Cells and respiration Flashcards
What waste products do cells need to get rid of?
Carbon dioxide.
What are organisms made up of?
Tiny building blocks known as cells.
What is the cell membrane?
The thin skin around the cell that holds the cell together and also controls what goes in and out of it.
What do you do when you need to see the slide with greater magnification?
You switch to a higher powered objective lens.
What does a group of different tissues come together to make?
An organ.
What is respiration?
The process of releasing energy from glucose.
Where should you place the microscope and why?
Place it near a window or a lamp so the light shines through the hole in the stage.
Give one physical adaptation of an Amoeba.
They have a contractile vacuole to collect excess water and squeeze it out at the cell membrane.
What is a multicellular organism?
Organisms composed of many cells.
Give one physical adaptation of a Euglena.
They have a tail like structure called flagellum that can help them swim.
How should you angle the mirror?
Angle the mirror so the light shines up through the hole in the stage.
Once you have clipped a side onto the stage, what should the slide have?
The objects you want to look at (stuck to it).
What is the difference between anaerobic respiration and aerobic respiration?
Aerobic respiration occurs with oxygen and releases more energy slowly but anaerobic respiration occurs without oxygen and releases less energy but quickly.
What do cells need to survive?
Glucose, water, oxygen and amino acids.
What does the nucleus do?
This controls the activities of the cell.
What does anaerobic respiration produce in microorganisms?
Carbon dioxide and ethanol.
Give two examples of unicellular organisms.
Euglena and Amoeba.
Put organ systems, organs, cells, tissues and organisms in order of size.
Cells –> tissues –> organs –> organ systems –> organisms –>
What substances move into our out of cell by diffusion?
Glucose or oxygen.
What is respiration?
The process of releasing energy from glucose.
what does anaerobic respiration produce in humans
Lactic acid.
What is the cytoplasm?
The gelatinous liquid where most chemical reactions happen.
What is a unicellular organism?
A single celled organism.
What does a group of organs come together to make?
An organ system.
What happens in aerobic respiration?
Glucose and oxygen react to produce carbon dioxide and water.
What do you do after you clip a slide onto the stage
Select the lowest powered objective lens.
What do you do after you select the lowest powered objective lense?
Turn the rough focusing knob to move the objective lens down to just above the slide.
What does a group of similar cells come together to make?
Tissue
What does respiration do for the cell?
It releases energy for the cell.
How can cells be seen?
Through a microscope.
What is the vacuole?
A structure in the cell filled with cell sap that can hold food for later use.
What does a group of similar cells make?
A tissue.
How can you help to make the cell more visible through a microscope.
By staining it using a coloured dye.
Where does aerobic respiration take place?
In the mitcochondria.
What part of the microscope do you clip the side to?
The stage
What is the use of a microscope?
For looking at objects that can’t be seen with the naked eye.
What does a plant cell have that an animal cell does no have?
Cell wall, chloroplasts and vacuole.
What do you do if you need to see the slide with greater magnification?
Switch to a higher powered objective lens.
Where do you carry the microscope by?
Handle
What should you always do with the rough focusing knob?
Always turn the rough focusing knob so that the objective lense is moving away from the slide - so the lens and slide dont crash together.
What is diffusion?
Where a substance moves from an area of high concentration to an area of low concentration.
What is the mitochondria?
The tiny structures in the cell where most reactions for aerobic respiration take place.
What does a group of different tissues make?
An organ.
What is the cell wall?
A rigid outer coating made of cellulose that gives support to the cell.
Explain chloroplasts.
They contain chlorophyll used for photosynthesis. Photosynthesis makes food for the plant.
Name 8 parts of a microscope.
Mirror, stage, handle, eyepiece lens, rough focusing knob, fine focusing knob, body tube, high and low power objective lense
What is it called when anaerobic respiration produces ethanol?
Fermentation.
