Cell Regulation Assignment 6.5

Which phrase best describes a common characteristic of all cancers?

• absence of cyclins
• damaged DNA
• uncontrolled cell growth
• inherited from parents

Which of the following correctly describes cells that are in the G₀ phase?

• Mature nerve and muscle cells are unable to divide and are permanently in G₀.

• Many cells enter G₀ when they reach the checkpoint during the M phase.

• Cells in G₀ are growing and preparing for cell division.

• DNA replication occurs during G₀.

When it occurs at the proper time, programmed cell death (apoptosis)

• will disrupt homeostasis
• may cause defective genetic info to be passed to the next generation of cells
• is an important regulatory process that maintains the health of a multicellular organism
• can contribute to the development of cancer

What kind of a gene is p53?

• Proto-Oncogene
• Oncogene
• Tumor Suppressor Gene
• Proto-Tumor Suppressor Gene

Which of the following is a type of protein that regulates the cell cycle? 

• actin 
• myosin 
• cyclin 
• pepsin 

What is apoptosis?

• A tumor

• A protein

• Programmed cell death

• Cell cycle checkpoints

DNA is replicated during ______ of the cell cycle.

• G1
• S
• G2
• G0

Which of the following shows the correct sequence of the cell cycle?

• Mitosis-> G1->S->G2->cytokinesis
• S->G1-> G2-> mitosis-> cytokinesis
• cytokinesis->mitosis->G1->S->G2
•  G1->S->G2->mitosis->cytokinesis

Mitosis is considered this type of reproduction

• sexual
• asexual

If a cell starts with 46 chromosomes and goes through mitosis. How many chromosomes will the daughter cells have? 

• 46
• 23
• 92