Studied by 1 personIs it better for a cell to have high or low SA:V ratio?
a high ratio
Why is SA:V ratio important?
the higher ratio allows for more things to enter and exit, a more efficient cell
What is the longest part of the cell cycle?
Interphase is the longest part of cell cycle
Define Mitosis?
a type of cell division that results in two identical daughter cells
Body cells are known as ______?
somatic cells
What happens in mitosis?
cell division
What happens in S Phase?
dna replication
What happens in G0?
rest
What happens in G1 ?
growth
What happens in G2?
preparation
When do sister chromatids form?
during S Phase
When do sister chromatids separate?
during anaphase
When does the cell make a copy if the DNA?
during S Phase
Explain why DNA replication is important in cell division?
to ensure that both cells are produced the exact same, so they can function properly
What is the overall purpose of mitosis?
to make 2 identical cells, duplicate the nucleus.
Why is it important a spindle fiber attach to each chromosome? What could happen if it doesn’t?
To make sure each one of the cells has the same number of chromosomes
If a cell has 10 chromosomes how many chromosomes will its daughter cells have after mitosis?
10
When does spindles start to grow?
Prophase
When do chromosomes uncoil?
Telophase
When do chromosomes make copies?
during S Phase
When do centromere split?
during anaphase
When do cytoplasm divides?
cytokinesis
When do sister chromatids separate?
during anaphase
When do nuclear membrane disappears?
prophase
When do new nuclear membranes form?
telophase
When do chromosomes line up in the middle?
Metaphase
Compare & contrast cytokinesis in plant vs. animals?
In animals the cytokinesis stage allows the cell to be pinched in creating a cleavage furrow. But in plants the cell wall blocks them from being pinched in. Both have the organelles replicated.
What is cancer?
uncontrolled cell division
What is metastasis?
spreading of cancer from home tissue
What four characteristics do all cancerous cells exhibit?
Grow and divide abnormally, cytoplasm and cell membrane become altered, cells have a weakened capacity for adhesion, usually have lethal effects if left untreated
Difference between benign and malignant tumors?
Benign is non-cancerous and remains in home tissue, malignant is cancerous and invades other tissues
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