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biology final exam
| Question | Answer |
|---|---|
| cell theory | 1.All living things are made of one or more cells 2.Cells are the basic units of structure and functio n in living things 3. All cells come from other cells |
| mitosis | is cell reproduction in which two identical cells are made from one cell |
| mitosis | living things grow and repair themselves in a process of cell reproduction called mitosis |
| mitosis | before mitosis begins,chromosomes become doubled and form sister chromatids. each chromatid is an exact copy of the original chromosome. |
| mitosis | during mitosis, two identical cells form from one original cell. mitosis takes place in four steps. it results in two new body cells, each with the same number of chromosomes as in the original cell. |
| meiosis | a kind of cell reproduction that forms eggs and sperm |
| meiosis | sex cells form through a process called meiosis |
| meiosis | meiosis involves two cell divisions. it results in four sex cells, each with half the number of chromosomes as the original cell |
| meiosis | in human males, four sperm result in meiosis. in females, only one egg results from meiosis. Egg and sperm join together as fertilization. each supplies half the new cells's chromosomes. The new organism develops by mitosis. |
| Asexual reproduction | 1. asexual reproduction does not require sex cells, mating, or sex organs. It does use mitosis. 2. Budding and regeneration are two types of asexual reproduction |
| sexual reproduction | 1. Sexual reproduction uses mating and egg and sperm that are formed during meiosis. 2. in external fertilization, egg and sperm join outside the bodies of the parents. In internal fertilization,egg and sperm join inside the body of the female. |
| sexual reproduction | 3. having breeding seasons or an estrous cycle increases the chance of fertilization |
| chromosomes number | 1. each human sperm or egg has 23 chromosomes 2.each human body cell has 23 pairs of chromosomes.there are 46 chromosome in each human body cell. |
| chromosomes number | 1. X chromosomes in a sex chromosome of the female 2. Y chromosomes in a sex chromosome found only in males 3. Human males hav eone X and one Y chromosomes |
| adaptation | a trait that make a living thing able to survive its surrondings |
| natural selection | a process in which something in living things surrondings determines if it will or will not survive to have offspring |
| mutations | any change in copying the DNA message |
| classification group | 1. kingdom 2. phylum 3. class 4. order 5. family 6. genus 7. species |
| what is needed to form a hypothesis | 1. question 2. obsevation 3. research 4. form prediction 5. test prediction 6. experiement |
| hypothesis | a scientific answer to something |
| equation for photosynthesis | 6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O |
| equation for cellular respiration | C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy (34-36 ATP + heat) |
Created by:
ldagsosu
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