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22 Cards in this Set
- Front
- Back
What does photosynthesis start with?
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Carbon dioxide, water and light energy
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What is the products of photosynthesis?
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Sugar and oxygen
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What do scientists look at when they are classifying an organism?
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external and internal features
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What is sexual reproduction?
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When one specialized egg cell from the female unites with with one specialized sperm cell from the male
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How do parasites affect the human body?
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Parasites decrease the nutrients available to the body.
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What are the factors that determine how many calories a person needs in a day?
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age, gender, how much a person weighs
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Older methods used to treat sick people
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patients were given toxic fluids, herbs were used to make medicines, leeches and maggots
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The process of getting energy from food sources occurs where?
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inside every cell in the body
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What is a consumer?
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Consumers:
can not make their own food get energy by eating plants and other consumers |
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Which food web are humans part of?
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Humans are part of the land and ocean food web.
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Why can a person become sick with a cold or the flu more than once?
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Colds and flu are caused by many different viruses.
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The largest number of producers are found in the ocean or land food web?
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ocean web
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All organisms are made up of cells that carry out the same basic function.
True or False |
True
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What type of cell destroys bacteria and viruses?
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white blood cell
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What are habits of a healthy person?
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exercise, eating healthy, proper rest
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What are pathogens?
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bacteria, virus, fungus, protist
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How does a wound on your body repair itself?
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Cells in the area of the wound divide and replace damaged cells.
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Why can a plant survive in a dark area for a short time?
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The plant can use stored food.
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Why is it important to treat ground water before it is able to be drunk?
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To remove any toxic chemicals.
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What might limit the growth of a population?
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drought, overgrazing, food shortages
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What is an antibody and how does it protect the body?
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An antibody is a protein that attaches to a harmful substance.
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How does a fertilized egg grow into a complete organism?
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The cells of the egg multiply.
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