Answers
the
Cell
2)
bacteria
4)
plant cells contain a large vacuole that reduces the volume of the
cytoplasm.
6)
A
8)
B
10)
proteins
12)
endoplasmic reticulum
14)
smooth endoplasmic reticulum
16)
rough ER → vesicles → Golgi → plasma membrane
18)
lysosome
20) D
22)
A
24C
26) E
28)
ATP is produced.
DNA is present.
Ribosomes are
present.
30)
mitochondria. chloroplasts.
32)
chloroplasts
34)
to maintain a critical limit on cell size
36) cilia flagella
38)
ameboid movement
formation of cleavage
furrows
contracting of muscle
cells
40)
gap junctions
42)
Pili
44)
Chromatin
46)
central vacuole
48)
phagocytic white blood cell
Membranes
54)
nucleic acids.
56)
lack of covalent bonds between the lipid and protein components of the membrane,
. ,
weak hydrophobic interactions among the
components in the interior of the membrane.
,the presence of
liquid water in the interior of the membrane.
58)
amphipathic.
60)
protein synthesis.
62)
They are usually transmembrane proteins.
64)
maintains membrane fluidity
66)
cell-cell recognition
68)
small and hydrophobic
70)
the integrity of the lipid bilayer is broken when the membrane freezes.
72)
the type of transport proteins that are present in the membrane ,the
lipid bilayer being permeable to primarily small, nonpolar molecules
74)
it moves through aquaporins in the membrane.
76)
facilitated diffusion.
78)
active transport.
80)
facilitated diffusion moves substances down their concentration gradient
and active transport moves them against their gradient.
facilitated
diffusion does not rely on cellular energy and active transport does.
facilitated diffusion uses channel or carrier proteins and active transport does not.
82)
contributes to the membrane potential.
84)
an energy source such as ATP or a proton gradient.
86)
Sodium ions are pumped out of a cell against their gradient.
,Potassium ions are
pumped into a cell against their gradient. , The
pump protein undergoes a conformational change.
88)
It will be on the cytoplasmic side of the ER.
90)
exocytosis.
92)
phagocytosis.
94)
defective LDL receptors on the cell membranes
96)
pinocytosis brings only water into the cell, but receptor-mediated endocytosis
brings in other molecules as well.
98)
passive transport.
100)
into; membranous vesicles
102)
Certain proteins are unique to each membrane.
104)
a greater proportion of unsaturated phospholipids