How does facilitated diffusion present similarities with enzymatic chemical reactions?

919

---

Of what substances is the nucleolus made? Is there a membrane around the nucleolus?

835

---

How is the fluid that fills the nucleus called?

882

---

What is meant by suction force of the plant cell? Does the suction force facilitate or make difficult the entrance of water in the cell?

888

---

What is deplasmolysis of plant cells?

812

---

What are cilia and flagella? How do these structures acquire movement? What are some examples of ciliated and flagellated cells in humans?

780

---

What is the formula of the DPD for withered (shrank) plant cells? How is that situation possible?

816

---

What is heterophagic intracellular digestion? How is this process accomplished?

816

---

What is mass transportation across the cell membrane?

798

---

How does the sodium-potassium pump present in the cell membrane work? What is the importance of this protein for the cell?

906

---

What is the structure that maintains identical chromatids bound?

840

---

What is the difference between the concepts of karyotype and genome?

898

---

What are some biological examples in which lysosomic enzymes play fundamental role?

981

---

What is the name of the membrane that delimits the nucleus? To which component of the cell structure that membrane is contiguous?

860

---

Do all eukaryotic cells have nucleus and only one nucleus?

838

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