What are the main cytoplasmic structures present in animal cells?

987

---

What is the relation between the concepts of chromatin and chromosome? Are euchromatin and heterochromatin part of chromosomes?

936

---

What are some examples of movement created by the contraction of sarcomeres of the muscle cells?

932

---

What is cytoskeleton? What are its main constituents in animal cells?

955

---

Which cell organelles are well-developed in secretory cells?

1015

---

Which are the molecules that make possible active transport through membranes?

985

---

How does facilitated diffusion present similarities with enzymatic chemical reactions?

1026

---

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

936

---

How is the fluid that fills the nucleus called?

988

---

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?

1005

---

What is deplasmolysis of plant cells?

921

---

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

887

---

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

918

---

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

913

---

What is mass transportation across the cell membrane?

901

---