science 8 chapter 10 cell reproduction
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29 terms
Terms | Definitions |
|---|---|
 All of the following are composed of body cells except (bone, kidney, liver,sperm) | sperm |
| At the end of meiosis __________ cells have been produced from one cell. | four |
| By______________, a new organism can grow from just a part of the parent organism. | regeneration |
| chromosomes | structures in the nucleus that contain hereditary material |
| DNA | coded instructions that control cell activity |
| Each human skin cell has _____ pairs of chromosomes. | 23 |
| the joining of an egg & sperm | fertilization |
| segment of DNA controlling production of one protein | gene |
| Human sex cells have _________individual chromosomes. | 23 |
| In __________, a new organism grows from the body of the parent organism | budding |
| In DNA, adenine always pairs with _________. | thymine |
| In sexual reproduction, a new organism is produced when ____________. | sex cells combine |
| Meiosis consists of ________ divisions of the nucleus | two |
| nuclear division that forms sex cells | meiosis |
| formation of two nuclei with identical chromosomes | mitosis |
| Most of the life of any cell is spent in a period of cell growth and development called____________ | interphase |
| any permanent change in genetic material of a cell | mutation |
| Proteins are made of untis called ___________, which are linked together in a specific order | amino acids |
| a nucleic acid which carries the code for making proteins from the nucleus to the ribosomes | RNA |
| reproduction in which a new organism is produced when sex cells combine | sexual reproduction |
| The code for making proteins is carried to the ribosomes by _______. | mRNA |
| The number of chromosomes in a sex cell of an organism is its __________ chromosome number | haploid |
| Type of reproduction that has eight steps in cell division? | meiosis |
| Type of reproduction that has four steps in cell division? | mitosis |
| Type of reproduction that occurs in both plants and animals? | meiosis |
| Type of reproduction that produces new cells with each having half as many chromosomes as the original cell? | meiosis |
| Type of reproduction used to make body cells? | mitosis |
| Type of reproduction used to make sex cells? | meiosis |
| cell that forms in fertilization | zygote |
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