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Science exam review
| Question | Answer |
|---|---|
| When should you wear goggles in the science lab | Using chemicals, using heat, using glassware |
| Nucleus | Controls the actions of the cell; location of genetic material: DNA |
| Cell wall | An organelle that is on the outer part of a plant cell, the animal cell does not have this organelle |
| Mitochondria | Powerhouse of the cell |
| Chloroplast | Organelle in plant cell that helps convert energy into food; it often looks like green coins |
| What instrument do we use to look at slides of a cheek cell ans an Elodea cell | Microscope |
| What are the three main components of the cell theory | 1. All organisms are composed of one or more cells 2. Cell is the basic unit of life 3. All cells come from prexisting cells |
| What are the levels of organization | Cells, tissue, organs.organ system, organism |
| What is the main function of the cell membrane | Allows things to come in and out of the cell |
| Besides chloroplast what cell structure does a plant cell have that an animal cell DOES NOT | Cell wall |
| What is the main function of the chloroplast | Make sugar through Photosynthesis |
| What is the function of an organelle | To perform a specific task in a cell |
| What are the main functions of the digestive system | Mouth, Esophagus, Stomach, Large intestine, Small intestine |
| What are some examples of organs in the human body | Heart, Skin, Lungs, Brain, Kidney |
| What are some examples of an external stimuls | Echo location and seasonal changes |
| What is the function of the vacuole | Store food, water, and waste |
| What is the function and structure of cytoplasm | Holds organelles in place and it's a jelly like substance |
| What is a response by your body getting an infection | Increased tempeature |
| Homeostasis | The ability of an organism to maintain a stable envoirment |
| What two body systems work together to get more O2 to a runner's muscles | Respitory and Circulatory |
| What is a likely response to food poisoning | Vomiting |
| How do skeletal muscles work | In pairs |
| When you chew up a cracker what type of digestion is it | Mechanical digestion |
| What is the main function of the reproductive system | The continuation of the human species |
| What is the main function of the excretory system | To rid the body of liquid waste |
| Stimulas | A change in an organisms environment that causes an response |
| What is the purpose of the nervous system | Controls actions and reactions |
| What body system to hormones belong to | Endocrine system |
| What two body systems help you move | Skeletal and Muscular |
| What two body systems help you breathe | Respitory and Muscualr |
| Which body systems produce and distribute hormones on the body | Endocrine and Circulatory |
| Hydrotropism | When a plant moves towards water |
| Phototropism | When a plant moves towards the sun |
| Thingmatropism | When a plant responds to touch |
| What is the main function of the integumentary system | Protection of the body |
| Vegetive propagation | Growing anew plant from a piece of a plant |
| Heredity | The passing of traits fron one generation to the next |
| What must astronauts do offset the effects of a low gravity space environment | Excercise daily |
| What parts of the space suit keeps an astronaut alive | Oxygen system |
| Binary fission | Becoming two by the division of the complete organism |
| Regeneration | The ability to restore lost or damaged tissues or organs |
| What effects do microgravity have on the body | 1. bone loss 2. muscle loss 3. low blood volume |
| Where are genes lovated within the cell | On the DNA |
| Budding | Process by which a new duplicate organism begins to form at the side of the parent and enlarges until an indivisual is created |
| Genetics | The study of Hereidty |
| Who is the botanist that studied pea plants and what specific parts did he study | Gregor Mandal he studied...... 1. height of the plant 2. color of the plant 3. color of the seed |
| How are chromosomes and genes related | Genes are within the DNA and DNA makes up chromosomes |
| Trait | Qualities that are passed from one generation to the next |
| What protects an astronaut from cosmic rays | Space suit |
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