click below
click below
Normal Size Small Size show me how
Cell Divison
| Question | Answer |
|---|---|
| List the stages of mitosis in order: | prophase, metaphase, anaphase, telophase |
| How many daughter cells are produced from one cell after mitosis? | 2 |
| Which phases of the cell cycle are represented by growth, carrying out cell function and preparing for the cell to divide. | G1 - phase where the cell grows and carries out its function G2 - phase where the cell prepares to divide |
| What happens during the S phase of interphase? | DNA copies as the cell prepares to divide |
| If there are 46 chromosomes in a human skin cell, how many chromosomes are in a human sperm cell? | 23 |
| When a chromosome copies itself, it is held together by a.....? | centromere |
| The two identical chromosomes held together by the centromere are called sister ______? | chromatids |
| In this stage of mitosis, the chromosomes line up in the middle of the cell. | metaphase |
| In this stage of mitosis, the sister chromatids can be seen and a spindle begins to form. | prophase |
| In this stage of cell division, the cytoplasm divides | cytokinesis |
| In this stage of mitosis, the sister chromatids begin to separate and move to opposite ends of the cell | anaphase |
| The period where the cell grows, copies its DNA, makes proteins | interphase |
| A highly regulated system of signals that controls normal cell divison | cell cycle |
| The X and Y chromosomes are called _____ chromosomes | sex |
| Gametes (sperm and egg) that have half the number of chromosomes are called ______________ | haploid |
| Before a cell can divide, what must happen to the DNA | must be copied (during the S phase of interphase) |
| Somatic cells (body cells) undergo ___________ (type of cell division) | mitosis |
| Sex cells (gametes) undergo _____________ (type of cell division) | meiosis |
| The longest phase of the cell cycle is | interphase |
| Why do cells need to undergo cell division? | So organisms can grow, and repair tissue |
| If a somatic cell has 20 chromosomes and undergoes cell division (mitosis), how many chromosomes will each new cell have after cell division | 20 because mitosis gives us identical daughter cells |