01-CP3 Cell
01-CP3 Cell
01-CP3 Cell
1) Which are the main bioelements? What is the basic chemical element in Biology?
4) Write a table with the different Levels of organization of life and give an example at each level.
LEVELS OF EXAMPLES
ORGANIZATION
Subatomic
Atomic
Molecule
Cell
Tissue
Organ
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UNIT 1 –BASIS OF LIFE 3 E.S.O.
8) What is a tissue?
9) Define:
OSMOSIS-
DIFUSSION-
10) Classify the following under the headings 'Cell structure', 'Tissue', 'Organ' or System'.
bone, nucleus, skeleton, brain, nerve, mitochondrion, muscle, cytoplasm, epithelium, heart and
blood vessels, stomach, alimentary canal, lung, lungs and windpipe
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UNIT 1 –BASIS OF LIFE 3 E.S.O.
IGCSE QUESTIONS
Boiling potatoes destroys their cell membranes. A peeled, boiled potato strip is placed in a
concentrated solution of salts.
A red blood cell is placed in a concentrated sugar solution. What happens and why?
A The cell bursts as sugar molecules diffuse into it.
B The cell bursts because the concentrated sugar solution enters it.
C The cell shrinks because sugar molecules leave it.
D The cell shrinks because water leaves it.
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UNIT 1 –BASIS OF LIFE 3 E.S.O.
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UNIT 1 –BASIS OF LIFE 3 E.S.O.
At the beginning the potato cylinders were exactly balanced. He immersed the cylinders
into the liquids for 4 hours, after which the cylinders were lifted out of the liquids.
Cylinder P was now heavier than cylinder Q.
Which structure is found in a palisade cell that is not present in this liver cell?
A cell membrane
B chloroplast
C cytoplasm
D nucleus
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UNIT 1 –BASIS OF LIFE 3 E.S.O.
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UNIT 1 –BASIS OF LIFE 3 E.S.O.