Organisms and reactions Flashcards
State the first level of organisation in a multi-cellular organism.
Cells
State one example of an animal tissue
Nervous tissue
where nerve cells work together to transmit messages around the body
State one example of an organ
Heart
pumps blood
State one example of an organ system
Reproductive system
produces sperm and egg cells for the production of new organisms, also where the feats develops
State one example of a multi cellular organism
Humans
State what a bone is
A living tissue which stores white blood cells and red blood cells
What is a skeleton
All bones connect to form the muscular skeletal system.
State four functions of the skeleton
Supports the body
Protects vital organs
Help the body move
Make blood cells
Name the tissue that causes your skeleton to move
Muscles
Name the tissue tat produces red and white blood cells
Bone marrow
State where joints are found
When two or more bones join together.
Name two types of hinge joint
Knee and elbow
State the unit of force
Newton’s
State why muscle is a tissue
Lots of muscle cells work together to cause movement.
Name three groups of muscles in the body used for movement
Triceps- straighten the arm Abdominals- Move the torso to breathe Calf muscles- pull the heel up and point the toes
State what happens to the length of a muscle when it contracts
Short
Name four key components found in an animal cell
Nucleus
Cell membrane
Cytoplasm
Mitochondria
State the function of mitochondria
Where respiration happens. Energy transfers for the organism
Name the cell components that are only found in plant cells
Cell wall
vacuole
chloroplasts
What is found inside a vacuole
Cell sap
Keeps the cell firm
Write down what specialised cell means
A cell that has structural adaptations to carry out a particular job
State the function of a nerve cell
Carrying messages around the body
Name the component, normally found in animal cells, that is missing in a red blood cell.
They have no nucleus
Name two features that help a sperm cell to do its job
Streamline head
Helps swimming
Tail
To propel itself forward
State two features that tell you that a leaf cell comes from a plant, not an animal.
Chloroplasts carry out photosynthesis
Vacuole helps keep the cell firm
Describe what a salt is
When an acid chemically reacts with metal compounds or an acid with metal elements.
Name the salt made when sodium hydroxide reacts with hydrochloric acid
Sodium chloride
and water
State what an element is
A substance that only contains one type of atom.
State what the periodic table is
It lists and groups elements together
Describe six properties of a typical non-metal element
Brittle (breaks easily) Dull Poor conductor of heat Poor conductor of electricity Low density (light for its size) Low melting point
Describe three physical properties of a typical metal
Malleable
Shiny
Good conductor of heat
