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21 terms

Life Science Chapter 2

Living Things
STUDY
PLAY
Stimulus
change in an organism's environment that affects the activity of an organism
carbohydrates
group of compounds made of sugars
homeostasis
maintenance of a stable internal environment
starch
complex carbohydrate made by plants
heredity
transmission of characteristics from one generation to the next
metabolism
chemical activities of an organism necessary for life
nucleicacids
made up of subunits called nucleotides
consumers
eats other organisms for food
decomposers
organism that breaks down the nutrients of dead organisms or wastes for food
phospholipids
two layers of these form much of the cell membrane
enzymes
proteins that speed up certain chemical reactions
DNA
molecule that provides instructions for making proteins
producer
organism that can produce its own food
cell
membrane-covered structure that contains all materials necessary for life
asexual
reproduction in which a single parent produces offspring that are identical to the parent
lipids
chemical compound that cannot mix with water and that is used to store energy
proteins
large molecule made up of amino acids
ATP
energy in food is transferred to this molecule
sexual
reproduction in which two parents are necessary to produce offspring that share characteristics of both parents
Can iodine be a tattleltale?
Yes, putting a drop or two of liquid iodine on a food item makes the starch (a complex carbohydrate) in that food turn a blue-black color.
All living things do this
have 1 or more cells
reproduce
grow and develop
have DNA
use energy
live organisms
live cells