Question | Answer |
anything that causes a reaction or change in an organism | stimulus |
reproduction in which sex cells from two parents unite | sexual reproduction |
reproduction in which a single parent produces offspring | asexual reproduction |
an organism that eats other organisms or organic matter | consumer |
an organism that gets food by breaking down dead organisms or animal wastes | decomposer |
an organism that makes its own food by getting energy from its surroundings | producer |
molecules that are made of sugars | carbohydrates |
large molecules made of smaller molecules called amino acids | proteins |
a molecule made up of subunits called nucleotides | nucleic acids |
a lipid that contains phosphorus and that is a structural component in cell membranes | phospholipids |
the major energy-carrying molecule in the cell | ATP |
a type of biochemical that doesn't mix with water | lipid |
the passing of traits from one generation to the next | heredity |
the sum of all chemical processes that occur in an organism | metabolism |
a membrane-covered structure that contains all of the materials necessary for life | cell |
the maintenance of a constant internal state in a changing environment | homeostasis |
What are the four basic needs of every organism? | water, air, a place to live, and food |
cells of most living things are made of approximately how much water? | 70% |
what are two things food gives organisms? | energy and raw materials needed to carry on life processes |
what do organisms need in a place where they live? | all the things they need to survive |
name the five building bocks of cells | proteins, carbohydrates, lipids, ATP, and nucleic acids |
what do organisms do to food in order to use the nutrients in it? | break down the food |
what are two ways organisms use nutrients from food? | to replace cells and build body parts |
how do cells use carbohydrates? | as a source of energy and for energy storage |
molecules made of different kinds of atoms are called what? | compounds |
nutrients are made up of ____, a substance created when two or more atoms combine. | molecules |
carbohydrates made of one suger molecule of a few are called? | simple carbohydrates |
a carbohydate made of hundreds of molecules is called? | complex carbohydates |
what is the difference between fats and oils? | at room temperature, most fats are solids and most oils are liquids. |
why are nucleic acids called the bluprints of life? | they have all the information needed for a cell to make proteins. |
sunlight can be a ___ | stimulus |
living things are made of ___ | cells |
explain the difference between asexual and sexual reproduction | asexual reproduction is when a sigle parent produces offspring, whereas sexual reproduction is when two parents produce offspring identical to both |
homeostasis means containing ___. | stable internal conditions |
what does the fur coat of a bear have to do with homeostasis | keeps it warm and stable in its environment. |