Studied by 0 peopleWhat is Biology?
The study of life
What are the two forms of living organisms?
Unicellular or multicellular
How many characteristics of life are there?
8
What are the 8 characteristics of life?
Composed of cells, have order/organization, respond to their environment, regulation/homeostasis, reproduction, use energy, contain genetic information, evolve and adapt
What best illustrates homeostasis?
Salt concentration in blood remaining relatively steady
What is the smallest scale?
Atoms
What is the largest scale of life?
Biosphere
Rank the following parts of life from smallest to largest
Atoms, molecules, organelles, cells, tissues, organs, organ system, species, population, community, ecosystem, biosphere
At which point of the organizational hierarchy does life emerge?
The cellular level
What is adaption?
The process that enables organisms to improve survival and reproduction in their environments, a result of natural selection
What is fitness?
An organism's ability to survive and reproduce
What is natural selection?
"Survival of the fittest"
What are the 2 requirements of natural selection?
Genetic diversity and differential reproductive success
What is evolution?
Changes in the DNA of a population over multiple generations, can occur through natural selection, responsible for life’s diversity
In which populations will evolution through natural selection occur most rapidly?
Populations of plants that reproduce sexually and live in an unstable environment
What is taxonomy?
The branch of science that classifies, identifies & names organisms
What are the three domains of life?
Bacteria, Archaea, and Eukarya
What are prokaryotes?
Organisms that lack a nucleus, unicellular, bacteria + archaea
What are eukaryotes?
Uni or multicellular organisms that have a nucleus and other membrane-bound organelles
What are the 4 domains of eukaryotes?
Animals, plants, fungi, protists
What does the scientific method start with?
An observation and a question
What is a prediction?
An expected outcome
What is a hypothesis?
A proposed and testable explanation for an observation that includes a prediction
What is a theory?
A testable and broad hypothesis supported by a large body
Biology
the study of life
Unicellular
forms of life that consist of a single cell
Multicellular
forms of life that consist of multiple cells
Characteristics of life
Composed of cells, have order/organization, respond to their environment, regulation/homeostasis, reproduction, use energy, contain genetic information, evolve and adapt
Homeostasis
salt concentration in blood remains relatively steady, regardless of a person's diet
Atoms
smallest scale of life
Biosphere
largest scale of life
Emergent properties
when living things become more complex as it goes from cellular level to organ systems
Cellular level
where life emerges in the organizational hierarchy
Adaption
process that enables organisms to improve survival and reproduction in their environments
Fitness
an organism's ability to survive and reproduce
Natural selection
"survival of the fittest"
Evolution
changes in the DNA of a population over multiple generations
Taxonomy
branch of science that classifies, identifies & names organisms
Prokaryotes
lacks a nucleus, unicellular, bacteria + archaea
Eukaryotes
uni or multicellular organisms that have a nucleus and other membrane-bound organelles
Scientific method
starts with an observation and a question
Prediction
expected outcome
Hypothesis
proposed and testable explanation for an observation
Theory
testable and broad hypothesis supported by a large body of evidence
Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, and Sulfur
97% of the mass of more life is composed of
Water
small polar molecule with emergent properties
Hydrophobic
a substance that does not have an affinity for water
Hydrophilic
a substance that has an affinity for water
pH
7.4, the pH of blood
Buffers
resist changes in pH when acids or bases are added to a solution
Organic molecules
molecules with covalently linked carbon and hydrogen atoms
Carbohydrates, lipids, proteins, nucleic acids
the 4 biomolecules
Monomers
single individual building blocks that can be linked together to create polymers
Ribosomes, Gol
Biology
The study of ____.
Unicellular
Forms of life that consist of a single ____.
Multicellular
Forms of life that consist of multiple ____.
Homeostasis
Salt concentration in blood remains relatively steady, regardless of a person's diet. This best illustrates ____.
Atoms
Smallest scale of ____.
Biosphere
Largest scale of ____.
Atoms
Rank the multiple parts of life from smallest to largest:____, molecules, organelles, cells, tissues, organs, organ system, species, population, community, ecosystem, ____.
Emergent properties
When living things become more and more complex as it goes from cellular level to organ systems, "the whole is greater than the sum of the ____."
Cellular level
At which point of the organizational hierarchy does life ____?
Cells
Smallest unit of ____.
Adaption
Process that enables organisms to improve survival and reproduction in their environments, this is a result of natural ____.
Fitness
An organism's ability to survive and ____.
Natural selection
"Survival of the ____."
Genetic diversity
2 requirements of natural selection:(1) ____, (2) differential reproductive success where individuals leave more offspring than others.
Evolution
Changes in the DNA of a population over multiple generations and can occur through natural selection + responsible for life’s ____.
Unstable environment
Evolution through natural selection will occur most rapidly for populations of plants that reproduce sexually and live in an ____.
Taxonomy
Branch of science that classifies, identifies & names ____.
Bacteria, Archaea, Eukarya
Three domains of ____.
Prokaryotes
Lacks a nucleus, unicellular, bacteria + ____.
Nucleoid
Bacteria DNA:circular and found in a region called the ____ and have small ribosomes and divide by binary fission.
Eukaryotes
Uni or multicellular organisms that have a nucleus and other membrane-bound ____.
Linear
Eukaryotic DNA:____ shape and found inside the nucleus has ribosomes and divides by mitosis and cytokinesis.
Animals, plants, fungi, protists
4 Domains of ____.
Observation
Scientific method starts with an ____ and a question.
Prediction
Expected
Note
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