What is cellulose?

881

---

What is the control center of the cell?

958

---

How many cells are in the average human brain?

844

---

What does an osteoblast cell do?

991

---

Are there ribosomes in a plant cell?

858

---

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

861

---

What is cell biology?

952

---

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

858

---

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

1108

---

What are the balanced chemical equations of breathing?

987

---

What are some examples of chemical and physical changes?

1005

---

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

941

---

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

969

---

What is the importance of genetics?

997

---

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

887

---