Chapter 9 - Mitosis and Meiosis, book questions and notes
Help!
|
|
||||
|---|---|---|---|---|---|
| DNA is organized into | informational units called genes.
🗑
|
||||
| DNA is packaged in a highly | organized way in chromosomes.
🗑
|
||||
| Chromosome number and informational content | differ among species.
🗑
|
||||
| Chromosomes duplicate | during interphase.
🗑
|
||||
| The cell cycle is made up of: | interphase and M phase
🗑
|
||||
| Interphase is made up of: | G1 phase + S phase + G2 phase
🗑
|
||||
| M phase is made up of: | mitosis and cytokinesis
🗑
|
||||
| During prophase, duplicated chromosomes become | visible with the microscope.
🗑
|
||||
| Interphase and the stages of mitosis: | 1. Interphase 2. Prophase 3. Prometaphase 4. Metaphase 5. Anaphase 6. Telophase
🗑
|
||||
| Duplicated chromosomes line up on | the midplane during metaphase.
🗑
|
||||
| During anaphase, chromosomes move | toward the poles.
🗑
|
||||
| During telophase, how many separate nuclei form? | 2
🗑
|
||||
| What does cytokinesis form? | 2 separate daughter cells
🗑
|
||||
| Mitosis produces two cells genetically | identical to the parent cell.
🗑
|
||||
| An internal genetic program interacting with external signals regulates | the cell cycle.
🗑
|
||||
| Meiosis produces haploid cells with | unique gene combinations.
🗑
|
||||
| Prophase 1 includes | synapsis and crossing-over.
🗑
|
||||
| During meiosis 1, what separates? | Homologous chromosomes
🗑
|
||||
| What separates in meiosis II? | Chromatids
🗑
|
||||
| Mitosis and meiosis lead to | contrasting outcomes.
🗑
|
||||
| The timing of meiosis in the life cycle | varies among species.
🗑
|
||||
| Which phase is this? Chromatin (DNA) condenses, centrioles move to opposite ends of cell, nucleolus and nuclear membrane disappears. | Prophase
🗑
|
||||
| Which phase is this? The proteins attach to centromeres, microtubules attach at kinetochores, chromosomes begin moving. | Prometaphase
🗑
|
||||
| Which phase is this? Spindle fibers align chromosomes along middle of cell which helps them separate properly. | Metaphase
🗑
|
||||
| Which phase is this? Sister chromatids separate at kinetochores and move to opposite poles, poles move farther apart. | Anaphase
🗑
|
||||
| Which phase is this? Chromosomes arrive at opposite poles, spindle fibers disperse, cytokinesis begins | Telophase
🗑
|
||||
| What are the 3 major checkpoints? | 1. G1 - can DNA synthesis begin 2. G2 - has DNA synthesis been completed correctly 3. M phases - spindle checkpoint, can sister chromatids separate correctly
🗑
|
||||
| To stimulate growth, protein signals released by body cells | stimulate other cells to divide.
🗑
|
||||
| Crowded cells stop dividing, mass of cells use up growth factors | Density-dependent inhibition
🗑
|
||||
| In order to divide, cells must be attached to a substrate | Anchorage dependence
🗑
|
||||
| Proteins that help in chromosome packaging. | Histones
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
crescenti
Popular Biology sets