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Course Code: BIO121 Course Name: Principles of Biology I Short Question:-1 (a) Cells that secrete hormones and enzymes (e.g., pancreatic cells, stomach cells) have a lot of rough endoplasmic reticulum. Explain why. (b) (i) List THREE (3) cytoskeletal elements. (ii) Describe TWO (2) functions of cytoskeletons.

Transport Across the Cell Membrane Worksheet 1. For each of the following examples, state whether the solution is isotonic, hypertonic or hypotonic and draw an arrow to indicate which way water will move. a) b) 100% H₂O 10% NaCl 0% NaCl 90% H₂O 83 5% salt 10% salt

cell defense worksheet (1) [Compatibility Mode] Qv Search in Docume Insert Draw Design Layout References Mailings Review View Acrobat A. Century Gothic - 12 A A- U - abe X,2 x² A A Styles Styles Pane Create and Adobe PI Step 13: Take the "Energy and Transport Challenge!" How many ATP did you use? What type(s) of protein(s) were used? Explain when each type was used. Step 14: Take the "Osmosis Challenge!" What is Osmosis? What is the name of the special proieins that let water pass through? Is this passive or active transport? Step 15: From your Scores Sheet record: Lab Score (% correct): Number Correct: Numbar Incen et Page 2 of 3 * English (United States) 505 words E Focus MAR 15 MacBook Air 888 F1 F2 F3 F4 F5 F6 F7 F @ %23 $ & 7 8. Q W T Y

CELL STRUCTURE AND FUNCTION – EUKARYOTES, PROKARYOTES AND VIRUSES-LABORATORY REPORT SHEET  ACTIVITY 2: CELL MEMBRANES, OSMOSIS AND DIFFUSION         Initial Volume (Vi) (mL) Final Volume (Vf) (mL) Change in Volume (Vi – Vf) (mL) A 20% sucrose 20% sucrose 92.0 mL 94.0 mL -2.0 mL B 40% sucrose 20% sucrose 92.0 mL 92.0 mL 0.0 mL C 20% sucrose 40% sucrose 92.0 mL 90.0 mL 2.0 mL   Treatment Percent Change A -2% B 0% C 2%   Hypothesize which dialysis bags should gain, lose or stay the same in regards to volume. Explain. Which solution is hypotonic, hypertonic and isotonic? Explain what the change in volume of the dialysis tube indicated and describe what happened when the volume increased and when the volume decreased. Explain the relationship between solute concentration and amount of free water or water available for movement.

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Activity 3b - Diffusion across a semipermeable membrane 1. Define selective permeability. 2. Explain the properties of the cell membrane that make it selectively permeable. Activity 3c - Osmosis in potatoes 1. Define osmosis. 2. Define hypertonic, hypotonic, and isotonic. Hypertonic Hypotonic Isotonic Activity 3d - Osmosis in plant cells 1. Fill in the table below to indicate what happened to the elodea cells in each of the following solutions. Solution Hypertonic Isotonic Hypotonic Will the cell membrane swell or shrivel? What happens to the chloroplasts in the hypotonic solution? Why do you think that happens?

question: Increasing the rate of breathing is a more effective strategy to increase alveolar ventilation than increasing depth of breathing.   answer should clearly state whether or not the statement is correct and then concisely explain why. the answer should be like a few sentences and address all of the points in the statement.   Here is an example: Both transmembrane carrier proteins and transmembrane channel proteins can mediate active transport of a hydrophilic solute through a cell plasma membrane. This statement is incorrect. Movement of a solute through a channel protein is always passive, whereas carrier-mediated transmembrane transport can be either passive or active. A transmembrane channel protein creates a pore through the membrane allowing for simple diffusion of a hydrophilic solute down a concentration gradient through the membrane. In contrast, transmembrane carrier protein interacts with and 'escorts' a hydrophilic solute through the membrane and is capable of…

Exercise 3 The MTT assay is a widely used assay to study cell viability. It measures cellular metabolic activity, which serves an indicator of cell viability, proliferation and cytotoxicity. This non- radioactive colorimetric assay is based on the reduction of a yellow tetrazolium salt (3-(4,5- dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide or MTT) to purple formazan crystals by metabolically active cells. Viable cells contain NAD(P)H-dependent oxidoreductase enzymes that reduce the MTT to formazan. The insoluble formazan crystals are dissolved and the resulting coloured solution is quantified by measuring absorbance at 500-600nm using a multi-well spectrophotometer. The darker the solution, the greater the number of viable, metabolically active cells! Exercise 3.1 MTT protocol Your colleagues in the School of Biology and Environmental Science discovered an unusual looking green algae on a recent fieldtrip to Costa Rica. They have provided you with some extracts from the plant…

9:54 AM Done Prelab 7 - Tagged (2 of 64) 三: Prelab 7 - Protein Catabolism In this lab we focus on another important group of metabolism processes: the breakdown of proteins and amino acids. In these labs we will utilize a series of media in tubes that differ in the protein for the bacteria to breakdown, and in the end products they can detect. There are a few new vocabulary terms. Proteolytic enzymes are enzymes that breakdown proteins, usually by first breaking apart the polypeptide into individual amino acids. Hydrolysis reaction is used to break apart the peptide bond holding the amino acids in the polypeptide together. Hydrolysis is used to breakdown urea, a compound produced by the body from the destruction of proteins. Once broken down to individual amino acid, often the amine (NH2) functional group is broken off one end in a deamination reaction, creating NH3. In a decarboxylation reaction the carboxyl group is removed, creating CO2. In a desulfuration reaction a sulfur is…

t be submitted on one attempt auto-submit when time expires bondus password is 515b73158335f6 Question 6 Which ion is actively transported through the cell membrane and why? O Na, because the ion is being moved against its gradient O Mg, because the membrane is impermeable to this ion OK, because the ion is being moved with its gradient O Cl, because the ion is moved to equilibrium < Previous

HBOCPS Das X + Orders - X ← → C D Login OCPS Performance Matters Question 5 of 16 Question 1-5 lipid bilayer low concentration Performa X < Previous olaocps.performancematters.com/ola/ola.jsp?clientcode=flocps# Join a Game - Quizizz K! Play Kahoot! - Enter... Dashboard Submit Test 1 channel protein Educator 3 2 x 12 Exam: 01 × Plans for x carrier protein 3 The diagram below shows three different proteins embedded in a cell membrane, as well as the concentration gradient surrounding the cell. high concentration POREI ***** energy Performance Matte... AP EL U.S. Citize X FLVS Login My Quizzes - Quizizz Welcome, Asheley! 02.Cl.Biology.CRM3.2_2023 EL https://sex S4JypvF Which of the following statements correctly states the process shown in the diagram? O The process labeled 1 shows how cells can easily move molecules with the concentration gradient using high energy molecules. The process labeled 2 shows how cells move molecules against the concentration gradient without needing high…

Osmosis Pre-lab Question Why don’t red blood cells swell or shrink in blood?

Exercise 3 The fate of the synthesized proteins A protein A is detected in a cell in various cellular structures among which the nucleus, the results appear in the following table: Time 5 min 10 min 20 min 40 min Organelte Nucleus RER Golgi A. Vesicles (+) = presence (-) = absence 1. Does protein A undergo exocytosis? Justify based on the table. 2. According to your acquired knowledge, and with the help of the table above, indicate the fate of the synthesized proteins.

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a cell defense worksheet (1) [Compatibility Mode] Qv Search in Document Insert Draw Design Layout References Mailings Review View Acrobat + Sha 三,三, Century Gothic , 12 A A- Aa A IU abe X, x² Styles Styles Pane Create and Share Reque Adobe PDF Signatu What does polar mean? Hydrophilic Step 8: Insert channel proteins into the membrane. Transport substances across the membrane. Note: You can only transport substances using channel proteins until there were What is this process called? Step 9: Moving from to concentration requires the use of energy to substances. This is called transport and uses: (place answer in table) 1. 2. Which is cell Step 10: Carbohydrates are like identification badges. Cells that have different membrane The immune system uses the carbohydrates to carbohydrates do different that your cells belong to and are not or other foreign cells. What does the immune system do to foreign invaders? 149% E Focus 目 Page 2 of 3 505 words English (United States) MAR 15 MacBook Air…

this question from bioengineering  asap

Lecture 6-Worksheet Part 1: Below are TWO ER bound proteins. The green region is indicating the ER transfer signals. 1. Can you label the start and stop transfer signals based on the rules we just went over? 2. Draw and label these proteins. (1) (2) N N ER lumen Part 2: Sketch the orientation of this protein as it would appear in the transport vesicle and plasma membrane. membrane-enclosed organelle (e.g., ER or Golgi) vesicle plasma membrane 1₂:0. 0-9 ? CYTOSOL extracellular fluid 165

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Tube # 2c Table 3-Determination of the optimum temperature of catechol oxidase enzyme. 1st Absorbance 0 min. at Expt. Temp. 3c 4c Q12) After 10 min at experimental temperature was enzyme activity high or low at 75°C and 100°C? Support your answer by looking at the difference between 2nd and 1st absorbances. ( 5c Q13) Was the enzyme denatured at 75°C and/or 100°C% Support your answer by looking at what happens after returning enzyme to room temperature AFTER enzyme was subjected to experimental temperatures of 20 °C,40 °C,60 °C,80 °C and 100°C. "¹ /1 Q14) What happens to the enzyme structure and function when it becomes denatured? ( Potato Expt. extract Temp. (mL) 2 2 2 2 room temp 20 °C 40 °C 75 °C Boiling 100 °C dH₂O Catechol (mL) (mL) 0 0 0 0 13 || 13 13 13 Start Time: 4:20 Absorbance: 0.072 Start Time: 4:25 Absorbance: 0.114 Start Time: 4:25 Absorbance: 0.132 Start Time: 4:27 Absorbance: 0.097 2nd Absorbance after 10 min. in Expt Temp. Time for reading: 4:30 Absorbance: 0.128 Time…

Example Problem: FRAP Data Interpretation The diffusion rate of four different membrane proteins (A, B, C, and D) was measured using a FRAP experiment with purified liposomes. The FRAP recovery curves are shown below. Fluorescence intensity ROI A 3 Time B Time Post-bleaching imaging с Time D Time Pre-bleaching Bleaching imaging imaging (a) Which membrane protein exhibits the higher rate of diffusion in the lipid bilayer? A or B? C or D? (b) Explain the most likely cause of the difference in the recovery curves for proteins A and C.

Cell growth kinetics A mouse-mouse hybridoma cell line is used to produce monoclonal antibody. Growth in batch culture is monitored with the following results. Time (days) Cell concentration (cells.ml* x 10°) 0.0 0.45 00.2 0.52 0.5 0.65 1.0 0.81 1.5 1.22 2.0 1.77 2.5 2.13 3.0 3.55 3.5 4.02 4.0 3.77 4.5 2.20 (a) Determine the specific growth rate during the growth phase. (b) What is the culture doubling time?

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I need help with the diagrams for aHypertonic, Isotonic, Hypotonic, Solute

Course Code: BIO121 Course Name: Principles of Biology I Read the question carefully first Answer the question-4 chemical reaction according to the question 4(a) and 4(b) with step by step clear explanation. Question 4 (a) In cellular respiration, glucose is broken down and the energy released is used to make ATP molecules. ATP molecules can be produced via this reaction: ADP+ P; → ATP. Is the production of ATP endergonic or exergonic? (b) What is the function of ATP molecules in cells?

Velithin a ceu to the exterior 6s' the ceu 4) A cell from a human heart is placed in a solution containing 90% water. The cell itself has a solute concentration of 30%. a) Sketch the shape of the cell before and after it is placed in the solution for a prolonged period of time. ( /2TI) AFTER BEFORE b) What type of environment was the cell placed in? ( 1TI) c) Which word can describe what took place in this cell? ( /1TI)

Ethanol or Lactic acid G3P Руruvat Glucose G3P Руruvat Acetyl-CoA Citric Acid Охaloacetate

Question 8 What is true of binding pockets? They contain electrostatic interactions O They occur in unfolded proteins O They only occur in the membrane They contain variable amino acids All of the above

BSC1010C Enzymes & Cellular Regulation Dr. Harris 4. Compare the rate of the pepsin-catalyzed reaction at pH = 1.5 with the rate of the lipase- catalyzed reaction at pH = 1.5. 5. Compare the rate of the pepsin-catalyzed reaction at pH = 8.0 with the rate of the lipase- catalyzed reaction at pH = 8.0. 6. Based on your understanding of protein structure, explain in detail the effect of exposing an enzyme to a pH outside its optimal range. Include a discussion of the effect on both the structure and function of the enzyme. 7. At what pH values is lipase likely to be denatured? Explain your answer.

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9:56 ← AP_5069_L04_DiffusionAndOsmosis.docx bluehost + W PRE-LAB QUESTIONS Sell anything Start building online. 1. Compare and contrast diffusion and osmosis. 2. Draw a picture of a cell in isotonic, hypotonic, and hypertonic states. 3. Why don't red blood cells swell or shrink in blood? yith PAGE 1/10 A DIX ON 5G ra

Exercise 9 Q10(2)