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science (cells)3-1
science (cells)3-1 grade 6
| Question | Answer |
|---|---|
| what are all living things made up of? | CELLS |
| cells- | the basic unit of life |
| in what year did the bubonic plaque go around? X | in the year 1328,killed millions X |
| what was the bubonic plaque caused by? X | bacteria X |
| in what year did the potato famine happen X | in the year 1845, 100,000 people died of hunger X |
| how come people did not know about bacteria? | the organism was microscopic and people did not have as much technology |
| who discovered cells? | robert hooke a british scientist |
| what did robert hooke make? | a homemade microscope |
| why did robert hookie name cells "cells"? | he named them cells because "cells" in Latin mean "little rooms" |
| what did robert hooke see inside of the cells? | he saw inside the "little rooms" there was jucie inisde called cytoplasm |
| who was anton van Leeuwenhoek. ? | he was a dutch merchant who created the microscope |
| who was the first person to see blood cells? | Anton van Leeuwenhoek |
| what was Anton Leeuwenhoek famous for discovering? | pond micro-organisms he called animalcules now called protists |
| who discovered the cell theroy? | Matthias Schleiden & Theodore Schwann and Virchow |
| what is the cell theory? | all organisms have one or more cells, cells are the basic unit of life, all cells come from re existing cells |
| what part did rudolf Virchow add to the cell theory? | (3) all cells come from other cells |
| do animals have cell walls? | no |
| do plants and fungi have cell walls? | yes |
| what did anton look at? | animal blood |
| what did Anton Leeuwenhoek notice about animal blood? | he noticed that animal blood differs from animal to animal |
| who was the first person to see bacteria? | Anton Leeuwenhoek from his teeth |
| what did Anton Leeuwenhoek discover about yeast? X | he discovered that yeast that makes bread are single-celled X |
| Who was Schwann | he studied animals and concluded that all animal tissues have cells |
| why cant you see cells with a naked eye? | cells are microscopic |
| why is an egg yolk able to be such a large cell? | because it does not need to take in nutrients |
| what happens when the cell gets bigger? | when the cell gets bigger the more food it needs and gets rid of more waste |
| why are cells small? | they are limited by their surface are to volume ratio -they take in food then gets rid of the waste so the cell stays small |
| when cells volume increases | surface area grows |
| what happens when cells get too much bigger- | they cant take in as much food this is due to surface area to volume ratios |
| what are three things hooke looked at? | house fly eyes,feathers,fish scales |
| hooke determined that plants have cells but not animals why is this? | animals dont have cell walls so they hard to see |
| what did anton see swimming around in the pond water ? | Protists -he named these creaters animalcules |
| what does animalcules mean? | little animals |
| what do we can animalcules today? | protists |
| what 3 things did anton look at? | animal blood,bacteria,yeast |
| what are all cells surrounded by? | cell membrane |
| what is a cell membrane? | a protective layer that covers the cell(acts like a barrier) |
| what does the cell membrane do? | it seperates the cell from the enviernment |
| what does the cell membrane control? | it controls what goes in and out of the cell |
| what is cytoplasm? | it is a clear fluid inside evrery cell |
| organelles- | are structures that perform specific functions within the cell |
| do different cells have different organelles true or false? | true |
| where are organelles located | they float in the cytoplasm or are attached to membranes inside the cell |
| DNA= | genetic material that all cell have which carries info to make new cells and organisms |
| where is the DNA in a eukaryotic cell- | in the nucleus |
| eukaryotic cells have______. | nucleus |
| do red blood cells have DNA? X | no they lose their DNA when they mature X |
| what are the two kinds of cells? | prokaryotic and eukaryotic |
| what 4 things do all cells have | DNA (genetic material),organelles,cytoplasm and cell membrane |
| what is the most Common prokaryote? | bacteria |
| bacteria- | is the smallest cell known |
| where does bacteria live | almost everywhere |
| what are ribosomes- | tiny round organelles made up of protein and other material |
| how does the cell wall help the bacteria? | it helps mantain shape and protect the cell |
| what are some example of where bacteria lives? | soil, water, in or on organisms, skin, teeth, digestive system |
| what are the three types of archaea | heat loving, salt loving, methane making |
| What is the biggest difference between archaea and bacteria? | where they live. |
| two types of cells | prokaryotic and Eukaryotic |
| two types of Prokaryotic cells | archaea and bacteria |
| four types of Eukaryotic cells | animal, plant, fungi, protist |
| Is Archaea single celled? | yes |
| does archaea have ribosomes? | yes |
| true or false: archaea has a nucleus | false |
| what are the three types of archaea bacteria? | salt loving, methane making & heat loving |
| true or false: are prokaryotic cells single-cellular | true |
| do prokaryotic cells have nucleus ? | no they do not have nucleus |
| prokaryotic cells- | don't have a membrane bound organelles, but have DNA |
| what are 2 things that prokaryotic cells and eukaryotic cells both have? | -they both have DNA and one or more cells |
| are eukaryotic cells multi -cellular? true or false: | true |
| eukaryotic cells- | have nucleus, have membrane and has DNA |
| what is the smallest unit that can perform all the processes necessary for life is a | cell |
| what kind of cells have cell walls? | everything but animals. for example, plants ,fungi & prokaryotic |
| why can a chicken egg grow so large? | it does not take in nutrients |
| what limits cells to a very small size? | the surface area-to-volume ratio of the cell |
| how could you calculate the surface area-to-volume ratio? | divide the total surface area of the cell by the cells volume |
| what parts do all cells have? | DNA , organelles, cytoplasm and cell membrane |
| what are prokaryotes ? | they are organisms that consist of single cell that does not have a nucleus or membrane bond organelles |
| what is 1 difference between archaea and bacteria? | where they are found in different places |
| how do eukaryotes compare in size to prokaryotes? | eukaryotes are about 10 times larger |
| what does eukaryotes have that prokaryotes do not have? | cells with a nucleus |
| which of these words describes humans? | a)eukaryote b)prokaryote c)protest d)fungus the correct answer A) |
| what does multi-cellular mean | many cells |
Created by:
brooke2426
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