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Science 8A Johnson

Chapter 2- It's Alive!!! Or is it? Review

What is the smallest unit of life that can perform all life processes? Cell
What is a change that affects the activity of the organism? Stimulus
What is the maintenance of a stable internal environment? Homeostasis
What is called when 2 parents reproduce offspring that will share characteristics of both parents? Sexual reproduction
What is it called when 1 parents reproduces offspring that are identical to the parent? Asexual reproduction
What is the passing of traits from one generation to the next? Heredity
What is the sum of all chemical processes that occur in an organism? Metabolism
What type of organism can make their own food? Producers
What organism eats other organisms for food? Consumers
What organisms get their food by breaking down the nutrients in dead organisms or animal wastes? Decomposers
What are large molecules that are made up of amino acids? Proteins
What are molecules made up of sugars? Carbohydrates
What are simple carbohydrates? Carbohydrates made up of one sugar molecule or a few sugar molecules linked together
What is an example of a simple carbohydrate? table sugar & the sugar in fruits
What are complex carbohydrates? Carbohydrates made up of hundreds of sugar molecules linked together
What is an example of a complex carbohydrate? Potato
What are compounds that are insoluble? Lipids
What are the molecules that form much of the cell membrane? Phospholipids
What do fats and oils store? Energy
What is the major energy-carrying molecule in the cell? ATP
What is a molecule made up of nucleotides? Nucleic acid
Plants store extra sugar as _____. Starch
What are the subunits of proteins? Amino acids
What are the 6 characteristics of living things? They have cells, sense and respond to change, reproduce, have DNA, use energy, and grow and develop.
What does DNA stand for? deoxyribonucleic acid
What are the necessities of life? Air, food, water, and a place to live
How does your body respond when cold? you shiver
How does your body respond to being warm or hot? you sweat
How do humans reproduce? Sexually
Created by: 12_rjohnson