Octubre 7 Bi Flashcards
The variety of life
Biodiversity
Is a particular type of living things that can reproduce by interbreeding among themselves
Species
Is the scientific study of all forms of life , or all types of organisms
Biology
Is any individual living thing
Organism
Is the basic unit of life
Cell
All of the chemical processes that build up or break down materials
Metabolism
The genetic material is a molecule called deoxyribonucleic
DNA
Is an organized group of related parts that interact to form a whole
System
Is a physical environment with different species that interact with one another and nonliving things
Ecosystem
Is the maintenance of constant internal conditions in an organism
Homeostasis
All living things and all the places they are found on Earth
Biosphere
Is the change of living things over time
Evolution
An inherited trait that gives an advantage to individual organisms and is passed on to future generations
Adaptation
Includes using our senses to study the world , but it may also involve other tools
Observation
Are descriptions of a phenomenon that can include sights , sounds and smells
Qualitative data
Are characteristics that can be measured or counted , such as mass , volume and temperature
Quantitative data
Is a proposed answer for a scientific question
Hypothesis
Is a condition that is manipulated , or changed by a scientist
Independent variable
Are observed and measured during an experiment
Dependent variable
The conditions that do not change during an experiment
Constants
Is a proposed explanation for a wide range of observations and experimental results that is suppory by a wide range of evidence
Theory
Is the smallest basic unit of matter
Atom
Is one particular type of atom and it cannot be broken down into a simpler substance by ordinary chemical means
Element
Is a substance made of atoms of different elements bonded together in a certain radio
Compound
Is an atom that has gained or lost one or more electrons
Ion
Forms through the electrical force between oppositely charged ions
Ionic bond
Forms when an atom share a pair of electrons
Covalent bond
Is two or more atoms held together by covalent bonds
Molecule
Is an attraction between a slightly negative atom often oxygen and nitrogen
Hydrogen bond
The attraction among molecules of a substance
Cohesion
The attraction of molecules of different substances
Adhesion
Is a mixture of substances that is the same throughout
Solution
Is the substance that is present in the greater amount and that dissolves another substance
Solvent
Is a substance that dissolves in a solvent
Solute
is a compound that releases a proton—a hydrogen ion (H + )—when it dissolves in water.
Acid
are compounds that remove H + ions from a solution.
Bases
A solution’s acidity, or H + ion concentration, is measured by the
Ph
Was the first to identify cells , and he named them; year
Hooke , 1665
Because he made better lenses, observed cells in greater detail.;year
Leeuwenhoek , 1674
Was the first to note that plants are made of cells;year
Schleiden , 1838
concluded that all living things are made of cells; year
Schwann , 1839
proposed that all cells come from other cells , year
Virchow , 1855
