Download Eukaryotic cells .................................... and

Egyptian American International School
Science Department
Grade 7 – Guided reading
Eukaryotic cells
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.................................... and …………………………………… are two types of eukaryotic cells.
Cell wall
 A cell wall is ……………………………………………………………………….
 ……………………………. and ……………………………. have cell walls made of ……………………………
 ………………………, including …………………….. and …………………………, also have cell walls made of
…………………………….
 Prokaryotic cells such as ………………………….. and ……………………. also have cell walls.
Cell membrane
 All cells have a cell membrane. The cell membrane is ………………………………………………..
 In cells that have cell wall, the cell membrane lies ……………………………………………………..
 The cell membrane contains …………………………, ………………………., and ………………………..
 The cell membrane has two layers of …………………………………….
 Lipids are ……………………………….., or ………………………………….. They form the ………………………. part of the
membrane.
 Phosphorus-containing ends are ………………………………., or ………………………………….. They form the
…………………. part of the membrane.
 Draw a part of the cell membrane
Cytoskeleton
 The cytoskeleton is …………………………………………………………………………………………………………… and it acts as
both a ……………………………. and a skeleton. It keeps the cell membrane from collapsing and also helps
some cells move.
 The cytoskeleton is made of ……………. Types of proteins. One protein is ………………………………. The other
two are ………………………………….. fibers
Nucleus
 The nucleus is ………………………………………………………………… it contains …………………………………………………..
 DNA contains information on how to make a cell’s …………………………..
 Proteins control …………………………………………………………….. They also provide ………………………………………..
 Proteins are not made in …………………………..
 The nucleus is covered by ……………………………………… that have ………………….
 The nucleus has a dark area called …………………….. where the cell begins to make its …………………………….
 Draw the nucleus
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Ribosomes
 Ribosomes make …………………………..
 Ribosomes are the …………………………….of all organelles and there are ………………… ribosomes in a cell
than there are any other organelles.
 Some …………………… freely and others are ……………………….. to membranes or the cytoskeleton.
 Ribosomes are not covered by …………………………….
 Proteins are within the ribosomes. Proteins are made of …………………………………….
 An ………………………………….. is any one of about 20 different organic molecules that are used to make
proteins.
Endoplasmic reticulum
 Many of the …………………………………… happen on or in the endoplasmic reticulum.
 The endoplasmic reticulum is …………………………………………………………………………………………………………………
 The ER is part of the internal ………………………………………………….. of the cell.
 Endoplasmic reticulum is either ……………………………….. or …………………………………
 The …………………………… is covered with ……………………… and it is usually found near the ……………………….
 ER that lack …………………………. Is smooth ER
 The function of smooth ER include …………………………………… and ……………………………………….
 Draw rough endoplasmic reticulum
Mitochondria
 A mitochondrion is ………………………………………………………………………………………
 Mitochondria are covered by ……………………………………………
 Energy released by ………………………………. Is stored in a substance called …………………..
 Mitochondria have their own …………………………, and can …………………… within the cell
 Draw a mitochondrion
Chloroplasts
 Plants can make ………………………………….
 Chloroplasts are ………………………………………………………………………………………………
 Chloroplasts have ……………………………………….. and their own …………………
 Chloroplasts are green because they contain ………………………………….., a green pigment.
 Chlorophyll traps ……………………………………………..
 Sugar produced by photosynthesis is then used by ………………………………….. to make ………………
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
Draw a chloroplast
Golgi complex
 The organelle that …………………………………………………………………………………….. is called Golgi complex.
 Lipids and proteins from the …………………. are delivered to the ………………………………………….. There, they
may be modified to different jobs. The final products are …………………………….. in a piece of the Golgi
complex’s ………………………………. This membrane pinches off to form a small bubble that transports its
content to ……………………………. or …………………………………
 Draw golgi complex
Cell compartments
 ………………………………………………………………………………………………………………………………. is a vesicle.
 A vesicle is ……………………………………………………………………….
 All ……………………………….. cells have vesicles.
 Some vesicles form when …………………………………………………………………………………………………..
Cellular digestion
 Lysosomes are …………………………………………………………..……………………………..
 They destroy ………………………………………… organelles, get rid of ………………………………………., and protect
the cell from ………………………………………………….
 Lysosomes are found mainly in …………………………………………..
 What happens when eukaryotic cells engulf particles?
Vacuoles
 A vacuole is …………………………………
 In ………………….. and ………………… cells, some vacuoles act like ………………………………
 They store ……………………………………….. and aid in ……………………………………….
 The large central vacuole in …………………………………….. stores ……………………………………………
 Large vacuoles that are full in water help …………………………………………..
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