Download Chapter 7 - Leon County Schools

Chapter 7
Name
1 Which structure is part of the cell’s skeleton?
A
B
C
D
Golgi apparatus
microfilaments
plasma membrane
mitochondria
Date
Class
letter in the diagram below indicates
5 Which
the structure that is most closely associated
with protein building?
A
B
An environmental toxin is discovered that
2 interferes
with certain cellular functions. When
affected cells are examined, it is observed that
proteins that are normally found on the plasma
membrane are instead found in the cytoplasm.
Other proteins are also located improperly.
Which structure is most likely affected by the
toxin?
A lysosomes
B mitochondria
C cell wall
D Golgi apparatus
C
D
A
B
C
D
A
B
C
D
6 How is the plasma membrane of a cell organized?
A one layer of phospholipids, through which
do many scientists think that prokaryotes
3 Why
are similar to the first organisms on Earth?
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
A
B
C
D
Prokaryote cells have a nucleus.
The first organisms were all plantlike.
Prokaryote cells have no nucleus.
They have membrane-bound organelles.
statement would not be included in a
4 Which
summary of the cell theory?
A The cell is the basic unit of organization.
B All cells contain a nucleus that controls cell
division.
C All organisms are made up of at least one
cell.
proteins freely move
B one layer of phospholipids, which are laid
out end-to-end, with a hydrophobic tail
touching a hydrophilic head
C two layers of phospholipids, each of which
has its hydrophilic side turned inward
D two layers of phospholipids, with their polar
hydrophilic heads facing away from each
other
7 In which structure would you find a nucleus?
A
B
C
D
bacterial cell
plant cell
prokaryote
virus
D All cells come from other, preexisting cells.
is the process of maintaining a
8 Homeostasis
cell’s environment. This includes the regulation
of sodium ion (Na+) concentration within the
cytoplasm. If too much Na+ is inside a cell, how
can the concentration be changed?
A More Na+ ions will enter the cell through the
plasma membrane.
B Excess Na+ ions will leave the cell via osmosis.
C Excess Na+ ions will be transported out
through membrane protein channels.
D More Na+ ions will be transported in
through membrane protein channels.
STANDARDIZED TEST PRACTICE
CHAPTER 7
13
Chapter 7
Name
Date
characteristic of the plasma membrane
9 isWhat
illustrated in this drawing?
Class
diagram below represents a cell in water.
bm The
Explain why more water is moving out of the
cell than into the cell.
Outside
the cell
Oxygen
Glucose
Wastes
Water
Plasma
membrane
Water
Wastes
Water
Inside
the cell
Carbon
dioxide
Water molecule
Solute
A
B
C
D
selective permeability
phospholipid bilayer
fluid mosaic construction
impermeability to water
A The concentration of solute in the cell is
higher than it is outside the cell.
B The concentration of water outside the cell is
too great.
C The concentration of solute outside the cell
a large amount of energy to maintain their
activity. What organelles provide this needed
energy?
A vacuoles
B ribosomes
C chloroplasts
D mitochondria
On a laboratory exam, a student is asked to
bl determine
if the cells under a microscope are
plant cells or animal cells. What might the
student look for?
A chloroplasts and a cell wall
B ribosomes and vacuoles
C a nucleus and ribosomes
D a cell membrane and mitochondria
is higher than it is inside the cell.
D The concentration of water inside the cell is
greater than it is outside the cell.
can the cytoskeleton of a cell be
bn How
described?
A
B
C
D
framework and anchor for organelles
selectively permeable series of membranes
semifluid material
transport system
movement of substances through a cell
bo Which
membrane against a concentration gradient
requires energy?
A osmosis
B diffusion
C active transport
D facilitated diffusion
cell organelle contains coded directions
bp Which
for production of proteins?
A
B
C
D
14
CHAPTER 7
endoplasmic reticulum
lysosome
Golgi apparatus
nucleus
STANDARDIZED TEST PRACTICE
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
While viewing a slide of rapidly moving sperm
bk cells,
a student concludes that these cells require