Characteristics of Living Things
An idea about why or how something happens is a ____________________ .
hypothesis
What is the job of the circulatory system?
to move blood to all parts of your body.
Most microorganisms are ____cellular.
uni
The first organism in a food chain that provides energy for all other organisms is a ____________.
producer
List 2 examples of physical properties and 2 examples of chemical properties.
Physical: mass, hardness, boiling/melting point, electrical conductivity, solubility ...
Chemical: reactivity, flammability, acidity, alkalinity...
List the 7 life processes.
Identify the main organ in the nervous system.
brain
Why is a fungi not a plant (even though it looks like one)?
They do not make their own food.
Is a worm a vertebrate? Why or why not?
No, because worms do not have backbones.
What is the difference between a physical property and a chemical property?
Physical properties are reversible (can be changed back) and chemical properties are irreversible (cannot be changed back).
Describe the difference in plants and animals in their life process of movement.
Roots hold plants in place so they can only move parts of their bodies while animals are able to move from place to place to find food, shelter and escape danger.
Give an example of a unicellular organism.
most microorganisms including bacteria and protists
Microorganisms are so small we need a ____________ to ___________ them so they are big enough to be seen.
microscrope, magnify
Explain the difference between fertile and infertile. Give an example of an infertile organism.
Fertile - able to produce
Infertile - unable to produce
Hybrids are infertile. Example: mule, zonkey, liger
What does it mean if a substance is corrosive? What precautions should you take when handling this substance?
Corrosive substances can burn your skin. You should wear gloves and goggles.
Plants and animals are both living organisms, yet they differ in the life process of nutrition. Explain.
Plants make their own food while animals get their nutrition from the food they hunt/catch/find.
Kidneys belong to the ______________ system while the small intestine belongs to the ___________ system.
Kidneys belong to the excretory system while the small intestine belongs to the digestive system.
Name a discovery made by Louis Pasteur.
microorganisms from the air cause food to go bad.
Give an example of an organism in the fungi kingdom.
Where is water located on a pH scale?
in the middle, neutral, pH level of 7 ...
The chemical process that happens inside body cells to release energy is _______________.
respiration
Explain the relationship between organs, tissues, cells and organ systems.
Cells make up tissues. Tissues make up organs. Organs make up an organ system.
2. They cannot move any part of themselves without the help of other things.
3. They do not grow and need a host cell to respirate.
4. Viruses do not excrete waste.
Describe the importance of decomposers.
Decomposers cause decay which is important for removing dead organisms and animal wastes. Decay releases mineral salts back into the soil where they are absorbed and used by the plants.
Give an example of a highly acidic solution and a highly alkalidic solution.
Acidic: lemon, vinegar, stomach acid
Alkalidic: soap, bleach, drain cleaner