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PCB3134 Past Tests – Questions With Right Solutions

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PCB3134 Past Tests – Questions With Right Solutions

Institution
PCB 3134
Course
PCB 3134










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Institution
PCB 3134
Course
PCB 3134

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Uploaded on
December 14, 2025
Number of pages
17
Written in
2025/2026
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PCB3134 Past Tests – Questions With Right Solutions

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Terms in this set (227)


structurally, starch exists as both amylose, amylopectin
unbranched polysaccharide
chains called .... and branched
polysaccharide chains called

.... is how bacterial and archaeal binary fission
cells replicate their DNA and
divide

ribosomal subunits are referred Svedberg unit
to by the number and letter
combinations (e.g., 70S). the "S"
refers to

collagen fibers are to the cellulose
extracellular matrix as ... is to the
cell wall

... are infectious RNAs that are viroids
responsible for diseases in
several crop plants, such as
tobacco

the ... velocity of an enzymatic maximum
reaction is the velocity at very
high substrate concentration

if a protein is exported from the lysosome or endosome
ER and then packaged in the
Golgi, but not secreted through
a secretory vesicle, then it is
typically sent to the

you are working on a project transmission electron microscope 3 multiple choice options

that involves the direct
observation of DNA molecules.
the microscope that would give
you the best information at this
time would be the

1 mm = .... nm 1,000,000 3 multiple choice options


a regular pattern of hydrogen secondary 3 multiple choice options

bonding is most important in
stabilizing the .... structure of
many proteins

,two proteins associated with a protein A may be a cytoplasmic protein and protein B may be a
rare neurodegenerative disorder membrane associate protein
have been sequenced. Protein A
contains many polar amino acids
with small regions containing
nonpolar, hydrophobic amino
acids. Protein B is rich in
3 multiple choice options
nonpolar, hydrophobic amino
acids with only two small
regions containing polar amino
acids. What might this suggest
about the two proteins?

cellulose belongs to which of carbohydrates 3 multiple choice options

the following groups of
macromolecules

which of the following has the amylose 3 multiple choice options

greatest number of glycosidic
bonds

a five-carbon sugar, a phosphate group, and a nitrogen-
the components of a nucleotide
containing aromatic base
are
3 multiple choice options


steroid; is a component of eukaryotic membranes and is the basis
cholesterol is a .... which ..... of many animal and plant hormones
3 multiple choice options


the methanobacteria, archaea 3 multiple choice options

halobacteria, and sulfobacteria
are included in which domain

which of the following central vacuole 3 multiple choice options

organelles is not generally
found in animal cells

which of the following would be accumulation of a very long chain of fatty acids
attributed to a peroxisomal
3 multiple choice options
dysfunction (not lysosome)

infectious misfolded proteins that cause normal protien
prions are molecules to misfold
3 multiple choice options


the smooth endoplasmic lipids 3 multiple choice options

reticulum functions in the
synthesis of

lignin is an important plant cell walls 3 multiple choice options

component in

the extracellular matrix outside collagen and proteoglycans 3 multiple choice options

the plasma membrane of animal
cells is typically composed of

mitochondria are thought to motility 3 multiple choice options

have evolved from ancient
bacteria. which characteristic of
a free-living bacteria have
mitochondria lost over time

an enzyme is active in the sensitive to changes in pH 3 multiple choice options

stomach of an animal but quickly
loses its activity when it leaves
the stomach. this example
illustrates that enzymes are

an enzyme reduces the free transition state 3 multiple choice options

energy of which of the following

, which of the following variables kcat 3 multiple choice options

is not part of the Michaelis-
Menten equation

extended regions of large hydropathy
positive values in ... plots show
regions where α-helices cross
membranes

longer fatty acid chain lengths higher
and increases in saturation are
associated with ... melting
temperature in membranes

the proton gradient created by intermembrane space
the electron transport chain has
the highest concentration of
protons in the ...

the ATP synthesized by ATPase is mitochondrial matrix
released into the ...

the four major classes of ATP V-type, P-type, F-type, and ABC-type
dependent transport proteins
are

the movement of a pair of 4, 0
electrons from NADH through
complex I of the electron
transport chain will lead to ...
protons being pumped from the
matrix to the intermembrane
space, while the movement of
an electron pair from FADH2
through complex II will transport
... protons

what factor(s) regulate fatty acid structure 3 multiple choice options

membrane fluidity

of the following molecules, oxygen 3 multiple choice options

which would you predict
diffuses most readily across
membranes

adhesive
each of the following is a type of tight
cell- cell junction gap
plasmodesmata

which of the following would 16 carbon long fatty acids with 3 double bonds
you expect to find
predominating in the plasma
membrane of a unicellular 3 multiple choice options

eukaryotic organism thriving in
glacier ice

using a laser beam to inactivate photobleaching 3 multiple choice options

fluorescence dye molecules
connected to proteins or lipids
on a cell membrane is called

which of the following types of peripheral protein 3 multiple choice options

protein would be most easily
removed from a membrane by
changing pH or ionic strength

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