Cell World Quiz: From Cells to SolutionsVersion en ligne
Answer the following question. This quiz will serve as your review in the upcoming examination
1
Which statement best describes the cell membrane's role in the cell?
2
Which organism is typically unicellular?
3
If red litmus paper turns blue, the solution is:
4
In the particle model, which property is true for particles in a liquid?
5
The nucleus of a cell primarily contains:
6
Which cell type has a rigid cellulose cell wall that supports its shape?
7
Red litmus paper remains red when dipped into Solution A, while blue litmus paper also stays blue in the same solution. How should Solution A be classified?
8
An investigation shows that 35 g of Solute X dissolves completely in 100 mL of water at 25°C. When a student adds 40 g of Solute X to the same amount of water at 25°C, 5 g settles at the bottom. How is the solution above the settled solid classified?
9
A student transfers a prepared slide from the low-power objective to the high-power objective. What change will the student observe in the field of view?
10
A group of students wants to investigate if crushed salt dissolves faster than whole rock salt. Which variable must they change between their setups?
11
A student leaves a glass of ice water on a table. After an hour, droplets of water form on the outside of the glass. Which explanation best applies the particle model of matter?
12
A learner wants to measure the mass of a solid block for an experiment. Which instrument and unit should the learner use?
Choose one or more answers
13
A student wants to test if stirring increases the rate at which sugar dissolves in water. Which factor must be kept constant between both setups to ensure a fair test?
14
14. A group of students is tasked with creating a safety and maintenance protocol for handling optical equipment in the science laboratory. Which guideline represents the correct procedure after finishing an observation under a compound microscope?
15
A teacher reminds students to always transport a compound microscope using two hands—one holding the arm and the other supporting the base. What is the primary scientific and practical reason for this rule?
16
A learner sets up an experiment with two identical beakers containing 100 mL of water at 30°C:
Beaker 1: 10 grams of fine table salt dissolves completely in 25 seconds.
Beaker 2: 10 grams of coarse rock salt dissolves completely in 70 seconds.
Which scientific deduction is best supported by these experimental results?
17
A student views two slides under a microscope: one containing a human cheek cell and another containing an leaf cell. Which set of organelles should the student label as common to both cells?
18
During a laboratory activity, a learner observes a cell structure that acts as a semi-permeable barrier controlling the movement of materials into and out of the cell. Since this structure is found in both plant and animal cells, which structure is it?
19
A classmate claims, "If an organism is large enough to be seen with the naked eye, it must be made of millions of cells." How should this claim be evaluated?
20
Your group is writing a chart to help Grade 7 students distinguish between unicellular and multicellular organisms. Which criteria should your group include in the guide?
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