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Joey Machado notes

Mrs. Hackers study stacks project

cell the smallest unit that can perform all the life processes; cells are covered by a membrane and have DNA and cytoplasm
stimulus anything that causes a reaction or change in an organism or any part of an organism
homeostasis the maintenance of a constant internal state in a changing environment
sexual reproduction reproduction in which sex cells from two parents unite, producing offspring that share from both parents
asexual reproduction reproduction that does not involve the union of sex cells and in which one parent produces offspring identical to itself
heredity the passing of genetic traits from parent to parent
metabolism the sum of all chemical processes that occur in an organism
producer an organism that can make its own food by using energy from its surroundings
consumer an organism that eats other organisms or organic matter
decomposer an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients
protein a molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes in the body
carbohydrates a class of energy giving nutrients that includes sugars, starches, and fiber; contains carbon, hydrogen, and oxygen
lipid a type of biochemical that does not dissolve in water; fats and steroids are lipids
phospholipid a lipid that contains phosphorus and that is a structural component in cell membranes
ATP adenosine triphosphate, a molecule that acts as the main energy source for cell processes
nucleic acid a molecule made up of subunits called nucleotides
sunlight can be a... stimulus
living things are made up of what? cells
What are the characteristics of living things? Cells, sense and respond, living things reproduce, living things have DNA, living things have energy, and living things grow and develop
How do you respond to some stimuli in your environment? when it is hot outside you start to sweat or when it is cold you start to shiver
What does a fur coat on a bear have to do with homeostasis? the fur coat keeps it warm and it stabilizes the internal body
What are the four basic needs of every organism? water, air, food, and a place to live
Cells of most living things are made of approximately? 70% water
Most chemical reactions involved in metabolism require? water
About how long can humans survive without water three days
Air is a mixture of gases, including oxygen and? carbon dioxide
What is a chemical process in which most living things use oxygen? releasing energy from food
Green organisms convert the energy in sunlight stored in food during? photosynthesis
How does the limited amount of space on Earth affect organisms? each animal will compete for something
What are two things food gives organisms? food fives energy and raw materials needed to carry on life processes
What are two ways organsims use nutrients from food? orangisms use the nutrients to replace cells and build body parts
eats other living organims compser
gets energy by breaking down nutrients in dead organisms or animal wastes decompser
uses energy from the sun or the chemicals in the environment to make food producer
What do all organisms do to food in order to use the nutrients in it? need to break it down
Name the five chemical building blocks of cells protein, carbohydrates, lipids, ATP, and nucleic acids
Energy-giving nutrients such as sugars, starches, and fiber are called? carbohydrates
How do cells use carbohydrates? they use them as a source of energy and for energy storage
Where can a organism get energy once it has used up most of its carbohydrates? they use energy from fats and oils after the carbohydrates are used up
Created by: joemac