both online and offline. This "teacher attitude" becomes my nature 8) And my motto is "Dr.Stein will answer your question with question" be careful mwahaha 😈 😀

      Andrew: Enterocyte? 😕 I know it is "gut cell" but just sound ‘strange’ to me, I never use that term because it is totum pro parte 😆

    • #37835
      jnkdna
      Participant

      u make life so complicated doc!!

    • #37849
      victor
      Participant

      yeah..yeah…I agree….life is already complicated and you make it far more complicated…hahaha

    • #37910
      MrMistery
      Participant

      @Dr.Stein
      I like the term, the romanian term is much longer, so it has become a habbit. I use it in english too, even if the english "gut cell" is shorter out of habbit 😆

    • #38045
      mikegugugu
      Participant

      C I guess

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