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bio chapter 6
| Question | Answer |
|---|---|
| zygote | being life as a fertilized egg |
| 2 examples of cell division | growth and repair |
| cell cycle | events in the call from the division pf a single parent cell to the production of two new daughter cells |
| genome | a cells complete complement of DNA |
| how many chromosomes do human body cells have | 46 chromosomes in 23 pairs |
| somatic cells | contain 2 matched sets of chromosomes |
| what is a diploid | cell having both members of the chromosome pairs |
| gametes | sex cell 1 set of chromosomes |
| haploid | 1 set if chromosomes |
| 2 major phases in cell cycle | interphases and mitosis |
| interphase | the cell grows and DNA is replicated |
| mitosis | the replicated DNA and cytoplasmic contents are separated and the cell divides |
| homologues chromosomes | matched pairs of chromosomes in a diploid organism |
| genes | determine specific characteristics by coding for specific proteins |
| mitotic phase | where cells are actively dividing |
| proto-oncogenes | genes that code for positive cell cycle regulators |
| tumor suppressor genes | code for negative regulator proteins |
| p53 | gene that codes for a protein that plats multiple roles in the G1 checkpoint |
| binary fusion | cells replicate genomic DNA and the cytoplasmic content for two daughter cells |
| how many times are chromosome duplicated for mitosis | one |
| how many cell divisions are there in mitosis | one |
| how many cells result each time mitosis occurs | two |
| are chromosome distinctly visible during interphase | no |
| what is the term for the division of cytoplasm when two new cells are forming | cytokinesis |