Term
| You have to know the cell cycle(1), what happens in those stages(2), and the proper order of those stages(3). |
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Definition
1. The cell cycle is the events leading up to a cells division and duplication.
2. G1 (growth). S-Phase (Synthesis). G2 (growth). M-PHASE(MITOSIS: PROPHASE->METAPHASE->ANAPHASE->TELOPHASE) |
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Term
| When in the cell cycle does DNA replicate(1)? How does DNA replication happen(2)? Which enzyme does most of the work(3)? What does "semi conservative" replication mean(4)? |
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Definition
1. DNA is replicated in S-PHASE.
2. DNA replications works by taking a double helix, unwinding it, making a copy of the other side using DNA polymerase, make 2 half-and-hald double helixes.
3. RNA polymerase does most of the work.
4. "Semi-conservative" replication is how the new double helix is half old and half new. |
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Term
| What are the stages of mitosis(1)? What happens in those stages(2)? What order do the stages occur in(3)? |
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Definition
1. Prophase, Metaphase, Anaphase, Telophase.
2. Prophase (chromoses become visible and pair up). Metaphase (chromosomes attach to and pull on the mitotic spindle). Anaphase (seperate sister chromatids). Telophase (ells begin to divide).
3. PROPHASE->METAPHASE->ANAPHASE->TELOPHASE |
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Term
| You need to be able to identify mitosis stages by looking at pictures/diagrams AND label a diagram of a cell. |
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Definition
| well, I cant put pictures in here, but it's on your quizzes. |
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Term
| What type of cells undergo mitosis(1)? What is the point of mitosis(2)? |
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Definition
1. Old and/or damaged cells undergo mitosis.
2. The point of mitosis is to reproduce cells for growth, reproduction, or replacement. |
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Term
| What causes caner mutations(1)? Where do cancer mutations occur(2)? What are the effects of cancer(3)? |
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Definition
1. Uncontrolled reproduction of cells causes cancer.
2. Cancer mutations take place in any cell in the body.
3. The effects of cancer are tumors and sometimes death. |
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Term
| You have to be able to identify and line up MEIOSIS stages. |
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Definition
| Sorry, I an't show you this one either. |
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Term
| No egg or sperm is exactly alike. Describe 2 reasons why. |
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Definition
1. No two people are exactly alike.
2. There are multiple possible combinations of chromosomes. |
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Term
| How is spermatogenesis different from oogenesis(2)? Where do spermatogenesis and oogenesis occur in the human body(2)? |
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Definition
1. Spermatogenesis occurs very often while oogenesis occurs once a month.
2. Spermatogenesis occurs in the testis and oogenesis ocurs in the ovaries. |
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Term
| What is nondisjunction(1)? Can you give an example of a genetic disorder caused by non-disjunction(2)? |
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Definition
1. Nondisjunction is an error in meiosis when a tetrad fails to split.
2. An example of a genetic disordser caused by non-disjunction would be Trisomy 13 Syndrome (AKA Patau Syndrome. That is when you have a human cyclops. |
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Term
| How many chromosomes do humans have? |
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Definition
| Humans have 46 chromosomes (23 pairs) |
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Term
| What happens during fertilization? |
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Definition
| A mature egg and a mature sperm collide and form a new fertilized egg called a zygote. |
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