Back to the Basics
A possible testable explanation for observations.
What is a hypothesis?
Found in plants, fungi, and some bacteria, this structure provides support and shape to the cell.
What is a cell wall?
The abbreviation “DNA” stands for this molecule that carries genetic information in living things.
What is deoxyribonucleic acid?
This determines the vast majority of characteristics in an atom.
What is the number of electrons (or protons) in an atom?
Non-living factors in an enviroment.
What are abiotic factors?
THIS is a logical interpretation of observations based on knowledge or experience, not the be confused with the definition for observation, which is the use of your five senses to gather factual information.
What is an inference?
This process, which converts sunlight into chemical energy, takes place in chloroplasts.
What is photosynthesis?
This cellular organelle contains its own DNA.
What are the mitochondria?
These five properties of water allow life on earth to thrive.
What are cohesion, adhesion, universal solvent, density, and high heat capacity?
They depend on other organisms for food and they are also known as consumers.
What are heterotrophs?
Often confused with a scientific theory (a well-supported explanation of a natural phenomenon or observations), THIS is a well-supported description of a natural relationship or principle, often using a mathematical equation.
What is a scientific law?
Unlike prokaryotic cells, these cells contain a membrane-bound nucleus and organelles.
What are eukaryotic cells?
Much like all the English language can be stored as a sequence of dots and dashes in Morse code, DNA stores information as a sequence of these.
What are nucleotide bases?
The total number of atoms in a molecule of C8H16O4.
What is 28?
Oxygen is taken from the air through THIS process, and restored to the air by photosynthesis.
What is respiration?
The name of the theory that holds these 3 main ideas:
1. All living things are composed of cells
2. Cells are the basic unit of structure and function
3. All cells come from pre-existing cells
Two solutions of different solute concentrations are separated by a semipermeable membrane. Over time, only water moves from one side to the other.
What is osmosis?
The three basic parts of a nucleotide.
What are a phosphate group, a sugar, and a base?
On the pH scale, which measures the acidity or alkalinity of a solution, this number represents neutral while a number lower is acidic and a number higher is alkaline.
What is 7?
In an energy pyramid, most of the energy from one trophic level doesn’t make it to the next because it’s lost in these two main ways — through this biological process and as this form of energy.
What are respiration and heat?
The six criteria for life.
What are (1) composed of cells (2) grow (3) require energy to power activities (4) maintain stable internal environment (5) respond to environment and (6) contain heredity in their DNA?
Diffusion and osmosis occur without energy, while endocytosis and the sodium-potassium pump require energy. These two types of transport are distinguished by their use of energy.
What are passive and active transport?
This holds the two helixes in a DNA model together.
What are hydrogen bonds between nucleotide bases?
These are the basic building blocks of proteins.
What are amino acids?
The five main levels of ecological organization, from smallest to largest.
What are organism, population, community, ecosystem, and biosphere?