BIO EXAM 2 cancer

centromere

duplicated chromosome remains tightly paired with its partner at a region called the

chromatin

DNA and protein together form a complex called

As mitosis begins, ____

are linked together at the centromere.

daughter cells

sex chromosomes

homologous chromosomes

sister chromatids

sister chromatids

proto-oncogene

normal gene that, if mutated, can lead to cancer is called a(n)

oncogene

gene that causes a cell to become cancerous is called a(n)

tumor-suppressor gene

gene that encodes proteins that inhibit cell division. Such proteins normally help prevent cells from becoming cancerous.

How does cytokinesis occur in a dividing animal cell?

By the formation of a cleavage furrow

By the formation of a cell plate

By the mitotic spindle pulling the daughter cells apart

By the formation of a strip of new membrane that separates the daughter cells

By the formation of a cleavage furrow

Are there ways to prevent cancer?

Yes, cancer can be prevented, but only with intense exercise.

No, cancer cannot be prevented; it can only be treated.

No, cancer cannot be prevented or treated.

Yes, there are many ways cancer can be prevented, including through a healthy diet and exercise.

Yes, there are many ways cancer can be prevented, including through a healthy diet and exercise.

How does a cell typically know when to divide?

Tumor suppressor genes code for growth factor proteins that initiate cell division.

Proto-oncogenes code for growth factor proteins that initiate cell division.

Oncogenes code for growth factor proteins that initiate cell division.

Cells have an internal clock and divide only when they reach a certain age.

Proto-oncogenes code for growth factor proteins that initiate cell division.

Which of the following mutations can help lead to cancer?

Mutations to growth factors

Mutations to proto-oncogenes

Mutations to tumor suppressor genes

All of the above would lead to cancer

All above would lead to cancer

Which of the following is a type of treatment for cancer?

Removing the tumor through radiation therapy

• Removing the tumor through surgery

Chemotherapy

• All of the above are ways that cancer can be treated

All of the above are ways that cancer can be treated