Gr 9 NATURAL SCIENCES: CH 1.1 SUM Cells as basic units of life
150 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the diaphragm in a microscope?

  • To adjust the focus of the image
  • To carry the microscope with one hand
  • To control the amount of light reaching the specimen (correct)
  • To clean the lenses with proper lens paper

What type of mount is used for observing living organisms and aquatic samples?

  • Staining
  • Smear
  • Wet mount (correct)
  • Dry mount

What is the term for the process by which cells specialize to perform distinct functions?

  • Organization
  • Differentiation (correct)
  • Specialization
  • Stem cell formation

What type of cells can become any cell type in the body?

<p>Embryonic stem cells (C)</p> Signup and view all the answers

What is the term for organisms composed of many cells that specialize and work together?

<p>Multicellular organisms (B)</p> Signup and view all the answers

What is the primary function of the stage in a microscope?

<p>To place the slide (A)</p> Signup and view all the answers

What type of cells are found in tissues like bone marrow and are essential for tissue maintenance and repair?

<p>Adult stem cells (C)</p> Signup and view all the answers

What type of mount is used for observing hair, feathers, pollen grains, or dust?

<p>Dry mount (D)</p> Signup and view all the answers

What is the term for the process of preparing specimens for microscopic observation?

<p>Mounting (D)</p> Signup and view all the answers

What is the basic unit of life in multicellular organisms?

<p>Cells (A)</p> Signup and view all the answers

What is the main function of the stroma in a plant cell?

<p>Converting carbon dioxide into glucose (C)</p> Signup and view all the answers

What is the function of chlorophyll in a plant cell?

<p>Capturing light energy (C)</p> Signup and view all the answers

What is the main function of vacuoles in a plant cell?

<p>Storing nutrients (B)</p> Signup and view all the answers

What is the primary component of the plant cell wall?

<p>Cellulose (C)</p> Signup and view all the answers

What is the function of the cell wall in plant cells?

<p>To provide structural support and protection (C)</p> Signup and view all the answers

What is the term for the solution of water, enzymes, ions, salts, and other substances found in the central vacuole?

<p>Cell sap (A)</p> Signup and view all the answers

What organelles are responsible for photosynthesis in plant cells?

<p>Chloroplasts (C)</p> Signup and view all the answers

What is the primary function of plasmodesmata in plant cells?

<p>Communication and transport between adjacent plant cells (A)</p> Signup and view all the answers

What is the function of chlorophyll in chloroplasts?

<p>To absorb light energy (C)</p> Signup and view all the answers

Which organelle is responsible for breaking down cellular waste and debris in animal cells?

<p>Lysosome (D)</p> Signup and view all the answers

What is the structure within chloroplasts where light-dependent reactions occur?

<p>Thylakoids (C)</p> Signup and view all the answers

What is the primary function of centrioles in animal cells?

<p>Organizing the mitotic spindle during cell division (C)</p> Signup and view all the answers

What is the primary energy storage form in plant cells?

<p>Starch (D)</p> Signup and view all the answers

What is the name of the pigment that absorbs light energy in chloroplasts?

<p>Chlorophyll (A)</p> Signup and view all the answers

What is the main difference between plant and animal cells?

<p>Plant cells have a cell wall, while animal cells do not (A)</p> Signup and view all the answers

What is the primary function of the eyepiece (ocular lens) in a light microscope?

<p>Typically magnifies 10x (D)</p> Signup and view all the answers

What is the primary difference between light microscopes and electron microscopes?

<p>Electron microscopes are more powerful (B)</p> Signup and view all the answers

Which of the following organisms have cell walls?

<p>Plants, bacteria, and fungi (C)</p> Signup and view all the answers

What is the function of grana in chloroplasts?

<p>To increase the surface area for light-dependent reactions (B)</p> Signup and view all the answers

What is the purpose of the cell wall in regulating the entry and exit of substances?

<p>To work in conjunction with the cell membrane to control the internal environment (C)</p> Signup and view all the answers

What is an organism?

<p>A complete living entity capable of performing all life processes (C)</p> Signup and view all the answers

What is the function of the coarse focus knob on a microscope?

<p>To bring the specimen into general focus (D)</p> Signup and view all the answers

What is the purpose of labeling the different structures and organelles when observing cells under a microscope?

<p>To make detailed drawings of the observed cells (B)</p> Signup and view all the answers

What is the first step in preparing a microscope for observation?

<p>Ensure the microscope is clean and properly set up (A)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ system (B)</p> Signup and view all the answers

What is the purpose of using a cover slip when preparing a slide for microscopy?

<p>To avoid air bubbles (A)</p> Signup and view all the answers

What is the term for the basic structural unit of an organism?

<p>Cell (C)</p> Signup and view all the answers

What is the purpose of observing cells under a microscope?

<p>To understand the complexity and efficiency of living organisms (C)</p> Signup and view all the answers

What is the term for a type of tissue found in the digestive system?

<p>Epithelial tissue (A)</p> Signup and view all the answers

What is the purpose of the fine focus knob on a microscope?

<p>To sharpen the image of the specimen (C)</p> Signup and view all the answers

What is the primary component of the plant cell wall that provides rigidity and strength?

<p>Cellulose (A)</p> Signup and view all the answers

What is the function of thylakoids in chloroplasts?

<p>Light-dependent reactions of photosynthesis (A)</p> Signup and view all the answers

Which organelles are responsible for regulating the entry and exit of substances in plant cells?

<p>Cell membrane and cell wall (C)</p> Signup and view all the answers

What is the purpose of the cell wall in plant cells?

<p>To provide structural support and protection (C)</p> Signup and view all the answers

What is the function of chlorophyll in chloroplasts?

<p>To absorb light energy (C)</p> Signup and view all the answers

Which of the following cells have cell walls?

<p>Only plant cells (C)</p> Signup and view all the answers

What is the function of grana in chloroplasts?

<p>To regulate light-dependent reactions (B)</p> Signup and view all the answers

What is the main difference between plant and animal cells?

<p>Plant cells have cell walls, while animal cells do not (C)</p> Signup and view all the answers

What is the purpose of chloroplasts in plant cells?

<p>To convert light energy into chemical energy (B)</p> Signup and view all the answers

What is the function of the cell wall in providing structural support to plant cells?

<p>It maintains cell shape and provides rigidity (C)</p> Signup and view all the answers

What is the main function of the stroma in a plant cell?

<p>To convert carbon dioxide into glucose (B)</p> Signup and view all the answers

What is the primary function of vacuoles in plant cells?

<p>To store nutrients and waste products (A)</p> Signup and view all the answers

What is the main difference between light microscopes and electron microscopes?

<p>Light microscopes have lower magnification, while electron microscopes have higher magnification (D)</p> Signup and view all the answers

Which organelle is responsible for breaking down waste materials in plant cells?

<p>Vacuoles (A)</p> Signup and view all the answers

What is the primary function of centrioles in animal cells?

<p>To organize the mitotic spindle during cell division (B)</p> Signup and view all the answers

What is the primary component of the plant cell wall?

<p>Cellulose (B)</p> Signup and view all the answers

What is the function of plasmodesmata in plant cells?

<p>To allow communication and transport between adjacent plant cells (A)</p> Signup and view all the answers

What is the primary energy storage form in animal cells?

<p>Glycogen (D)</p> Signup and view all the answers

What is the main function of the eyepiece (ocular lens) in a light microscope?

<p>To magnify the image (B)</p> Signup and view all the answers

What is the primary function of peroxisomes in plant cells?

<p>To break down fatty acids and detoxify harmful substances (B)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ system (A)</p> Signup and view all the answers

What is the term for a complete living entity capable of performing all life processes?

<p>Organism (A)</p> Signup and view all the answers

What is the term for the study of the structure, function, and behavior of living organisms?

<p>Biology (B)</p> Signup and view all the answers

What is the purpose of observing cells under a microscope?

<p>To understand how cells are organized and function within tissues, organs, and systems (A)</p> Signup and view all the answers

What is the purpose of labeling the different structures and organelles when observing cells under a microscope?

<p>To understand the function of each structure and organelle (A)</p> Signup and view all the answers

What is the first step in preparing a microscope for observation?

<p>Ensure the microscope is clean and properly set up (C)</p> Signup and view all the answers

What is the purpose of using a cover slip when preparing a slide for microscopy?

<p>To hold the specimen in place (A)</p> Signup and view all the answers

What is the term for the basic structural unit of an organism?

<p>Cell (C)</p> Signup and view all the answers

What is the purpose of the coarse focus knob on a microscope?

<p>To bring the specimen into general focus (D)</p> Signup and view all the answers

What is the term for the solution of water, enzymes, ions, salts, and other substances found in the central vacuole?

<p>Vacuolar sap (C)</p> Signup and view all the answers

What is the primary function of the objective lenses in a microscope?

<p>To provide different magnifications of the specimen (C)</p> Signup and view all the answers

What is the purpose of staining in specimen preparation?

<p>To enhance contrast and visibility of structures (C)</p> Signup and view all the answers

What is the term for cells that are capable of dividing and differentiating into various specialized cells?

<p>Stem cells (A)</p> Signup and view all the answers

What is the level of organization that consists of groups of similar cells working together to perform a specific function?

<p>Tissues (C)</p> Signup and view all the answers

What is the purpose of the diaphragm in a microscope?

<p>To control the amount of light reaching the specimen (C)</p> Signup and view all the answers

What is the term for organisms that consist of a single cell that performs all life functions?

<p>Unicellular organisms (B)</p> Signup and view all the answers

What is the purpose of carrying the microscope with one hand supporting the base and the other holding the arm?

<p>To prevent damage to the microscope (B)</p> Signup and view all the answers

What is the term for the process of preparing specimens for microscopic observation?

<p>Mounting (C)</p> Signup and view all the answers

What is the primary function of the coarse focus knob on a microscope?

<p>To focus the image quickly (A)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Systems (A)</p> Signup and view all the answers

What is the primary function of the objective lenses in a microscope?

<p>To change the magnification of the image (D)</p> Signup and view all the answers

What is the purpose of using a wet mount in preparing specimens for microscopic observation?

<p>To observe living organisms and aquatic samples (D)</p> Signup and view all the answers

What is the primary function of stem cells in multicellular organisms?

<p>To divide and differentiate into various specialized cells (D)</p> Signup and view all the answers

What is the primary difference between unicellular and multicellular organisms?

<p>The number of cells in the organism (D)</p> Signup and view all the answers

What is the purpose of focusing smoothly and slowly when using a microscope?

<p>To avoid damaging the lenses (B)</p> Signup and view all the answers

What is the primary function of the diaphragm in a microscope?

<p>To control the amount of light reaching the specimen (B)</p> Signup and view all the answers

What is the primary function of epithelial cells in multicellular organisms?

<p>To protect the body and cover surfaces (A)</p> Signup and view all the answers

What is the term for the organization of cells into tissues, organs, and systems in multicellular organisms?

<p>Hierarchy of organization (B)</p> Signup and view all the answers

What is the primary function of nerve cells in multicellular organisms?

<p>To transmit electrical signals (A)</p> Signup and view all the answers

What is the purpose of storing the microscope with the lowest objective lens in place after use?

<p>To protect the lenses from damage (B)</p> Signup and view all the answers

What is the primary function of the cell wall in plant cells, besides providing structural support?

<p>Regulating the entry and exit of substances (C)</p> Signup and view all the answers

Which of the following is a characteristic unique to plant cell walls?

<p>Made of cellulose (B)</p> Signup and view all the answers

What is the role of thylakoids in chloroplasts?

<p>Converting light energy into chemical energy (D)</p> Signup and view all the answers

What is the primary function of chloroplasts in plant cells?

<p>Converting light energy into chemical energy (D)</p> Signup and view all the answers

What is the primary component of the plant cell wall that provides rigidity and strength?

<p>Cellulose (A)</p> Signup and view all the answers

Which of the following organelles is responsible for photosynthesis in plant cells?

<p>Chloroplasts (A)</p> Signup and view all the answers

What is the function of the cell wall in protecting plant cells?

<p>Protecting against mechanical damage and pathogenic attack (B)</p> Signup and view all the answers

What is the primary difference between plant and animal cells?

<p>Presence of a cell wall (B)</p> Signup and view all the answers

Which of the following is a characteristic of plant cells?

<p>Presence of chloroplasts (D)</p> Signup and view all the answers

What is the function of grana in chloroplasts?

<p>Converting light energy into chemical energy (A)</p> Signup and view all the answers

What is the main function of the stroma in a plant cell?

<p>To convert carbon dioxide into glucose (B)</p> Signup and view all the answers

Which organelle is responsible for breaking down cellular waste and debris in plant cells?

<p>Vacuoles (D)</p> Signup and view all the answers

What is the primary function of plasmodesmata in plant cells?

<p>To facilitate communication and transport between adjacent plant cells (B)</p> Signup and view all the answers

What is the primary energy storage form in animal cells?

<p>Glycogen (A)</p> Signup and view all the answers

Which type of microscope is suitable for viewing the ultrastructure of cells and tissues?

<p>Electron microscope (A)</p> Signup and view all the answers

What is the primary function of centrioles in animal cells?

<p>To organize the mitotic spindle during cell division (C)</p> Signup and view all the answers

What is the main difference between plant and animal cells?

<p>All of the above (D)</p> Signup and view all the answers

What is the function of the eyepiece (ocular lens) in a light microscope?

<p>To magnify the image (C)</p> Signup and view all the answers

What is the primary function of peroxisomes in both plant and animal cells?

<p>To break down fatty acids and detoxify harmful substances (A)</p> Signup and view all the answers

What is the primary function of the vacuole in plant cells?

<p>To store nutrients and waste products (D)</p> Signup and view all the answers

What is the primary function of the epithelial cells in the digestive system?

<p>To facilitate the absorption of nutrients (B)</p> Signup and view all the answers

What is the term for the process by which cells organize to form tissues?

<p>Histogenesis (B)</p> Signup and view all the answers

What is the primary function of the muscle cells in the digestive system?

<p>To regulate the movement of food through the digestive system (D)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ system (C)</p> Signup and view all the answers

What is the primary function of the liver in the digestive system?

<p>To store and filter blood (B)</p> Signup and view all the answers

What is the term for the process by which cells become specialized to perform distinct functions?

<p>Differentiation (B)</p> Signup and view all the answers

What is the primary function of the pancreas in the digestive system?

<p>To produce digestive enzymes (B)</p> Signup and view all the answers

What is the term for the basic structural unit of an organism?

<p>Cell (D)</p> Signup and view all the answers

What is the primary function of the stomach in the digestive system?

<p>To break down food into smaller molecules (B)</p> Signup and view all the answers

What is the term for the process of observing cells under a microscope?

<p>Microscopy (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of an organism?

<p>Being a single cell (B)</p> Signup and view all the answers

What is the purpose of using the coarse focus knob on a microscope?

<p>To locate the specimen under the microscope (D)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ system (B)</p> Signup and view all the answers

What is the primary purpose of observing cells under a microscope?

<p>To understand the complexity of living organisms (A)</p> Signup and view all the answers

What is the primary function of the fine focus knob on a microscope?

<p>To sharpen the image of the specimen (D)</p> Signup and view all the answers

What is the purpose of labeling the different structures and organelles when observing cells under a microscope?

<p>To understand the function of each structure and organelle (B)</p> Signup and view all the answers

What is the term for the process of preparing specimens for microscopic observation?

<p>Mounting (A)</p> Signup and view all the answers

What is the primary function of the cover slip when preparing a slide for microscopy?

<p>To avoid air bubbles when adding the specimen (A)</p> Signup and view all the answers

What is the term for the basic structural unit of an organism?

<p>Cell (B)</p> Signup and view all the answers

What is the purpose of adjusting the light source for optimal illumination when observing cells under a microscope?

<p>To optimize the visibility of the specimen (D)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ system (A)</p> Signup and view all the answers

What is the purpose of observing cells under a microscope?

<p>To understand how cells are organized and function within tissues, organs, and systems (C)</p> Signup and view all the answers

What is the basic structural unit of an organism?

<p>Cell (C)</p> Signup and view all the answers

What is the purpose of labeling the different structures and organelles when observing cells under a microscope?

<p>To identify the different parts of the cell (A)</p> Signup and view all the answers

What is the first step in preparing a microscope for observation?

<p>Ensure the microscope is clean and properly set up (A)</p> Signup and view all the answers

What type of tissue is found in the digestive system?

<p>Epithelial tissue (A)</p> Signup and view all the answers

What is the purpose of the fine focus knob on a microscope?

<p>To sharpen the image (A)</p> Signup and view all the answers

What is the term for a complete living entity capable of performing all life processes?

<p>Organism (B)</p> Signup and view all the answers

What is the purpose of using a cover slip when preparing a slide for microscopy?

<p>To avoid air bubbles (B)</p> Signup and view all the answers

What is the purpose of observing cells under a microscope?

<p>To understand how cells are organized and function within tissues, organs, and systems (D)</p> Signup and view all the answers

What is the basic unit of life in multicellular organisms?

<p>Cell (D)</p> Signup and view all the answers

What is the term for a group of organs that work together to perform complex functions?

<p>Organ System (A)</p> Signup and view all the answers

What is the purpose of observing cells under a microscope?

<p>To gain insight into the complexity and efficiency of living organisms (C)</p> Signup and view all the answers

What is the term for a complete living entity capable of performing all life processes?

<p>Organism (A)</p> Signup and view all the answers

What is the purpose of labeling the different structures and organelles when observing cells under a microscope?

<p>To understand the structure and function of cells (B)</p> Signup and view all the answers

What is the term for the sequence of steps to observe cells under a microscope?

<p>Practical Activity (B)</p> Signup and view all the answers

What is the purpose of the cover slip when preparing a slide for microscopy?

<p>To avoid air bubbles (D)</p> Signup and view all the answers

What is the first step in preparing a microscope for observation?

<p>Ensure the microscope is clean and properly set up (C)</p> Signup and view all the answers

What is the purpose of the fine focus knob on a microscope?

<p>To sharpen the image (B)</p> Signup and view all the answers

What is the term for the structural unit of an organism?

<p>Cell (C)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Cell Biology: Animal vs. Plant Cells
10 questions

Cell Biology: Animal vs. Plant Cells

CostEffectiveTopology7403 avatar
CostEffectiveTopology7403
Cell Biology: Animal vs Plant Cells
5 questions
Cell Biology: Animal vs Plant Cells
8 questions
Use Quizgecko on...
Browser
Browser