2. •What is aWhat is a
unicellularunicellular
organism andorganism and
give twogive two
examples?examples?
3. • An organism whichAn organism which
consists of one cellconsists of one cell
only.only.
• PleurococcusPleurococcus
• BacteriaBacteria
• ParameciumParamecium
• AmoebaAmoeba
• EuglenaEuglena
8. •How are cheekHow are cheek
epithelial cellsepithelial cells
suited to theirsuited to their
function?function?
9. • They have a flatThey have a flat
irregular shape whichirregular shape which
forms a loose layerforms a loose layer
which is easilywhich is easily
replaced during wearreplaced during wear
and tear, thusand tear, thus
protecting the mouthprotecting the mouth
lininglining
11. •What are the rolesWhat are the roles
of the roughof the rough
endoplasmicendoplasmic
reticulum and thereticulum and the
smooth endoplasmicsmooth endoplasmic
reticulum?reticulum?
12. •Rough = SynthesisRough = Synthesis
and transport ofand transport of
proteins for exportproteins for export
•Smooth = SynthesisSmooth = Synthesis
and transport ofand transport of
lipidslipids
17. ●● What two typesWhat two types
of cell are presentof cell are present
in the humanin the human
windpipe andwindpipe and
Explain how theseExplain how these
cells are suited tocells are suited to
their functiontheir function
18. • Ciliated columnarCiliated columnar
epithelial cell = Cilia beatepithelial cell = Cilia beat
upwards to sweep mucusupwards to sweep mucus
away from lungsaway from lungs
• Goblet cell = ProducesGoblet cell = Produces
mucus to trap germs andmucus to trap germs and
dirtdirt
20. •What is the cellWhat is the cell
wall composed of,wall composed of,
and how does itsand how does its
structure suit itsstructure suit its
function?function?
21. •Cellulose= TheCellulose= The
fibrous arrangementfibrous arrangement
makes the cell wallmakes the cell wall
strong but alsostrong but also
slightly elasticslightly elastic
23. •State the twoState the two
functions of xylemfunctions of xylem
tissue and explaintissue and explain
how the two cellhow the two cell
types are suited totypes are suited to
these functionsthese functions
24. • Water Transport and SupportWater Transport and Support
• Vessel = Hollow tube to allowVessel = Hollow tube to allow
transport and strengthenedtransport and strengthened
with lignin for supportwith lignin for support
• Tracheid = Lignified walls forTracheid = Lignified walls for
supportsupport
38. •What doesWhat does
hydrophilic meanhydrophilic mean
and which elementand which element
of a phospholipidof a phospholipid
can be describedcan be described
as this?as this?
41. •What are the twoWhat are the two
main cell typesmain cell types
present in bloodpresent in blood
and how does theirand how does their
structure suitstructure suit
their functions?their functions?
42. • Red blood cells = BiconcaveRed blood cells = Biconcave
shape allows a large surfaceshape allows a large surface
area for better uptake ofarea for better uptake of
oxygen for transportoxygen for transport
• White blood cells = Some canWhite blood cells = Some can
change shape and containchange shape and contain
microbe digesting enzymes tomicrobe digesting enzymes to
kill any invading pathogenskill any invading pathogens
44. •Why canWhy can EuglenaEuglena
not be classifiednot be classified
as either a plantas either a plant
or animal?or animal?
45. • Has plant and animalHas plant and animal
characteristics.characteristics.
• No cellulose cell wall andNo cellulose cell wall and
ingests food byingests food by
phagocytosisphagocytosis
• Also contains chloroplastsAlso contains chloroplasts
and can photosynthesiseand can photosynthesise
47. •What doesWhat does
hydrophobic meanhydrophobic mean
and which elementand which element
of a phospholipidof a phospholipid
can be describedcan be described
as this?as this?
