Cells Flashcards
Classification of Domain
Bacteria
Arkaea
Eukarya
Which domains are prokaryotic?
Bacteria
Arkaea
Single-celled organisms that don’t have membrane-bound nucleus
Bacteria
Arkaea
Domain that live in extreme environments that lack oxygen, too hot or cold or salty
Arkaea
Domain found everywhere: water soil atmosphere, our body
Bacteria
Domain that have membrane-bound nucleus
Eukarya
Kingdoms of domain Eukarya
Protists
Fungi
Plants
Animals
Characteristics of living things
Organized Reproduce Homeostatic Grow and develop Respond to stimuli Use food and energy Able to adapt to environment
Organization of life
Atom Molecule Cell Tissue Organ Organ system Organism Population Community Ecosystem Biosphere
What is the smallest unit of life
Cell
Group of cells the person specific function
Tissue
Group of tissues that perform specific functions
Organs
Organs that work together form ….
Organ system
Organs systems work together to form complex ….
Organisms such as human being
All the members of a species in a particular area
Population
What’s species
A group of organism that can interbreed and produce fertile offsprings
Community
Interacting populations in a particular area
Ecosystem
When communities interact with physical environment like water gases soil and climate they form ecosystem
Biosphere
All parts of earth from air land to water where living organisms are found
Taxonomy
Assignment of a two-part man to each spacies
What is the first part of a scientific name
Genus to which species belong
What is the scientific name’s second part?
Species name
What is energy flow?
Energy comes in ecosystem as sunlight and leaves as heat
Is passed along food chained
Energy doesn’t cycle
Chemical cycling
Chemicals move from one species to another in a food chan until when with death and decomposition, they are retuned to plants again
Biodiversity
The total number of species, the variety of their genes, and the ecosystems in which their live
Extinction
Permanent loss of a species or larger taxonomic group
What are different phases of scientific method?
Observation Propose hypothesis Make predictions Design experiment Analyze data Write paper n publish results Well tested and accepted hypothesis becomes theory
What is inductive reasoning?
Inductive reasoning makes broad generalizations from specific observations
We go from specific to general
What is hypothesis?
Tentative(unsure) explanation about a natural event.
What is deductive reasoning?
In deductive inference, we hold a theory or hypothesis and based on it we make a prediction of its consequences.
The manner in which a scientist intends to conduct an experiment is called …
Experimental design
What is control group?
It goes through all the steps of the experiment but but its not exposed to the factor being tested
What is model in an experiment?
A representation of an actual object
Like mice used instead of human
What is the data in an experiment?
The results of an experiment
Data should be objective or subjective?
Objective and observable
Meaning homeostasis
Internal environment of and organism stays relatively constant
What is principle or “law”
A theory generally accepted by an overwhelming number of scientists
Principle or “law”
In an experiment, what’s the group that receives treatment?
Experimental group
In an experiment, what is control?
The group that recorded no treatment
The factor of the experiment being tested is called…
Experimental variable
Or
Independent variable
The result of an experiment is called….
Response variable
Or
Dependent variable
Classification of organisms
Domain Kingdom Phylum Class Order Family Genus Species
What’s matter?
Anything that takes up space and has mass
What are states of matter?
Solid
Liquid
Gas
What’s element?
Element is a substance that can’t be broken down to simpler substance by ordinary chemical means
How many natural elements exist?
92
What are the main elements of earth’s crust?
Silicon, Aluminum, Oxygen
What are the main elements of organisms?
CHNOPS Carbon Hydrogen Nitrogen Oxygen Sulfur Phosphorus
What’s atom?
Smallest part of an element that displays the properties of that element.
Sodium
Na
What are there subatomic particles?
Proton
Neutron
Electron
What’s atomic number?
All atoms of an element have the same number of protons. This is called atomic number
What is the mass number of an atom?
The sum of protons and neutrons in the nucleus
What’s isotope?
Atoms of the same element that differ in the number of neutrons
I is the symbol of which element?
Iodine
Epilepsy
صرع
Thyroid
تيروييد
فسفر
Phosphorus
P
سولفور
Sulfur
S
