Cell and Systems Review 1
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Questions and Answers

Match the following vocabulary words with the correct definitions.

Field of view = The area in a microscope you can see Magnification = The amount that an image appears to be enlarged Multicellular = Organism made of many specialized cells working together Unicellular = Organism composed of only one cell Osmosis = Diffusion of water across a semipermeable membrane Semipermeable = Allows some substances through Cell specialization = A cell that has differentiated and has a design related to its function Response = A reaction to something (such as pulling your hand away from heat) Stimuli = An event that produces a response in living tissue

On the blanks to the left of each statement, write the characteristic of life referred to in the statement.

Need Energy = A tomato plant requires sunlight in order to survive Growth = A bean seed develops into a bean plant Reproduction = A bean plant produces a bean seed Produces Waste = A person breathes out carbon dioxide Adapt and respond = You become thirsty after exercise Need energy = A caterpillar eats the leaves of a plant Made of cells = A rabbit is multicellular

What is the correct order when making a wet mount slide of a layer of cells? Place a number (1 being the first step and so on) above each statement in the correct order.

  • Add a drop of water or stain (correct)
  • Take a thin layer of cells (correct)
  • Lay them on the slide, make sure it lies flat (correct)
  • Gently lower the coverslip (correct)

What is the name of the part of the microscope that you look through to view the specimen?

<p>Eyepiece</p> Signup and view all the answers

When you switch from low power to high power on a microscope, what happens to the magnification (detail you can see)?

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

When you switch from low power to high power on a microscope, what happens to the field of view (area you can see)?

<p>Decreases</p> Signup and view all the answers

What is the diameter of the field of view in millimeters under low power?

<p>1.5</p> Signup and view all the answers

What is the diameter of the field of view under low power in micrometers?

<p>1500</p> Signup and view all the answers

If the eyepiece magnifies an image 10 times and the high-power objective magnifies 40 times, what is the total magnification?

<p>400</p> Signup and view all the answers

Match the microscope part with its purpose.

<p>Coarse focus = Used to focus the image on low power Revolving nosepiece = Used to change the magnification (eg. from low to medium power) Eyepiece = The part you look through; usually magnifies the image by 10 X. Stage = Where you place the slide for viewing Arm and base = The two parts you carry the microscope with Diaphragm = Round disc that changes the amount of light to the slide</p> Signup and view all the answers

Which of the following is NOT part of cell theory?

<p>Every cell works alongside other cells to form more complicated structures. (D)</p> Signup and view all the answers

What is the function of the nucleus?

<p>Brain</p> Signup and view all the answers

What is the function of the cell wall?

<p>Rigid support</p> Signup and view all the answers

What is the function of the cell membrane?

<p>Gatekeeper</p> Signup and view all the answers

What is the function of the chloroplast?

<p>Converts energy to food</p> Signup and view all the answers

What is the function of the mitochondria?

<p>Converts food to energy</p> Signup and view all the answers

What is the function of the vacuole?

<p>Storage</p> Signup and view all the answers

Match the number in the diagram with the correct structure.

<p>Nucleus = 2 Cell membrane = 3 Vacuole = 6 Cell wall = 5 Chloroplast = 7 Mitochondria = 4 Cytoplasm = 1</p> Signup and view all the answers

Muscle cells use lots of energy to move the body. Which organelle below would you expect to find lots of in muscle cells?

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

Root cells in plants cannot capture sunlight for photosynthesis. What organelle, usually found in plant cells, would NOT be in root cells?

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

Match the cell part with its analogous city component.

<p>Nucleus = City hall Vacuole = Storage tanks Cell membrane = City gates Chloroplast = Power plant Mitochondria = Food processing plant</p> Signup and view all the answers

The diagram below shows the movement of water in/out of cells in different solutions. Which concentration of water is higher in the solution where the cells are shrinking?

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

The egg in the sugar solution would shrink.

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

Why did the egg placed in water increase in mass?

<p>The concentration of water was higher outside the egg, so water moved into the egg.</p> Signup and view all the answers

What kind of membrane does the egg have?

<p>Semipermeable</p> Signup and view all the answers

Which of the following is NOT part of the levels of organization in the cell?

<p>Macromolecule (E)</p> Signup and view all the answers

What type of cell protects the body from foreign invaders?

<p>Epithelial (Skin) Cell (E)</p> Signup and view all the answers

What type of cell sends and receives messages?

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

What type of cell provides rigid support for the body?

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

What trend is shown in the graph of the relationship between Simon's heart rate and breathing rate?

<p>As his rate of heartbeat increases, his breathing rate also increases (D)</p> Signup and view all the answers

Flashcards

Field of View

The area visible through a microscope.

Magnification

The amount that an image appears enlarged.

Multicellular

An organism made of many specialized cells working together.

Unicellular

An organism composed of only one cell.

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Semipermeable membrane

A membrane that allows some substances to pass through but not others.

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Osmosis

The process of water moving across a semipermeable membrane from an area of high concentration to an area of low concentration.

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Cell Specialization

A cell that has specialized in a particular function.

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Response

A reaction to a stimulus.

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Stimuli

An event that produces a response in living tissue.

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Nucleus

The organelle that contains the genetic material (DNA) of a cell.

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Cell Wall

The rigid outer layer that supports and protects plant cells.

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Cell Membrane

The thin outer layer of a cell that regulates what enters and leaves the cell.

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Chloroplast

The organelle that captures sunlight and converts it into food (glucose).

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Cytoplasm

The jelly-like substance that fills the cell and holds all the organelles.

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Mitochondria

The organelle that breaks down food to release energy (ATP).

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Vacuole

A large sac that stores water, food, and wastes.

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Magnification

What happens to the magnification when you switch from low power to high power on a microscope?

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Field of View

What happens to the field of view when you switch from low power to high power on a microscope?

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Tissue

A group of similar cells working together.

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Organ

A group of different tissues working together to perform a specific function in the body.

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Organ System

Several organs working together to perform a specific function in your body.

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Organism

A living thing that may be unicellular or multicellular.

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Levels of Organization

The levels of organization in the cell from smallest to largest.

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Eyepiece

The part of the microscope you look through; usually magnifies the image by 10X.

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Revolving Nosepiece

The part that holds the objective lenses and allows you to rotate between them.

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Objective Lenses

The lenses that magnify the specimen and are attached to the nosepiece.

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Diaphragm

A round disc that changes the amount of light that shines on the slide.

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Stage

The stage that holds the slide with the specimen you are looking at.

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Coarse Adjustment Knob

Used to focus the image on low power.

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Fine Adjustment Knob

Used to finely adjust the focus of the image.

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Study Notes

Cell and Systems Review 1

  • Vocabulary Matching:

  • Field of view: The area in a microscope that can be seen.

  • Magnification: The amount an image appears enlarged.

  • Multicellular: An organism composed of many specialized cells.

  • Unicellular: An organism composed of only one cell.

  • Osmosis: The diffusion of water across a semipermeable membrane.

  • Semipermeable: Allows some substances to pass through.

  • Cell Specialization: A cell's structure adapted to its function.

  • Response: A reaction to a stimulus.

  • Stimuli: Events that produce a response.

  • Characteristics of Life (GRAPE-C):

  • Growth: Development from a smaller to larger size.

  • Reproduction: Producing new organisms.

  • Adapt and respond: Changing behavior in reaction to environment.

  • Produces waste: Excretion of metabolic byproducts.

  • Energy: Requires energy to carry out life processes.

  • Cells: Composed of one or more cells.

  • Wet Mount Slide Procedure:

  • Add water drop to slide

  • Place thin layer of cells

  • Place slide on flat surface

  • Carefully lower coverslip

  • Microscope Parts:

  • Eyepiece: Where you look through

  • Nosepiece: Rotating part to switch objectives

  • Objective Lens: Different powers of magnification

  • Stage Clips: Hold the slide in place

  • Stage: Platform for the slide

  • Light Source: Illuminates the specimen

  • Arm: Supporting part of the microscope

  • Base: Supports the entire microscope

  • Diaphragm: Controls the light passing through

  • Coarse Adjustment Knob: Focus the image in low power

  • Fine Adjustment Knob: Fine tune focus

  • Microscope Magnification:

  • Switching from low to high power increases magnification but reduces the field of view.

  • The diameter of the field of view decreases as magnification increases.

  • Eyepiece magnification times objective lens magnification equals total magnification.

  • Cell Theory:

  • The cell theory states that:

  • All living things are made of cells.

  • Cells comes from other cells.

  • Cells are the functional unit of life. A cell can carry out all functions required for life.

  • Cell Organelles and Function (Refer to diagram for specifics):

  • Nucleus: The control center.

  • Vacuole: Storage.

  • Cell Membrane: The gatekeeper, controls what enters and exits the cell.

  • Chloroplast: Used for photosynthesis (in plant cells)

  • Mitochondria: Converts food to energy

  • Cytoplasm: Holds everything in place inside cell

  • Cell Wall: Rigid support for the cell.

  • Levels of Organization:

  • Cell, Tissue, Organ, Organ System, Organism

  • Organelle in Muscle Cells:

  • Mitochondria are required for energy use.

  • Organelle in Root Cells:

  • Chloroplasts are not necessary as roots do not undergo photosynthesis.

  • Cell Function Related to City:

  • Nucleus (City Hall)

  • Vacuoles (Storage Tanks)

  • Cell membrane (City Gates)

  • Chloroplasts (Power Plant)

  • Mitochondria (Food Processing Plant)

  • Osmosis:

  • Water moves from an area of high water concentration to an area of low water concentration

  • If water concentration outside the cell is higher the cell will expand

  • If water concentration outside the cell is lower the cell will shrink

  • Manipulated & Responding Variables:

  • Manipulated Variable: The factor that is changed in an experiment.

  • Responding Variable: The factor that is measured.

  • Cell in Solution Change:

  • A cell placed in a high sugar solution will shrink.

  • A cell placed in a tap water solution will swell up.

  • Experimental Note:

  • Experimental conditions, particularly if there is a change in weight, should be noted.

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Description

Test your knowledge on key vocabulary and characteristics of life with this quiz. From understanding the principles of cell specialization to the wet mount slide procedure, this review covers essential concepts in biology. Perfect for students preparing for their biology assessments.

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