Living Organisms Flashcards
How can microscope see cells?
Has a light behind the stage and has a high magnification.
If the eyepiece was x 10 and the object lens was x40
Total magnification = 10 x 40 = x400 (400 times)
What does a cell membrane do?
Controls the movement of the substances into and out of the cell.
Found in plant and animal cell.
What does Cytoplasm do?
Jelly like substance, where chemical reactions happen
What does a nucleus do?
Carries genetic information and controls whathappens inside the cell
What does the mitochondria do?
Where the most respiration happen
What does a vacuole do?
Contains the cell sap which keeps the cell firm
What does the cell wall do?
Made of a tough substance called cellulose, which supports the cell.
What does red blood cell do?
Carries oxygen, contains haemoglobin
What does a nerve cell do?
Ito carry the nerve impulse to different part of the body
What does the female reproduction cell do?
Joins with male cell and then provides food and water for the new cell that has been formed
What does a male reproduction cell do?
To reach the female cell and join it
What does a root hair cell do?
To absorb water a minerals
What does a leaf cell do?
To absorb sunlight for photosynthesis
What is tissue?
Animal and plant cells can for tissue, like mussel tissue.
A living tissue is made from a group of cells with similar structure.
Eg: muscles, lining of intestine and lungs.
What is an organ?
An organ is made on different tissues that has joined together to do a particular job.
Eg: heart, lung, stomach, brain, leaf and root.
What is an organ system?
An organ system is mad up of different organs, which all work to get her to do one particular job.
Eg: circulatory system, reproductive system and digestive system.
How many bones is a Skelton made up of?
Ove 200 bones
What is the function of a Skelton?
To support the body
To protect the vital organs
To help the body move
To make blood cells
Name the bones from top to bottom
Skull, collarbone, breast bone, humerus, rib cage, spine, radius, ulna, femur, knee cap, Tina and fibula.
What does the Skelton protect?
The skull protects the brain
The rib age protects the heart and the lungs
The backbone protects the spinal cord.
What does white blood cells do?
Destroys harmful microorganism in your body.
What are joints and what do they do?
Joint are bones linked together, allows different body parts of the Skelton move.
What are synovial joints
Joint that have a tough, smooth substance called cartilage to stop the joint from wearing away this is kept slippery by a liquid Calle synovial fluid , tough ligaments join the bone to stop it from falling apart.
