SCI 8 Week 4 Splitsville

The storage of energy and gathering of genetic materials for DNA replication happens during what stage of the interphase?

• G1 Phase

• S Phase

• G2 Phase

• Mitosis

What happens during the S phase?

• There are almost no changes could be observed in a cell

• DNA is replicated which results to a copy of chromosome-sister chromatids- bound by the centromere

• Cell reacquires the energy expended and starts to synthesize the proteins needed by the cell for chromosomal manipulation

• the cell stops growing and it prepares itself so it could split into two identical daughter cells.

During the cell cycle, the cell uses most of its time in_______.

• Acquiring energy and resources.

• Replication of chromosomes.

• Splitting into two daughter cells.

• Being idle or having no activity.

Which checkpoint checks whether the cell has enough resources to continue DNA replication?

• G1 checkpoint

• G2 checkpoint

• M checkpoint

• Both a and b

This checkpoint is also called the spindle checkpoint.

• G1 checkpoint

• G2 checkpoint

• M checkpoint

• Both a and b

What is the primary cause of uncontrolled cell cycle?

• Damage in the cell structure

• Damage in genetic materials

• Death of a cell

• Bacterial infection

There are three genes that control the cell cycle: proto-oncogene, tumor suppressor gene and DNA repair gene. Which among these three signals the cell to grow and divide?

• Proto-oncogene

• DNA repair gene

• Tumor suppressor gene

An abnormal growth of cells has been detected by doctors in the skin tissue of a patient. It started to form a lump at the surface of the skin. Which among the three genes that we have discussed is damaged?

• Proto-oncogene

• DNA repair gene

• Tumor suppressor gene

• Any of the three

Which of the following statements is true about malignant and benign tumors?

• Malignant tumor is less dangerous that benign tumor

• Malignant tumor stays in one specific tissue while benign tumor spreads

• Malignant tumors only happen in specific body tissues while benign tumors could develop in any organ tissue.

• Malignant tumor spreads while benign tumor stays in one specific tissue

What is metastasis?

• It is a stage wherein a benign tumor starts to grow in body tissues.

• It is a stage wherein a benign tumor starts to spread throughout the body.

• It is a stage wherein malignant tumors stop spreading through the bloodstreams.

• It is a stage wherein a malignant tumor spreads throughout the body