Properties of the Cell Membrane - Practice Exercise 1

You are about to observe a slide using the microscope below. What is the safest way to start?

You are about to observe a slide using the microscope below. What is the safest way to start?

You are about to observe a slide using the microscope below. What is the safest way to start?

You are about to observe a slide using the microscope below. What is the safest way to start?  (1 mark)

You are about to observe a slide using the microscope below. What is the safest way to start?  (1 mark)

You are about to observe a slide using the microscope below. What is the safest way to start?  (1 mark)

You are about to observe a slide using a light microscope. What is the safest way to start?  (1 mark)

After viewing an animal cell under a microscope, a student describes a clear area surrounding the nucleus. Which part of the cell is this and why is it important?

At the Kenya Science Fair, Grade 8 students from Molo Primary School observe animal cells under a microscope. One student, Achieng, notices a clear, jelly-like area around the nucleus in her slide. Their teacher asks them to identify this part and explain its importance. Which part of the cell is Achieng observing, and why is it important?  (1mark)

At the Kenya Science Fair, Grade 8 students from Molo Primary School observe animal cells under a microscope. One student, Achieng, notices a clear, jelly-like area around the nucleus in her slide. Their teacher asks them to identify this part and explain its importance. Which part of the cell is Achieng observing, and why is it important?  (1mark)

At the Kenya Science Fair, Grade 8 students from Molo Primary School observe animal cells under a microscope. One student, Achieng, notices a clear, jelly-like area around the nucleus in her slide. Their teacher asks them to identify this part and explain its importance. Which part of the cell is Achieng observing, and why is it important?  (1 mark)

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function?

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function?

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function?

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function? (1 mark)

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function? (1 mark)

John sees a green oval structure in a plant cell under a light microscope. It is likely a chloroplast. What is its function? (1 mark)

Amina used a light microscope to observe a Sukuma wiki leaf sample in a biology project. Which of these descriptions best matches what she should see?

Amina, a learner at a primary school in Nairobi, prepared a slide of a Sukuma wiki (kale) leaf to observe under a light microscope. Based on your understanding of plant cell structures, which of the following descriptions best matches what she is likely to see? (1 mark)

Amina, a learner at a primary school in Nairobi, prepared a slide of a Sukuma wiki (kale) leaf to observe under a light microscope. Based on your understanding of plant cell structures, which of the following descriptions best matches what she is likely to see? (1 mark)

Amina, a learner at a primary school in Nairobi, prepared a slide of a Sukuma wiki (kale) leaf to observe under a light microscope. Based on your understanding of plant cell structures, which of the following descriptions best matches what she is likely to see? (1 mark)

In the diagram below, which part labeled Y represents the nucleus?

In the diagram of a stained onion cell, the part labeled Y appears as a small, round, darkly stained structure near the center of the cell. Which part of the cell is Y most likely to represent?  (1 mark)

In the diagram of a stained onion cell, the part labeled Y appears as a small, round, darkly stained structure near the center of the cell. Which part of the cell is Y most likely to represent?  (1 mark)

In the diagram of a stained onion cell, the part labeled Y appears as a small, round, darkly stained structure near the center of the cell. Which part of the cell is Y most likely to represent?  (1 mark)

In the diagram of a stained onion cell, the part labeled Y appears as a small, round, darkly stained structure near the center of the cell. Which part of the cell is Y most likely to represent?  (1 mark)

In the diagram of a stained onion cell, the part labeled Y appears as a small, round, darkly stained structure near the center of the cell. Which part of the cell is Y most likely to represent?  (1 mark)

Look at the animal cell sketch below. What conclusion can you make from the fact that it has no green structures and irregular shape?

Look at the animal cell sketch below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer?  (1 mark)

Look at the animal cell sketch below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer?  (1 mark)

Look at the animal cell sketch below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer?  (1 mark)

Look at the animal cell sketch below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer and why?  (1 mark)

Look at the animal cell sketch below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer and why?  (1 mark)

Look at the diagram below. It has no green structures and has an irregular shape. What can you conclude about the type of cell it is, and which features support your answer and why?  (1 mark)

While using a microscope, Amina observes a plant cell with a large central vacuole, cell wall, and chloroplasts. What feature confirms that it is a plant cell?

While using a microscope, Amina observes a plant cell with a large central vacuole, cell wall, and chloroplasts. What feature confirms that it is a plant cell? (1mark)

While using a microscope, Amina observes a plant cell with a large central vacuole, cell wall, and chloroplasts. What feature confirms that it is a plant cell? (1mark)

While using a microscope, Amina observes a plant cell with a large central vacuole, cell wall, and chloroplasts. What feature confirms that it is a plant cell? (1 mark)

During a class experiment, Wanjiku observes that certain substances can enter and exit a cell but others cannot. Which cell structure is responsible for this?

During a class experiment, Wanjiku observes that certain substances can enter and exit a cell but others cannot. Which cell structure is responsible for this? (1 mark)

During a class experiment, Wanjiku observes that certain substances can enter and exit a cell but others cannot. Which cell structure is responsible for this? (1 mark)

During a class experiment, Wanjiku observes that certain substances can enter and exit a cell but others cannot. Which cell structure is responsible for this? (1 mark)

Look at the animal cell as seen under a light microscope. Which part is most likely visible?

During a science lesson at Kisumu Day School, Grade 8 students are tasked with observing an animal cell under a light microscope. Each student sketches what they see. Later, the teacher asks: "Based on the limitations of a standard school light microscope, which part of the animal cell are you most likely to have seen clearly?   (1 mark)    

During a science lesson at Kisumu Day School, Grade 8 students are tasked with observing an animal cell under a light microscope. Each student sketches what they see. Later, the teacher asks: "Based on the limitations of a standard school light microscope, which part of the animal cell are you most likely to have seen clearly?   (1 mark)    

During a science lesson at Kisumu Day School, Grade 8 students are tasked with observing an animal cell under a light microscope. Each student sketches what they see. Later, the teacher asks: "Based on the limitations of a standard school light microscope, which part of the animal cell are you most likely to have seen clearly?   (1 mark)    

Write a word equation to show what happens when Aluminium reacts with Oxygen.  (1 mark)

Write a word equation to show what happens when Aluminium reacts with Oxygen.  (1 mark)