LAB 2

Cell Homeostasis Virtual Lab Place beaker "A" on the lab table and fill it with 1000 mL water from the graduated cylinder. RED! APODA А B C 0.00. E Please click here or on the image above to go to and start the the online lab exercise titled, "Cell Homeostasis Virtual Lab"

6. Similarities between Panel A and Panel B And 6. Differences between Panel A and Panel B

Direction: Read and analyze the following laboratory experiment and answer the following question. PART 1: SURFACE AREA AND CELL SIZE Materials: Agar containing NaOH, and the pH-indicator dye phenolphthalein cured into cubes of various size, 3 plastic cups, HCl, metric ruler, paper towels. Methodology: 1. Safety: Wear goggles and nitrile gloves while completing this lab. 2. Obtain three different size blocks of pink or blue agar. Using a ruler, measure the length, width, and height of the three blocks given below. Cut the agar according to the given dimension. Small = 1 cm x 1 cm x 1 cm Medium = 2 cm x 2 cm x 2 cm • • Large = 1 cm x 1 cm x 6 cm 3. Record your data. 4. Pour HCl or vinegar into two small cups. Place the one larger "cell" into one cup and the two smaller cells in the other cup. Start timing 30 minutes. 5. After 30 minutes, remove the cells and blot them dry with a paper towel. 6. Using your ruler, measure the distance the HCl has diffused into the blocks as shown on the…

Student Portal - Seattle Public SIS Grades S WRLD LIT COMP 10A: S1 1(A) districtIms.seattleschools.org/common-assessment-delivery/start/5398502362?action= This cell is in a v solution. I know this bec hypertonic This cell will isotonic hypotonic

Direction: Read and analyze the following laboratory experiment and answer the following question. PART 3: PLASMOLYSIS Materials: safety goggles, red onion, dropper, slides & cover slips, tweezers/ forceps, compound microscope, iodine, small knife, water, salt (5% and 10% solution) Methodology: 1. With goggles on, carefully cut the onion into wedge shaped pieces using a knife. 2. Use an eye dropper to place a drop of water in the center of a microscope slide. Use the tweezers to peel a thin layer of skin tissue from the thick part of the onion wedge and place it in the center of the microscope slide. 3. 4. 5. Add a drop of water and a drop of iodine over the onion tissue on the slide. Carefully lower a cover glass slip at an angle on the stained tissue to allow air bubbles to escape. 6. Examine the prepared slide under the compound microscope at 100X magnification. 7. Record what the cells look like. 8. Prepare a 5% salt solution by adding 5 grams of salt (measure with balance) per 100…

pre-LAB 5 Diffusion/Osmosis and Protocol A. Assign the terms below to the simplistic scenario: you put sugar (or coffee) in the water to make sweet water (or coffee drink). Solution • Solute • Solvent. B. Look up and define terms in your words - o hypotonic o hypertonic o isotonic. Protocol: BIO 101 Lab 5 Osmosis and Diffusion.pdf Search entries or author Unread G Reply El

Observation of Microscopic Cellular Transport

Answer the no. 3. Subject is Biology

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Answer the question please.

Answer these questions. 1. What is the actual magnification of Cell X? 2. How has magnification of this number of times been achieved if the light microscope itself (used in taking the photograph) only magnifies 1500 times?

100% water Part D: Application 4% water 1. The paramecium (see Figure 3-1) is a single-celled organism. Go to the web and look up this organism. Now select an answer from each blank. H2O (iso-, hypo-, or nucleus oral groove Paramecia live in a(n) hypertonic) environment. In this environment, the paramecium takes in a lot of water through the process of (osmosis, diffusion, facilitated diffusion, or active transport). In order to get rid of this excess water, the paramecium has a specialized organelle called the contractile vacuole that acts as a water pump -contractile vacuole to expel water through the process of (osmosis, diffusion, facilitated diffusion, or active transport). FIGURE 3-1 Paramecium. 30 Anatomy and Physiology | Laboratory Manual

A Cell Transport Study Guide Amara Mohamad - Cell Transpo A docs.google.com/presentation/d/1rTHSAC-61C2E8sLBESlplITDoyKOX5hXDpSNLDJ23TY/edit#slide-id.SLIDES API169621999 3 1 2 3 4 I 5 Hypertonic means that the environment outside of the cell has a higher concentration of solutes than the cell itself. That will attract water molecules from the cell leading to the shrinking of the cell water concentration is greater outside the cell and the solute concentration is higher inside the interior of the cell that is hypertonic to the hypertonic surroundings. The net flow of water is into the cell In an conce equal is no chang place will er 4. The tonicity of a solution is determined by the presence of solutes that (circle one) [ ca cannot ]easily pass the cell membrane. 5. In a HYPERTONIC solution, there is a (circle ore) ( higher | lower ] amount of solutes ide ecell relative the inside of a cell. 6. In a HYPOTONIC solution, there is a (circle one) [ higher lower ] amount of solutes outside…

Question:- 1. Mechanism of action of cytoplasm membrane inhibitors antibiotics 2. Types of cytoplasm inhibitors medicines 3. Resistant strain emergence to cytoplasm membrane

POTATO OSMOSIS (LABORATORY EXPERIMENTATION) MATERIALS: Small basin 2 medium size potatoes (fresh) Table salt Sugar Distilled water (Wilkins or H2Zero) PROCEDURE: A. POTATOES Cut the potatoes to half, making 4 pcs of potatoes Cook one of the half potatoes and set aside the 3 other potatoes Label the cooked potato as letter B. MAKING A CAVITY Make a cavity of each half potato Label the raw potato as A B and C In potato A place salt on the cavity In potato B place sugar in the cavity Leave the potato C empty. Place sugar on the cavity of potato D C. POTATO OSMOSIS - Place distilled water in the basin and arranged the potatoes inside the basin.  Leave it for 1hr. Observe after an hour. Do not mind the color of the potato. QUESTIONS: 1. What can you conclude by comparing potato A and potato D? 2. The liquid in the cavity of some potatoes came from where? 3. What is your conclusion about the experiment?

POTATO OSMOSIS (LABORATORY EXPERIMENTATION) MATERIALS: Small basin 2 medium size potatoes (fresh) Table salt Sugar Distilled water (Wilkins or H2Zero) PROCEDURE: A. POTATOES Cut the potatoes to half, making 4 pcs of potatoes Cook one of the half potatoes and set aside the 3 other potatoes Label the cooked potato as letter B. MAKING A CAVITY Make a cavity of each half potato Label the raw potato as A B and C In potato A place salt on the cavity In potato B place sugar in the cavity Leave the potato C empty. Place sugar on the cavity of potato D C. POTATO OSMOSIS - Place distilled water in the basin and arranged the potatoes inside the basin.  Leave it for 1hr. Observe after an hour. Do not mind the color of the potato. QUESTIONS: 1. What is your observation from potato A to D? 2. What can you conclude by comparing potato A and potato B? 3. What can you conclude by comparing potato A and potato C?

I. On this table, show in diagram or illustration how cells behave in different conditions Hypotonic Solution 2. Lysing Hypertonic solution 3.Shriveled Type of cell Isotonic Solution 1. Normal cell Animal cell 4. Flaccid 5. Turgid |6. Plasmolyzed Plant cell

please answer the following question

Question: Name Class Date Scientific Method Review

Please answer fast options: 1. cell water cytoplasm cytosol plasma membrane 2.intercellular extracellular intracellular hypocellular 3.solvent solute solution 4.solvent solute solution 5. A B C 6.A B C 7. A B C 8. A B C 9. sugar tea temperature water 10. polar or nonpolar why? it is neutrally charged it is hydrophobic it is ionized it exclusively contains C and H atoms

Multiple Choice The apparatus shown was set up. Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards. Which processes caused these changes? 2 attachments glass tube Which processes caused these changes? water turned blue liquid in glass tube moved upwards sugar solution and blue ink pure water A osmosis diffusion partially permeable membrane active transport osmosis diffusion active transport diffusion osmosis A B D

carted: Oct 16 at 8:23am Quiz Instructions 2 pts Question 1 Which microscope would be best at observing the detailed internal Tir membrane structure of cells? Att 34 O Transmission electron microscope O Fluorescent microscope O Scanning electron microscope O Brightfield microscope 2 pts Question 2 Which of the following does a prokarvotic cell not contain? Desktop 82°F Sunn 99+ DELL F12 PrtScr Insert F8 F9 F10 F11 F5 F6 F7

Please written by computer source 1. We want two T-75 flasks, each with 200,000 cells in the flask that holds 20 mL of culture medium per flask. Hemocytometer counting of cells in a 1 mm sq2 area gave an average of 12 cells from a 1:9 dilution of the cell suspension.   a.) Determine the cells/mL. b.) What is the volume of your cell suspension needed to make the flasks? c.) How you would now make the flasks as a new subculture of cells for incubation?

EXPERIMENT : CELL COUNTING FOR DETERMINING VIABLE CELL CONCENTRATION Objectives: To count adherent and suspension cell using hemocytometer.  To calculate viable cell concentration in a suspension. Procedures: Counting Viable Cells using Hemocytometer/Automated Cell Counter▪ Prepare the hemocytometer slide by cleaning the surface with 70% ethanol carefully (do not scratch the semi-silvered coating). Apply the same step for the coverslip. Wet the edges very lightly and press it down over the grooves and semi- silvered counting area. ▪ Collect 20 μl samples from the cell suspension using a pipettor and transfer it immediately to the edge of the hemocytometer chamber. ▪ Expel the suspension and allow it to be drawn under the coverslip by capillary force. Do not overfill the chamber. Blot off any surplus liquid and place the slide under the microscope. ▪ Alternatively, trypan blue dye can be used to stain cells by mixing an equal volume of trypan blue to a cell suspension (1:1) to…

The cell membrane is permeable to water but not to ions.  Select all that apply. Question options:   Beaker A is isotonic to the cell.    Some water in cell A is moving in and out of the cell.    There is a net movement of water into Cell B.    Beaker C is hypotonic to Cell C.

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Lab Procedure 3B: Identify specialized organelles - Chromoplast PROCEDURE: 1. Utilizing the tomato slide 2. Label the chromoplast. What is the function of the chromoplast?

Osmosis Lab  For each beaker with the shell-less egg, identify whether the solution inside was hypotonic, hypertonic, or isotonic in comparison to the control beaker.  water corn syrup corn syrup/water mixture Control no solution

Please answer the following questions below: TOPIC: CELL COUNTING METHOD (Molecular biology and Biotechnology) Why do you need to calculate for volume of media needed after computing the cells? If you are provided with a cell sample, how will you be able to find out its concentration by using a hemocytometer?

Question:- 2.In case of red algae why you grind the sample with water?

e 0 10% sall 0 10% sall The cell SUMMARY Water molecules The solution inside the besker is: N salt The solution inside the cell is: water 16 water How will the water move? Into the cell or out of the cell How will the movement of water affect the cell? This is ain). 2013 1. How do isotonic solutions affect cell size? 2. How do hypotonic solutions affect cell size? 3. How do hypertonic solutions affect cell size? solution 4. Describe a negative thing that could happen to a cell if its environment was too hypertonic 5. Describe a negative thing that could happen to a cell if its environment was too fivpotenc INCAL

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question: 4. in the diagrams below, what type of solution is each cell?

atory manual for the assigned exercises. You are responsible for all & parent cell had 46 chromosomes at the start of mitosis, how many chromosomes will each and the subphases of mitosis)? What happens in each of these phases? What is cytokinesis? What 1. What is the cell cycle? What are the phases of the cell cycle (include the subphases of interphase This study guide is to help you focus your efforts, not to substitute for studying the lab manual itself. 4. Know how to identify interphase and each phase of mitosis on an image of a microscope slide. 3. How many daughter cells are formed during mitosis? What is their genetic relationship? If the You should know all of the terms in bold in your lab manual Exercise 5 – The Cell Cycle and Mitosis. is the Go phase? Give an example of a cell that enters the Ga nhà 2. Why is mitosis necessary? daughter cell have after cytokinesis? You should know how to do this for both Ascaris and whitefish blastula Exercise 6-Movement of Molecules:…

14. 14. Desmosomes __________________________________.