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MTA BIOL 1001
MIDTERM ONE PREP
| Question | Answer |
|---|---|
| The first stage of mitosis and its purpose | Prophase, where |
| The second stage of mitosis and its purpose | Prometaphase |
| The third stage of mitosis and its purpose | Metaphase |
| The fourth stage of mitosis and its purpose | Anaphase |
| The fifth stage of mitosis and its purpose | Telophase |
| First stage of cell division and its purpose | G1, where the cell checks for cell size, nutrients and energy, DNA damage, and growth factors. |
| Second stage of cell division and its purpose | S, where DNA gets replicated within the cell. |
| Third stage of cell division and its purpose | G2, where the cell checks for DNA damage and the completion of DNA replication. |
| The fourth stage of cell division and its purpose | M, where the five stages mitosis take place, as well as cytokinesis, |
| Chromatin | DNA plus its proteins (histones), the basic structure of DNA. |
| Chromosomes | Condensed chromatin, the more complex structure of DNA. |
| Chromatid | Strands of replicated chromosomes. |
| Somatic Cells | Non-reproductive cells, contain two sets of chromosomes. |
| Gametes | Reproductive cells, contain one set of chromosomes. |
| What is a diploid cell? | Cells with two sets of chromosomes (2x23 for humans). |
| What is a haploid cell? | Cells with one set of chromosomes |
| Karyotype | Visual representation of the complete set of chromosomes in a cell. |
| Homologous | Are genes in the same order, but their traits may be different. |
| What are the phases of the cell cycle? | Interphase -> Mitotic phase. |
| What happens during interphase? | It is broken down into three subphases: G1, S, G2. |
| Nucleoli | Large structure in the nucleus, the site of ribosome biogenesis. |
| Centrosomes | Organelles that organize microtubules. |
| What happens during G2 of interphase? | The nuclear envelop encloses the nucleus, two centrosomes form. |