Podcast
Questions and Answers
Who discovered cells and how?
Who discovered cells and how?
- Anton van Leeuwenhoek, by observing onion cells under a microscope
- Louis Pasteur, by studying the structure of bacteria under a microscope
- Gregor Mendel, through genetic experiments on pea plants
- Robert Hooke, by using a primitive microscope to observe cells in a cork slice (correct)
Why are cells called the structural and functional unit of life?
Why are cells called the structural and functional unit of life?
- Due to their role as building blocks of life and their capability of all living functions (correct)
- Because they are the smallest units of life and constitute various components of plants and animals
- Because they vary in shape, size, and activity they perform
- As a result of their specific functions related to the shape and size of the cell
How does the exchange of gases (CO2 and O2) between cells take place?
How does the exchange of gases (CO2 and O2) between cells take place?
- Active transport process from lower concentration to higher concentration
- Diffusion process from higher concentration to lower concentration (correct)
- Osmosis process from higher concentration to lower concentration
- Facilitated diffusion from lower concentration to higher concentration
What is the reason for the accumulation of CO2 inside the cell?
What is the reason for the accumulation of CO2 inside the cell?
Why does the concentration of O2 decrease inside the cell during respiration?
Why does the concentration of O2 decrease inside the cell during respiration?
What defines cells as the building blocks of life?
What defines cells as the building blocks of life?
What is the process in which water moves from a region of high concentration to a region of low concentration through the plasma membrane called?
What is the process in which water moves from a region of high concentration to a region of low concentration through the plasma membrane called?
Why is the plasma membrane known as a selectively permeable membrane?
Why is the plasma membrane known as a selectively permeable membrane?
Which organelles contain their own genetic material?
Which organelles contain their own genetic material?
What is the smallest unit of life capable of all living functions?
What is the smallest unit of life capable of all living functions?
Why are lysosomes sometimes referred to as 'suicide bags'?
Why are lysosomes sometimes referred to as 'suicide bags'?
Where are proteins synthesized inside the cell?
Where are proteins synthesized inside the cell?
What do we call the movement of water from a region of high concentration to a region of low concentration?
What do we call the movement of water from a region of high concentration to a region of low concentration?
What happens if the organization of a cell is destroyed due to some physical or chemical influence?
What happens if the organization of a cell is destroyed due to some physical or chemical influence?
What is movement of water through a selectively permeable membrane known as?
What is movement of water through a selectively permeable membrane known as?
What are the two organelles that contain their own genetic material?
What are the two organelles that contain their own genetic material?
What is a triangle?
What is a triangle?
What does 'congruent' mean?
What does 'congruent' mean?
How many sides does a triangle have?
How many sides does a triangle have?
In triangle ABC, what do AB, BC, and CA represent?
In triangle ABC, what do AB, BC, and CA represent?
What will you study in detail in this chapter?
What will you study in detail in this chapter?
What does the prefix 'tri-' mean?
What does the prefix 'tri-' mean?
What is the condition for two triangles to be congruent?
What is the condition for two triangles to be congruent?
Why is the concept of congruence used in making casts for ice trays?
Why is the concept of congruence used in making casts for ice trays?
What is the significance of congruent refills for a pen?
What is the significance of congruent refills for a pen?
What do we observe when two circles of the same radius are placed on each other?
What do we observe when two circles of the same radius are placed on each other?
Why are the large squares in Fig. 7.3 (ii) and (iii) not congruent to the square in Fig 7.3 (i)?
Why are the large squares in Fig. 7.3 (ii) and (iii) not congruent to the square in Fig 7.3 (i)?
In what condition do two equilateral triangles become congruent to each other?
In what condition do two equilateral triangles become congruent to each other?
Why might it be difficult to replace a refill in a pen by a new one?
Why might it be difficult to replace a refill in a pen by a new one?
Flashcards
Who discovered cells and how?
Who discovered cells and how?
Robert Hooke, using a primitive microscope to observe cells in a cork slice.
Why are cells called the structural and functional unit of life?
Why are cells called the structural and functional unit of life?
They are the building blocks of life, capable of all living functions.
How does the exchange of gases (CO2 and O2) between cells take place?
How does the exchange of gases (CO2 and O2) between cells take place?
From a region of higher concentration to a region of lower concentration.
What is the reason for the accumulation of CO2 inside the cell?
What is the reason for the accumulation of CO2 inside the cell?
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Why does the concentration of O2 decrease inside the cell during respiration?
Why does the concentration of O2 decrease inside the cell during respiration?
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What defines cells as the building blocks of life?
What defines cells as the building blocks of life?
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What is the process in which water moves from a region of high concentration to a region of low concentration through the plasma membrane called?
What is the process in which water moves from a region of high concentration to a region of low concentration through the plasma membrane called?
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Why is the plasma membrane known as a selectively permeable membrane?
Why is the plasma membrane known as a selectively permeable membrane?
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Which organelles contain their own genetic material?
Which organelles contain their own genetic material?
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What is the smallest unit of life capable of all living functions?
What is the smallest unit of life capable of all living functions?
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Why are lysosomes sometimes referred to as 'suicide bags'?
Why are lysosomes sometimes referred to as 'suicide bags'?
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Where are proteins synthesized inside the cell?
Where are proteins synthesized inside the cell?
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What do we call the movement of water from a region of high concentration to a region of low concentration?
What do we call the movement of water from a region of high concentration to a region of low concentration?
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What happens if the organization of a cell is destroyed due to some physical or chemical influence?
What happens if the organization of a cell is destroyed due to some physical or chemical influence?
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What is movement of water through a selectively permeable membrane known as?
What is movement of water through a selectively permeable membrane known as?
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What are the two organelles that contain their own genetic material?
What are the two organelles that contain their own genetic material?
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What is a triangle?
What is a triangle?
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What does 'congruent' mean?
What does 'congruent' mean?
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How many sides does a triangle have?
How many sides does a triangle have?
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In triangle ABC, what do AB, BC, and CA represent?
In triangle ABC, what do AB, BC, and CA represent?
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What will you study in detail in this chapter?
What will you study in detail in this chapter?
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What does the prefix 'tri-' mean?
What does the prefix 'tri-' mean?
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What is the condition for two triangles to be congruent?
What is the condition for two triangles to be congruent?
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Why is the concept of congruence used in making casts for ice trays?
Why is the concept of congruence used in making casts for ice trays?
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What is the significance of congruent refills for a pen?
What is the significance of congruent refills for a pen?
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What do we observe when two circles of the same radius are placed on each other?
What do we observe when two circles of the same radius are placed on each other?
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Why are the large squares in Fig. 7.3 (ii) and (iii) not congruent to the square in Fig 7.3 (i)?
Why are the large squares in Fig. 7.3 (ii) and (iii) not congruent to the square in Fig 7.3 (i)?
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In what condition do two equilateral triangles become congruent to each other?
In what condition do two equilateral triangles become congruent to each other?
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Why might it be difficult to replace a refill in a pen by a new one?
Why might it be difficult to replace a refill in a pen by a new one?
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