Cancer
A mass of cells that keep dividing rapidly without stopping is called...
Tumor
What phase of the cell cycle does the cell grow and there is the most potential for cancer?
G1 phase
What is the first step of DNA Replication?
One, start with one DNA strand
What phase of mitosis is characterized by the spindle fibers pulling the chromosomes apart equally?
Anaphase, Remember the word "APART" or "Separate" equally!
Apples in________and Cars in the _________?
Trees, Garage
What are some possible carcinogens that can increase your chance for cancer?
What phase of the cell cycle does DNA Synthesis and DNA replication happen?
S phase
What is the second step of DNA Replication?
What phase of mitosis is characterized by the spindle fibers moving the chromosomes to the middle of the cell?
Metaphase, "middle"
What nitrogenous base does Adenine match with?
What nitrogenous base does Guanine match with?
(HINT: Just write the matching letter)
T, "Thymine"
C, "Cytosine"
What is contact inhibition?
control mechanism that tells cells when to stop dividing.
What phase in the cell cycle is characterized by a period of cells dividing?
M phase
What is the third step of DNA Replication?
Match, the DNA polymerase matches the bases to the single strand of DNA
What happens during telophase?
the cell "tears apart" and a nuclear membrane wraps around both new cells
Write what is in the complimentary structure to this image:
Phosphate, Deoxyribose Sugar, Thymine (T)
What happens if contact inhibition doesn't work or is lost? (will the cells stop dividing or will they keep dividing?)
The cells will keep dividing because contact inhibition is lost. There is nothing to tell the cells to stop dividing.
What is the very last step of the cell cycle? (Hint: think of the number of cells we start with and the number we ended up with)
cell division, two identical cells made
What is the fourth step of DNA Replication?
Twins, Two identical DNA strands are created
what happens during cytokinesis?
two new identical cells are made
What are the 3 important things to remember about DNA? (HINT: Check your notes)
1. DNA stands for Deoxyribonucleic Acid
2. DNA is found in ALL LIVING THINGS
3. DNA determines how traits are expressed!
How might mutations to DNA lead to the development of cancer? (think of how tumors are formed)
mutations can cause the cells to keep dividing which can lead to tumors and later even cancer if the tumors keep growing.
What does the "M" in M phase stand for?
Mitosis
What phase of the cell cycle do the steps of DNA replication happen?
S phase
what happens during anaphase?
the spindle fibers evenly pull apart (or separate) the chromosomes (SAME NUMBER ON BOTH SIDES)
Write the complimentary strand to this:
3' A T G G C T 5'
5' T A C C G A 3'