cellas a unit of life
TRANSCRIPT
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cienceform1
2012
Cellasaunitoflife
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2.1 what is cell?
Cell?
The _______________ unit that makes up living things and can carry out all
____________________________.
Cells are very ______________________ and can only e seen with the help o! a
__________________________.
"hat is inside the cell?
Cell memrane Cytoplasm #ucleus
$ place !or storing !ood andwaste materials and the place
where chemical reactions take
occur
Controls all activities o! the
cell
Controls the movement o!
sustances into or out o! the
cell
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$nimal cell
#&
'& #&
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'& #&
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Cell memrane )acuole #ucleus
Cytoplasm Chloroplast Cell wall
Controls the movement o!
sustances into or out o!
the cell
Supports and gives shape
to the cell
Controls all activities o! the
cell
Stored salt solution and
sugar solution
Stores !ood and waste
materials and the place
where chemical reactions
take place
Carries out photosynthesis
*#+C,--*-$ $#/ 0*-T+C,--*-$ $#+S0
rganism can e divided to&
whd%kt*nicellular organism 0ulticellular organism
3lant cell
#&
'&
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C,-- $#+S$T+# +# T5, 5*0$# 6/7
T73, $#/ '*#CT+# ' T5, C,--
,ach cell is di!!erent in si8e9 ________________ and _________________ and
it per!orm its particular _________________.
)arious type o! cell and its !unction are as !ollow&
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Simple organism that
consists o! ___________
only.
$re also known as unicellular
microorganism as they are
_______________9
_________________
organism.
$ll li!e ______________
takes place within the cell.
,:ample o! unicellular
organism&
$nimal &
_____________________
3lant
&______________________
_
0ost o! the unicellular
organisms live in wet places
such as ponds9 lakes9
_________ and ________.
rganism that consists o!
___________ than one cell.
6igger in si8e compared to
_______________________ as
they are made up o! great
numer o! cells.
$ variety o! cells are
__________ to carry out
speci!ic li!e ________________
such as
_____________________9______________________9
________________________.
The li!e processes o!
multicellular organism are more
____________ than the
unicellular organism.
,:ample o! multicellular
organism&
$nimal &
_____________________
3lant
&_______________________
5uman eing is a good
e:ample o!
_________________________.
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Type of cell Function
+t looks like a microscopic tadpole which has
_________9 ody and ____________.
+t is the male gamete o! the male reproductive
system.
+t contains ______________ in!ormation !rom the
!ather to !ertili8e an egg.
+t is a dimpled disc
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organ.
6one cell 'ound in onds
+t holds and _____________ system o! our ody.
"hite lood cell +t ______________ acteria and germs
0uscle cell $llow the ___________________ o! the ody
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T+SS*, -,),-
$ group o! cell o! the same shape and ________________ that are per!orming
one particular _________________ is called a tissue.
Tissue contains similar cells which have e:perienced growth9 adaptation9
changes in their !eatures to carry out _________________ !unction.
The human ody consists o! !our main types o! tissue&
Major tissue group Function Example / location
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,pithelial tissue
Cover the ____________
and lines sur!aces o!
_____________
6lood vessel9 skin and
the lining o! the digestive
tract.
#erve tissue
esponds to
_____________ and
transmits
______________
6rain and ____________
cord
Connective tissue
Connects various sets o!
________________ and
provides ___________
Contain plenty o!
_____________
6lood9 one9 !at cells9
tendons9 ligament
0uscle tissue
Causes movement y
___________________
made up o! the muscle
cell that work with the
__________ to movedi!!erent part o! the ody
5eart9 wall o! digestive
tract9 skeletal muscle.
$# -,),-
$ !ew di!!erent type o! _______________ group together to !orm an
_______________. $n organ per!orms speci!ic _______________.
$n organ is responsile to per!orm one or more odily ___________________.
,:ample &
@internal organA < rain9 heart9 lung9 kidney
@sense organA B eyes9 ears9 nose9 skin and tounge
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$ll the cells in the organ are connected to _______________ vessels which supply
_______________ and ___________________.
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$ group o! __________________ which work together to per!orm a speci!ic !unction
!orms a ________________.
The ody system carries out more ___________________ processes.
/i!!erent ody system enale the human to per!orm __________ processes more
________________.
The main ody system are as !ollows&
System Remarks
espiratory system rgans &
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To
_____________
parts o! the ody
To detects
_________
____
/etects
_________
_
Carries out
_________
e:change
3umps
___________ to
all part o! the
ody
_____________
!ood sustances
egulates
____________
_ temperature
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#ose9 trachea9 lung9 diaphragm
'unction&
Supplies ody with
________________
emoves ____________________
!rom the ody
,:cretory system rgans&
Eidney9 skin9 urinary ladder
'unction&
emove to:ic ____________ and
e:cretory products such as
___________9 mineral salts9 water9
and caron dio:ide.
6lood circulatory system rgans&
5eart9 lood vessel
'unction&
6rings ______________ and o:ygen
to cells
emoves dissolves ______________
!rom the cells
#ervous system rgan&
6rain9 spinal cord9 nerves
'unction&
eceives e:ternal _____________
and coordinates ______________
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eproductive system rgan&
'emale reproductive system& !allopian
tue9 ovary9 uterus
0ale reproductive system & testis9 penis
'unction& 3roduces ___________________
,nsures continuation o!
______________
/igestive system rgan&
0outh9 oesophagus9 stomach9
pancrease9 liver9 large intestine9 small
intestine.
'unction&
_______________ di!!erent classes o!
!ood into simple sustances that can e
easily ______________ y the ody.
0uscular system rgan&
0uscle
'unction&
Controls ody __________________
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Skeletal system rgan&
Skull 9 one
'unction&
3rovides ____________ and protects
internal __________________
,ndocrine system rgan&
6rain9 pituitary gland9 thyroid gland9
adrenal gland9 pancrease9 testis9 ovary
'unction&
Coordinates and controls odyGs
!unctions such as ______________9
se:ual maturation and level o!_____________ in lood.
$#+S0 -,),-
$ll _________________ in the ody work together to produce an independent
_________________.
The systems cooperate with one another so that the human ody
__________________ as a whole.
5umans are di!!erent !rom other organism ecause the comple:ity o! their
______________. +t is uniHue and enales them to ___________________ and
analyse things.
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_____________
__
_____________
__
_____________
__
_____________
__
_____________
__
_____________
__
_____________
__
_____________
__
CE
T!SS"E
#R$%&
S'STEM
#R$%&!S
M
)arious cells @lood
cell9 one cellA
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S,CT+# $
1. /iagram 1 shows two types o! cells.
/iagram 1
"hich o! the !ollowing comparisons is
true?
0 #
$. 0ai8e cell 6alsam cell
6. Chicken cell 0ai8e cell
C. Chicken cell ,arthworm cell/. 0ushroom cell Chicken cell
2. /iagram 2 shows the cell organisation.
/iagram 2
"hich o! the !ollowing is an e:ample o!
stage "?
$. Sperm
6. 0outh
C. 0uscle
/. 6lood plasma
(. "hich o! the !ollowing cell does not have
nucleus?
$. Cheek cell
6. 0uscle cell
C. ed lood cell
/. "hite lood cell
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4. /iagram ( shows the structure o! cell.
/iagram (
+n which organism can this type o! cell e !ound?
$. 0ouse
6. rchid
C. rasshopper
/. Sparrow
;. /iagram 4 shows the seHuence o! cell
organi8ation in humans.
/iagram 4
"hich pair o! organ 3 and system J is
matched correctly?
rgan 3 System J
$. ,ye #ervous
6. -ung espiratory
C. -iver Skeletal/. Eidney /igestive
=. "hich o! the !ollowing statements is true
aout multicellular organism?
$. 3addy plant is a multicellular organism
6. $ll plants are multicellular organisms
C. $ll animals are multicellular organisms
/. $ll multicellular organism live on land
>. /iagram ; shows a type o! tissues in the
human ody.
/iagram ;
The tissue is
$. #erve tissue
6. 0uscle tissue
C. ,pithelial tissue
/. Connective tissue
. "hich o! the !ollowing is unicellular
organism?
$.
6.
C.
/.
D. /iagram = shows an organism.
/iagram =
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"hich o! the !ollowing organisms is classi!ied in
the same group as organism in /iagram =?
$.
6.
C.
/.
1F. The !ollowing are steps !or preparing a slide
o! an onion cell.
3 B peel the inner epidermal layer o! the
onion
J B asor e:cess iodine
B add one drop o! iodine solution
S B place the specimen in the middle o! a
clean slide
T B cover the onion cells with a cover slip
"hich o! the !ollowing seHuences is correct
to prepare an onion slide?$. 39 S9 9 J9 T
6. S9 39 9 J9 T
C. 39 S9 9 T9 J
/. S9 39 T9 9 J
11. "hy humans are considered a comple:
organism?
+. 5uman have many speciali8ed cells
++. 5uman have a ody system
+++. 5uman ody cells are organi8ed into
tissues9 organs and systems
$. + only6. + and ++ only
C. ++ and +++ only
/. +9 ++ and +++
12. /iagram > shows a plant cell. "hich o! the
structures $9 69 C or / controls the activity o!
the plant cell?
/iagram >
1(. "hich o! the !ollowing microorganisms is
multicellular?
$.
6.
C.
/.
14. /iagram shows a plant cell.
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/iagram
"hat is 7?
$. #ucleus
6. Cytoplasm
C. Chloroplast
/. Cell memrane
1;. /iagram D shows the organs in the human
ody system.
/iagram DThe system is
$. /igestive system
6. ,:cretory system
C. espiratory system
/. eproductive system
1=. ,ach cell that !orms muscle tissues has the
same
+. Structure
++. 'unction
+++. Shape
$. + only
6. + and ++ only
C. ++ and +++ only
/. +9 ++ and +++
1>. The purpose o! staining cells with iodine
solution e!ore oserving them under a
microscope is
$. To kill the cells
6. To see the cells clearly
C. To stimulate the cells to move/. To increase the si8e o! the cells
1. /iagram 1F shows a sample o! an onion
cell.
/iagram 1F
"hich structures9 $9 69 C or / gives support
and maintains the shape o! the cell?
1D. /iagram 11 shows an organism.
/iagram 11
"hich o! the !ollowing is true aout the
organism?
$. +t reproduces y !orming spores
6. +t is unicellular organism
C. +t is a multicellular organism
/. +t makes its own !ood
2F. /iagram 12 shows a type o! cell in the
human ody.
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/iagram 12
+t is called
$. $ nerve cell
6. $ muscle cell
C. $n epithelial cell
/. $ sperm cell
SECT!#& (
1. /iagram 1 shows a plant cell.
/iagram 1.1
aA -ael 3 and J using the !ollowing words.
Cell
memrane
#ucleus )acuole
K2 marksL
A Structure help in the process o!
photosynthesis. -ael in /iagram 1.1
K1 markL
cA /iagram 1.2 shows a cell.
/iagram 1.2
State two di!!erences o! characteristic
etween /iagram 1.1 and /iagram 1.2.
/i!!erences /iagram
1.1
/iagram
1.2
1.
2.
K2 marksL
;
2. /iagram 2 shows !our types o!
microorganisms.
/iagram 2
aA 6ased on your oservations in /iagram
29 state one characteristic !or each o!these microorganisms.
iA Spirogyra &
________________________
iiA $moea &
_________________________
iiiA 5ydra &
___________________________
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ivA ,uglena &
_________________________
K4 marksL
A Classi!y the microorganisms in
/iagram 2 into two groups ased on their
common characteristics.
K4 marksL
(. /iagram (.1 shows cells 0 and #.
/iagram (.1
aA #ame cells 0 and # in the space
provided in /iagram (.1.
K2 marksL
A 3 is where photosynthesis takes place.
-ael 3 in /iagram (.1.
K1 markL
cA /raw lines to match the structures o! the
cell and their !unctions. /raw lines as
shown elow.
K2 marksL
dA #ame one similar structure that can e
!ound in oth cells 0 and #.
_________________________________
___
K1 markL
=
4. /iagram 4 shows three organisms.
/iagram 4
aA "hat is meant y the word
MmicroorganismG?
_________________________________
___
K1 markL
A 6ased on diagram 49 which organisms is
a unicellular plant?
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_________________________________
___
K1 markL
cA "hat is the !unction o! I?
_________________________________
___K1 markL
dA ive two similarities etween
paramecium and chlamydomonas.
i.________________________________
___
ii._______________________________
____
K2 marksL
eA State the haitat o! the organisms aove.
_________________________________
___
K1 markL
=
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