Chapter 9 Biology

Identification

100

The structure where sister chromatids are attached during the first stage of mitosis

centromere

200

Substances that are known to cause cancer

Carcinogens

300

The stage of the cell cycle during which the cell’s nucleus and nuclear material divide and move to opposite ends of a cell

Anaphase

400

The relaxed form of DNA in the cell’s nucleus

Chromatin

500

The method of reproduction that single-celled organisms undergo 

Binary Fission

Cellular Growth

100

What are the three main phase of the cell cycle?

Interphase, Mitosis, Cytokinesis

200

1. Which cell process is not affected by cell growth?

2. 
   

   1. The transport of substances through the cell

   2. Passive transport of materials across the plasma membrane

   3. Communications of code/information to organelles

   4. All of these processes are affected by cell growth.

All of these processes are affected by cell growth.

300

T/F: Prokaryotic cells do not have a nucleus.

True

400

1. Which of the following factors most limits the maximum size to which a cell can grow?

2. 
   

   1. The ratio of the cell’s surface area to volume

   2. The type of organism to which the cell belongs

   3. The specific type of cell it is (nerve, blood, muscle, etc.)

   4. There is no limit to the size that a cell can grow

• The ratio of the cell’s surface area to volume

500

During which substage of interphase does the cell copy its DNA in preparation for cell division?

Systhesis, S

Mitosis and Cytokinesis

100

What are the phases of mitosis in order?

Prophase, Metaphase, Anaphase, Telophase

200

In which form of cytokinesis will you find the growth of a septum preceding the separation of the two daughter cells? Animal, plant, or prokaryotic cell?

Prokaryotic Cell

300

The ___ is composed of spindle fibers, aster fibers, and centrioles.

Spindle aparatus

400

T/F: Mitosis in multicellular organisms helps regulate aerobic and anerobic processes.

False

500

Give a very brief description of every phase of mitosis.

See notes.

Cell Cycle Regulation

100

What do we call unspecialized cells?

Stem cells

200

Why are stem cells of interest to scientists?

Stem cell research may lead to finding cures for diseases and healing for injuries

300

T/F: If someone's mother, grandmother, and great grandmother had cancer, that doesn't neccesarily make them more succeptable to getting cancer themselves.

False

400

If you see someone with webbed fingers, that is a sign that what bodily process failed to occur?

Apoptosis

500

The two substances that signal the cellular reproduction process are ___ and ___. 

cyclins and cyclin-dependent kinases