Fill in the blank: Robert Hooke looked at a thin slice of cork and saw it was made of many small, empty spaces. He called each small space a _______.
  • cell
  • atom
  • molecule
  • fiber
Who is known as the Father of Microbiology?
  • Antonie van Leeuwenhoek
  • Louis Pasteur
  • Robert Koch
  • Edward Jenner
Robert Hooke was the first person to clearly see and describe living things like bacteria and blood cells.
  • True
  • False
What is the basic unit of life according to the passage?
  • Cell
  • Atom
  • Tissue
  • Organ
Observe the slide under a microscope (A simple foldable paper microscope will suffice). Compare it with Fig. 2.3c. Which of the following similarities can be found in Fig. 2.3c and Fig. 2.3d?
  • Both figures show similar cell shapes and arrangements.
  • Both figures display different cell types.
  • Fig. 2.3c shows more cells than Fig. 2.3d.
  • Fig. 2.3d has a different color than Fig. 2.3c.
What do you find that all plants are made up of?
  • All plants are made up of cells.
  • All plants are made up of rocks.
  • All plants are made up of plastic.
  • All plants are made up of metal.
What do you think the body of an animal is made of?
  • The body of an animal is made up of cells.
  • The body of an animal is made up of rocks.
  • The body of an animal is made up of plastic.
  • The body of an animal is made up of metal.
Which stain is used to give a pinkish colour to the onion peel cells for better observation under the microscope?
  • Safranin (red-coloured stain) is used.
  • Methylene blue is used.
  • Crystal violet is used.
  • Iodine solution is used.
Identify the parts labeled in Fig. 2.3c.
  • Cell wall, Cell membrane, Nucleus, Cytoplasm are the parts labeled in Fig. 2.3c.
  • Cell wall, Cell membrane, Mitochondria, Cytoplasm are the parts labeled in Fig. 2.3c.
  • Cell wall, Cell membrane, Chloroplast, Cytoplasm are the parts labeled in Fig. 2.3c.
  • Cell wall, Cell membrane, Ribosome, Cytoplasm are the parts labeled in Fig. 2.3c.
The similarities and differences observed between the cells of onion peel in Activity 2.2 and human cheek cells in Activity 2.3 are:
  • Both have a cell membrane, but only onion peel cells have a cell wall.
  • Both have a cell wall, but only human cheek cells have a nucleus.
  • Both lack a nucleus, but only onion peel cells have a cell membrane.
  • Both have a cell wall and a nucleus.
The cell membrane, cytoplasm, and nucleus are important in a cell because they perform essential functions for the maintenance of life. Which of the following best describes their roles?
  • They regulate entry and exit of substances, provide a medium for chemical reactions, and control cellular activities.
  • They store energy, produce proteins, and transport waste.
  • They create cell walls, synthesize DNA, and break down nutrients.
  • They generate electrical impulses, absorb sunlight, and produce hormones.
Fill in the blank: The outer layer of a human cheek cell is called the ________.
  • cell membrane
  • nucleus
  • cytoplasm
  • mitochondria
Fill in the blank: The space between the cell membrane and nucleus is filled with ________.
  • cytoplasm
  • mitochondria
  • ribosomes
  • nucleolus
Which of the following is NOT a basic part of a human cheek cell?
  • Cell membrane
  • Cytoplasm
  • Nucleus
  • Cell wall
Most of the life processes take place within the cytoplasm.
  • True
  • False
Fill in the blank: The green color in plant cells is due to the presence of _________.
  • chloroplasts
  • mitochondria
  • ribosomes
  • nucleus
Which part is present in plant cells but not in animal cells?
  • A) Cell wall
  • B) Nucleus
  • C) Cytoplasm
  • D) Mitochondria
Muscle cells and nerve cells have both similarities and differences. Which of the following best describes these similarities and differences?
  • Both muscle cells and nerve cells are specialized cells, but muscle cells contract while nerve cells transmit signals.
  • Muscle cells and nerve cells are identical in structure and function.
  • Muscle cells transmit electrical signals, while nerve cells contract to produce movement.
  • Neither muscle cells nor nerve cells are specialized for any function.
Vacuoles are usually large in plant cells and small or absent in animal cells.
  • True
  • False
Cells look different from each other because their shape and structure relate to their function.
  • Cells look different because their shape and structure relate to their function.
  • Cells look different because they all perform the same function.
  • Cells look different because they are randomly shaped.
  • Cells look different because they do not have any function.
What is the basic unit of life in the body of a living organism? Fill in the blank: The basic unit of life is a _______.
  • cell
  • atom
  • tissue
  • organ
Fill in the blank: A group of similar cells forms a type of _______.
  • tissue
  • organ
  • atom
  • molecule
Fill in the blank: Different tissues are organised to form an _______.
  • organ
  • cell
  • atom
  • molecule
Fill in the blank: Several organs work together to form an _______ that performs a major function of the body.
  • organ system
  • cell
  • tissue
  • molecule
Fill in the blank: All the organ systems together make up a complete _______.
  • organism
  • cell
  • tissue
  • organ
What do you call living beings made up of many cells? Fill in the blank: Such living beings are called _______.
  • multicellular organisms
  • unicellular organisms
  • protozoa
  • bacteria
What is the largest known cell in the living world?
  • Human egg cell
  • Ostrich egg yolk
  • Amoeba
  • Bacterial cell
What are such organisms called?
  • Microorganisms
  • Plants
  • Animals
  • Fungi
What Are Microorganisms? Some microorganisms, like bacteria and Amoeba, are made of just one cell (unicellular). Others, like some fungi and algae, have many cells (multicellular). Which of the following is unicellular?
  • A) Amoeba
  • B) Fungi
  • C) Algae
  • D) Human
To observe the cells of a microorganism, what instrument do scientists use to magnify their size and make them visible?
  • Microscope
  • Telescope
  • Stethoscope
  • Barometer
  • Thermometer
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0