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Study
Natural Science Unit 1: Cells
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Give an example of a multicellular organism
trees, butterflies...
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what does the nucleus do?
controls everything that happens in the cell
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name 2 examples of non-seed plants
ferns, mosses
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What enters the leaf during photosynthesis? What is expelled?
enters: CO2 and sunlight; expelled: oxygen
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what is the cytoplasm?
a thick, clear, liquid that is made of salts and water
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What is the shape of nerve cells?
star-shaped
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what do plants need for photosynthesis?
sunlight, water, mineral salts, and carbon dioxide
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which systems do animals use for INTERACTION?
locomotor and nervous system
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What's an example of a plant system?
Vascular system
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What do red blood cells do?
Carry oxygen from the lungs, to the muscles, to the organs
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How do plants interact?
roots grow towards water, sunflowers move with the sunlight
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Which organelles/cell parts CAN'T be found in an animal cell? (there are 2!)
cell wall, chloroplasts
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What does unicellular mean?
organism with only one cell
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What are the small holes in leaves called?
stomata
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how do cells reproduce?
they divide
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What does viviparous mean?
animals that reproduce by growing their young inside the mother's body
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True or False: Plant cells have cytoplasm and vacuoles
true
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What process happens when male and female reproductive cells join?
fertilisation
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What substance is inside of chloroplasts?
Chlorophyll
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What shape are plant cells?
rectangular or polygonal
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Whats an example of a plant organ?
leaf
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What does elaborated sap contain?
nutrients for the palnt
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What's an example of a unicellular organism?
Bacteria, yeast
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What systems do animals use for nutrition? (Name 2)
digestive system, respiratory system, excretory system
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Where does photosynthesis take place in a plant?
the leaves
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What does oviviviparous mean?
animals reproduce with eggs that hatch inside the mother's body
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Put these in order from smallest to largest: tissue, cells, systems, organs
cells, tissue, organs, systems
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What are the basic life processes?
interaction, nutrition, reproduction
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What are the two types of seed pants?
flower/fruit plants and cone plants
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what does the membrane do?
surrounds the cell, controls what goes in and out of cell
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what do nerve cells do?
Transmit nerve impulses from the brain to different parts of the body
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what is the function of root hairs?
increase the area of the root that is in contact with the soil
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Give an example of a system in humans, and what it does
...
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what does oviparous mean?
animals that reproduce by laying eggs
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