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Labirin
Gaya Bebas
Menengah Rendah 1
Sains
Experiment 3.4
Nurul Fathiyah
27
Masalah tambahan (19/ 20)
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masalah 1

pilihan

What is the aim of the experiment?

  • To find the solubility of sucrose in water
  • To determine the concentration of sucrose solution that is isotonic to the potato cells
  • To measure the weight change of potato strips
  • To observe the effects of water on potato strips

masalah 2

pilihan

What happens to the potato strips in a hypertonic solution?

  • They gain mass
  • They lose mass
  • There is no change in mass
  • They expand

masalah 3

pilihan

Which of the following best describes an isotonic solution?

  • The concentration of solute is higher outside the cell than inside
  • The concentration of solute is equal inside and outside the cell
  • The concentration of solute is higher inside the cell than outside
  • There is no water movement across the cell membrane

masalah 4

pilihan

Why the potato strip's does not change in mass indicate in the isotonic solution?

  • The amount of sucrose used
  • The type of solution used
  • The net movement of water into or out of the potato cells
  • The temperature of the solution

masalah 5

pilihan

How does a hypertonic solution affect a potato strip?

  • The strip swells and becomes turgid
  • The strip remains unchanged
  • The strip shrinks and loses mass
  • The strip becomes more flexible

masalah 6

pilihan

What is the dependent variable in this experiment?

  • The mass or length of the potato strip
  • The concentration of the sucrose solution
  • The time of observation
  • The temperature of the solution

masalah 7

pilihan

How would you identify the isotonic concentration in this experiment?

  • By the highest mass change of the potato strip
  • By the solution that causes no change in the mass of the potato strip
  • By the solution that causes the potato to expand
  • By the solution that causes the greatest shrinkage

masalah 8

pilihan

What the purpose of using a control in this experiment?

  • To prevent the potato from drying out
  • To compare the experimental result with a known standard
  • to ensure the experiment is conducted at room temperature
  • To control the time the potato strips are left in the solution

masalah 9

pilihan

Why is it important to repeat the experiment multiple times?

  • to test different temperature
  • to find the best concentration of sucrose
  • to ensure the accurancy and reliability of the results
  • to change the type of potato used

masalah 10

pilihan

Why is the concentration of the sucrose solution the independent variable in this experiment?

  • Because it is the variable that is measured
  • Because it is the variable that is changed or manipulated
  • Because it is the variable that remains constant
  • Because it is the variable that determines the rate of osmosis

masalah 11

pilihan

What would you expect to happen in a sucrose solution with a concentration higher than the isotonic concentration?

  • The potato strip would gain mass
  • The potato strip would lose mass
  • The potato strip would stay the same
  • The potato strip would burst

masalah 12

pilihan

How can you ensure the sucrose solutions are accurately prepared?

  • By stirring the solution well
  • By using a balance to measure the sucrose
  • By leaving the solutions at room temperature for an hour
  • By using the same amount of water for all solutions

masalah 13

pilihan

What is the importance of recording both the initial and final mass of the potato strips?

  • To measure the rate of reaction
  • To determine the change in mass due to osmosis
  • To calculate the amount of sucrose absorbed
  • To measure the effect of temperature on osmosis

masalah 14

pilihan

Which factor is most likely to cause unreliable results in the experiment?

  • Using potato strips of different sizes
  • Using the same concentration of sucrose solution
  • Leaving the potato strips for a constant time
  • Ensuring that all potato strips are fresh

masalah 15

pilihan

What is osmosis?

  • The movement of solutes from high to low concentration
  • The movement of water from high to low concentration
  • The movement of water across a selectively permeable membrane from low to high solute concentration
  • A process that requires energy input

masalah 16

pilihan

What occurs during plasmolysis in a plant cell?

  • The cell membrane pulls away from the cell wall due to water loss
  • The cell becomes more rigid and turgid
  • The cell bursts due to excessive water intake
  • The cytoplasm swells and the cell becomes turgid

masalah 17

pilihan

What is the result of deplasmolysis in a plant cell?

  • The cell loses water and shrinks
  • The cell membrane pulls away from the cell wall
  • The cell regains water and becomes turgid again
  • The cell bursts and dissolves

masalah 18

pilihan

How does a hypotonic solution affect a plant cell?

  • The cell shrinks
  • The cell becomes turgid
  • The cell bursts
  • The cell becomes plasmolyzed

masalah 19

pilihan

What is the role of the central vacuole in plant cells?

  • To store water and nutrients
  • To perform photosynthesis
  • To replicate DNA
  • To transport proteins
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