Show:
Stages of Cell Cycle
Chromosome structure
Mitosis
Cell Cycle Regulation
DNA
100
Cell cytoplasm divides
What is cytokinesis?
100
Long, thin fibers of DNA and proteins
What is chromatin?
100

Chromosomes are unwinding and become enclosed in the nucleus, and the cell begins to divide

What is telophase?

100

What is cancer defined as?

Uncontrolled Cell Division

100

What is the shape of DNA called?

Double Helix

200

What occurs during the S phase?

DNA replication

200
One half of a duplicated chromosome
What is a sister chromatid?
200

Chromosomes are lined up on the cell's equator

What is metaphase?

200

What is programmed cell death called?

Apoptosis

200

What is the monomer of DNA?

Nucleotides

300
The cell grows and carries out normal activities after division has occurred
What is the G1 phase?
300
Holds two sister chromatids together
What is a centromere?
300
The cell's chromosomes become visible, the nuclear membrane disappears, and the centrioles move to opposite sides of the cell
What is prophase?
300

Describe the role of cyclins

Internal regulators of the cell cycle

300

What does Chargaff's Base Pairing Rule State?

Thymine always pairs with adenine and cytosine always pairs with guanine

400
The stage that includes G1, S, and G2
What is interphase?
400

Visible structure seen beginning in prophase

What is a chromosome?

400
Chromatids are pulled apart and become individual chromosomes
What is anaphase?
400
Describe the role of external regulators of the cell

Proteins on cell surface can direct cells to speed up or slow down cell division.

  • EX: Growth factors speed up cell division during embryonic development.

EX: Surface proteins slow down cell division after a wound has healed.

400

Why is DNA considered semiconservative when it goes through replication?

New DNA consists of 1 parental (Template) strand and 1 new strand

500
Cell preparation for division occurs
What is the G2 phase?
500
Nucleic acid that makes up the bulk of a chromosome
What is DNA?
500
Spindle fibers appear and attach to centromeres
What is prophase?
500

What happens when a tumor metastizes?

  1. cells detach from tumor

  2. travel via blood to other areas of the body 

  3. form new tumors in new tissue




500

What is the function of the enzymes helicase and DNA polymerase?

Helicase: unzips the two strands forming a replication fork.

DNA polymerase reads the template strands and adds the complementary base pairs.