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Science Exam
| Question | Answer |
|---|---|
| What are the 3 differences between the plant cells and animal cells? | Chloroplast,the vacuole and the cell wall. |
| What does the nucleus do? | It is the control center of the cell and it holds the cells DNA |
| what are the 5 phases of mitosis? | prophase,metaphase, anaphase, telophase and interphase. |
| What is significant about Prophase? | Double stranded chromosomes can be seen with a microscope and spindle fibres begin to form. |
| what is the famle and male flower reproductive organ? | Female-Pistil Male-Stamen |
| What does the lysosomes do? | The Lysosomes digest the food in the cell. |
| What is another word for Static Electricity | Electrostatics |
| What are the properties of a gamma ray? | No mass, no charge and its made of energy |
| what are the properties of an alpha ray? | Four times the mass of one proton, two times the charge and its made of matter and it has a positive charge? |
| What are the properties of a beta Particles. | Same mass as an electron, same charge and its made of energy. |
| What are three ways to charge an item? | Contact friction and induction? |
| What is the nickname for lysosomes? | Suicide Sacks |
| How many electrones are on the second ring of the Bohr Rutherford model? | Eight |
| Why is static electricity more of a problem in winter then in summer. | The air is drier and more build up in electrons on different types of meterials. |
| What is the function of pollination? | For the purpose of reproduction in flowers. |
| What is the difference between gymnosperms and angiosperms? | Angiosperm is a flowering plant while gymnosperm seeds are inside cones. |
| What is the haploid and diploid number of a human? | Haploid 23 Diploid 46 |
| What is Binary fission? | A type of sexual reproduction, it does not contain a true nucleus. |
| what animals does binary fission occur in? | bacteria |
| What are two points of the cell theory? | All living organisims are composed of one or more cells All cells come from prervious existing cells. |
| What are three types of asexual reproductionin a fungus? | spore formation, budding and fragmentation. |
| whats the significants about Anaphase? | The spindle fibres begin to contract and shorten allowing the chromosomes to break apartand moving to either ends of the cell. |
| Whats the significanse about Telophase | Final stage of mitosis,A nuclear membran forms around each set of chromosomes and the spindle fibres begin to disappear |
| Whats the significanse about Meta Phase | When the tugging action of the spindle fibres pull the chromosomes into a straight line across the cell. |
| Whats the significanse about Interphase | (where the cell spends 10hrs of its life) The cells grows, replicates its DNA and gets prepared for the first step of mitosis. |
| What is fragmentation | When a small fragment breaks away from another plant and sprouts onto another plant or in the ground |
| What is Budding | Once a nucleus forms first then a small bud begins to form on the cell wall. That bud containing the nucleus grows larger and larger and larger until a plant forms. |
| What is Spore Formation | A reproductive cell that forms through mitosis |
Created by:
mcintyre
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