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DATA AND ANSWER SHEET
Name Sibal, Deanne Devonney R. Remarks/Rating
Course, Yr. & Sec.ODP1A Instructor Dr. Maria Hedley A. Basco
Class Schedule 7:00-10:00 am, T-TH Group No. 7 Date June 30, 2012
EXPERIMENT 3
THE CELL
I. Draw and label the parts of the cell
II. Draw the Fluid Mosaic Model of the Cell Membrane. Label and give the function/s of each part.
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Parts and their function/s:
Carbohydrate Polymers may attach to parts of the membrane, formingGlycolipids when attach to PhospholipMolecules and Glycoproteinswhen they attach to proteins. Both Glycolipids and Glycoproteins can act asC
Receptor Sites. Hormones may bind to them, as may drugs, to instigate a response within the cell. They m
also be involved in Cell Signalling in the Immune System.
Intrinsic Proteins are Channel Proteins. These are Transport Proteins that allow the movement of molecu
that are normally too large or too Hydrophilic to pass through the membrane by forming a tube-li
structure that goes through the whole membrane.
Transport Proteins are Carrier Proteins. These use energy in the form ofATP to actively move substancacross the membrane. For example, ions in the soil are actively transported in the root hair cells of plants.
Enzymes and Coenzymes may be attached to part of the membrane in order to carry out MetaboReactions.Mitochondria have infoldings of the membrane (called Cristae) containing Enzymes which are par
responsible for Aerobic Respiration.
The Steroid Molecule Cholesterol gives the Plasma Membrane in some Eukaryotic Cells stability by reducithe fluidity and making the Bilayer more complete.
III. Complete the following table:Structure/Picture of Organelles Description Composition and Metabolic
Functions
Cytoplasm
Cytosol
cell material outside thenucleus but within the cell
membrane
contains structures calledorganelles
fluid portion of a cell'scytoplasm
lies outside the organellesand other insoluble
components of the
cytoplasm
gelatinous, semtransparent fluid that fi
most cells
metabolic pathwaincluding glycolysis
cell division
contains water, frproteins, and a variety
other substances
highly organized at tmolecular level
where a major part cellular metabolism takplace
proteins within cytosol plan important role
glycolysis, serve intracellular receptors, a
form part of ribosom
enabling protein synthesis
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DNA
Nucleus
Nucleolus
Mitochondria
Nucleic acid that makes upthe chromosomes
The genetic identity of thecell
Large spherical structuresurrounded by a doublemembrane
Composed of the nucleolus Where the chromosomes
(DNA) can be found
Round mass inside thenucleus
The core of the nucleus Where RNA can be found
Sacs with folded, doublemembranes
Power house of the cell
.Controls heredity acellular activities
Controls the geneactivities of the cell
Where ribosompreassemble
They release energy for cfunctions
Center of respiration of tcell
Produce the most enerrequired for cell
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Endoplasmic Reticulum
Smooth ER
Rough ER
Golgi Complex
Lysosome
It is not studded withribosomes and is associated
with smooth slippery fats.
It is studded with ribosomes
Flattened stacks ofmembrane-bound sacs
the digestive system in thecell
small membrane boundspheres
Associated with tproduction and metabolis
of fats and sterohormones
Involved in some proteproduction, protein foldin
quality control and dispat
function as a packagiplant, modifying vesic
from the Rough ER
It breaks down moleculinto their base componen
digestive enzymes. Th
demonstrates one of t
reasons for having all pa
of a c
compartmentalized; the ccouldnt use the destructi
enzymes if they weren
sealed off from the rest
the cell.
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Peroxisome
Plasma Membrane
Ribosome
RNA
Membranous sacscontaining oxidative
enzymes
Outer bilayer boundary ofcell
Composed of lipids andproteins
Float freely in thecytoplasm, and are alsobound to the endoplasmic
reticulum (ER)
Three types of nucleic acidinvolved in transcription
and translation of genetic
code
Destroy hydrogen peroxiin the cell
Protection Regulates passage
substance in and out t
cell
Where RNA is translatinto protein
mRNA carries genetic cofrom DNA
tRNA is involved in aminacid activation, rRNA involved in ribosom
structure
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