BILD 1 Week 5 section materials (asynch)
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UCSD BILD 1: The Cell Section, Week 5 UCSD BILD 1: The Cell Question 1 This is a graph of the rate of reaction vs. the pH for the protein pepsin, an enzyme that breaks down protein in the human stomach. The human stomach is very acidic (low pH). Another protein that breaks down protein, trypsin, is in the human small intestine. The pH of the small intestine is slightly basic, around pH 8.
On the same graph, please draw the predicted rate of reaction vs. pH for trypsin.
Question 2 Your study friend tells you, “
The oxygen you inhale does not automatically become part of your dry biomass.
” Would you agree or disagree with this statement, and why? (suggestion: 1-3 sentences) Question 3: A man who worked is experiencing an illness with many symptoms, including muscle weakness. His mother alleges that his wife is poisoning him, and you are assigned to investigate. A doctor’s visit shows mitochondrial damage. Levels of key molecules are as follows:
a.
You learn that the wife’s parents used to be woodworkers, so in their old shed, she has access to arsenate, which used to be used to preserve wood until it was banned for being toxic. Arsenate inhibits glycolysis. Are the medical results consistent with arsenate poisoning? Justify your reasoning. (roughly 1-2 sentences) Molecule Level compared to normal Pyruvate High Acetyl Co-A Low NADH Low Rate of reaction à
UCSD BILD 1: The Cell Section, Week 5 UCSD BILD 1: The Cell b.
The man missed his childhood home, and he had his mother ship him water from their well, which he drinks almost exclusively. (His mother only drinks Coke.) You find that the water has naturally very high levels of arsenite, which mainly inhibits the transition reaction. Are the medical results consistent with arsenite poisoning? Justify your reasoning. (roughly 1-2 sentences) c.
In his job, the man used to spread sodium fluoroacetate to combat mice. Sodium fluoroacetate only inhibits the citric acid cycle. Are the medical results consistent with sodium fluoroacetate poisoning? Justify your reasoning. (roughly 1-2 sentences) d.
The couple previously had a flea problem in their house, so the wife had access to a store of the pesticide rotenone. Rotenone only inhibits the electron transport chain. Are the medical results consistent with rotenone poisoning? Justify your reasoning. (roughly 1-2 sentences)
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Q5.
Ion exchange chromatography purifies a protein based on difference in magnitude of net
Identify the type of column (anion exchange
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MULTIPLE CHOICE QUESTION
Glucose is required for aerobic cellular
respiration.
False
True
Rewatch
Submit
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select
select
select
select
select
select
select
select
select
select
1. Where many
processes take place in
the cell?
2. Cell control center
3. The site of digestion?
4. The site for protein
synthesis?
5. The site for most of
the energy production?
6. The site of digestive
molecule formation?
7. The site for lipid
synthesis?
8. The place where
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9. More used in cell
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Voltooi die volgende paragrawe. / Complete the following paragraphs.
Woord bank / Word bank
glukokinase, glikolise, Krebs siklus, oksidatiewe fosforilasie, glikogenese, piruvaatsuur, mitokondria,
lipoprotein lipase, gliserol, trigliseriedes, chilomikrone, Beta-oksidasie, glukoneogenese, ATP,
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glucokinase, glycolysis, Krebs cycle, oxidative phosphorylation, glycogenesis, pyruvic acid
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[10]
Meeste selle genereer_4.1_ en ander hoë energie verbindings deur die afbraak van koolhidrate.
4.2 vind plaas in die sitoplasma van 'n sel en produseer 2 molekules_4.3. Daarna volg die
_4.4_ waartydens waterstof atome oorgedra word aan koënsieme wat die suurstof verbrandende en ATP
genererende reaksie
4.5 inisieer.
Most cells generate_4.1 and other high energy compounds through the breakdown of carbohydrates.
__4.2___ occurs in the cytoplasm of a cell…
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3 of 3
SECTION - B
Task: 2
Complete the following table by writing the name of the cell part or organelle
in the right hand column that matches the structure/function in the left hand
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Structure / Function
Cell part
Stores material within the cell
The sites of protein synthesis
Transport materials within the cell
The region inside the cell except for the nucleus
Small bumps located on portions of the endoplasmic
reticulum
The membrane surrounding the cell
Composed of a phospholipids
Longer whip-like structures used for movements
Site where ribosomes are made.
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CSP1501/101/3/2
Question 1: Multiple-choice questions
1.1.
The cell membrane is important for all the following reasons except
1. it determines what substances enter and exit the cell.
2. it separates the cell's internal fluid and the surrounding extracellular fluid
3. it acts as a site for cell-to-cell interaction and recognition.
4. it is an essential site for DNA transcription.
1.2.
The function of a cell nucleus is:
hydrate production
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Question 3 of 16
Performance Matters
Question 1-3
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Water
Starch
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Glucose
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Students are building a model of the cell membrane. They are demonstrating how the cell membrane regulates the movement of molecules into and out of a cell by suspending a
semi-permeable membrane in a beaker. At the start of the model, the semi-permeable membrane contains starch and glucose and the beaker holds water as shown in the figure
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