Cell Structure and Transport- Chapter One

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  • Created by: Ella Lea
  • Created on: 28-04-18 13:05
What are the 2 differnet types of microscope, and what are the differences between them?
Light microscope- has an eyepiece, and is much smaller than an electron microscope, and Electron Microscope- has a screen, and is much more accurate and can magnify more as it's much bigger
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What is the equation for maginifcation?
Magnification= Image/Actual Size (IAM)
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How do you use a light microscope?
First, you plug in the microscope and adjust the stage height. Then you clip the slides on the stage, and turn the microscope on. You then look through the eye piece and adjust the focus so you can see the specimen cleary and in detail.
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Name the components in an Animal Cell.
Cell membrane, mitochondria, nucleus, cytoplasm
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Name the components in a Plant Cell.
Nucleus, cytoplasm, cell membrane, cell wall, chloroplasts, vacuole
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What is the function of the nucleus?
It is the brain of the cell
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What is the function of the cell membrane?
Controls what goes in and out of the cell
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What is the function of the cell wall?
Protects the cell
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What is the function of the mitochondria?
respirartion of the cells occurs here
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What is the function of the vacuole?
Maintains the shape and sap of the cell
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What is the function of the cytoplasm?
Chemical reactions take place here, and contains molecules such as enzymes which are responsible for breaking down waste
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What is the function of the chloroplasts?
Photosythesis occurs here
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What is a eukaryotic cell, and give an example of one?
A cell which contains a nucleus and other organelles . An example of this cell is an animal cell.
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What is a prokaryotic cell, and give an example of one?
Has no organelles. They do not have a membrane-bound nucleus and their DNA is free in the cytoplasm, and an example is a bacterial cell
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What is a specialised cell?
A cell that has a specific job in the body
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Give 3 examples of a specialised cell in the human body.
Red blood cells, white blood cells, sperm cells, nerve cells, muscle cells, etc
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Give an example of a specialised cell in a plant
Root hair cell, leaf cell, palisade cells, epidermal cells, xylem cells, etc
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Why does the xylem cell not contain cytoplasm?
Because it allows a continuous flow of water and dissolved mineral ions.
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Do root hair cells contain chloroplasts?
No as photosnthesis does not take place here
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What is Diffusion?
Diffusion is the spreading out of particles or the movement of particles through the air to where they are at a lower concentration.
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What is meant by the term net movement?
Overall direction, and movement of particles
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What three factors effect diffusion?
Temperature change, concentration gradient, and surface area.
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What is active transport?
Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from th
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Which out of active transport and diffusion require energy?
Active transport
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What is a similarity between diffusion and active transport?
Both involve particles crossing the membrane
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Where does diffusion occur in the body?
In the lungs- alveoli
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What is osmosis?
Water can move across cell membranes because of osmosis. (diffusion in water)
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Card 2

Front

What is the equation for maginifcation?

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Magnification= Image/Actual Size (IAM)

Card 3

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How do you use a light microscope?

Back

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Card 4

Front

Name the components in an Animal Cell.

Back

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Card 5

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Name the components in a Plant Cell.

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