What is cellulose?

930

---

What is the control center of the cell?

1030

---

How many cells are in the average human brain?

892

---

What does an osteoblast cell do?

1055

---

Are there ribosomes in a plant cell?

907

---

What are two things that enter the cell for cellular respiration?

904

---

What is cell biology?

1027

---

What happens when the cell membrane or plasma membrane ruptures or breaks down?

912

---

In 1884, the danish microbiologist hans christian gram invented the gram stain, which delineates the difference between what two general types of bacteria?

1164

---

What are the balanced chemical equations of breathing?

1039

---

What are some examples of chemical and physical changes?

1038

---

If curly hair is genetic, why do you have curly hair if none of your ancestors did?

995

---

How is a genetic trait determined by the genetic code within a dna molecule?

1023

---

What is the importance of genetics?

1044

---

Biologists usually refer to the head of a tapeworm by what name?

930

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