1.3 Studying Life Flashcards
What is biology?
The study of life and living things.
In what two Greek words biology divides?
In bios which means life and logos which means study of.
Living things are made up of basic units called
Cells
What characteristics do all living things share?
Have cells, DNA, obtain and use energy, grow and develop, reproduce, respond to their environment, maintain homeostasis, and change over time.
A genetic code
DNA
Is information that is copied and passed from parent to offspring.
DNA
Smallest units of an organism
Cells
Is a collection of living matter enclosed by a barrier that separates the
cell from its surroundings.
A cell
Is a signal to which a
living thing reacts.
Stimulus
Living thing reproduce in two types:
Sexual and Asexual
Cells from two parents
come together to form the first cell of a new
living thing.
Sexual Reproduction
A single-celled organism divides in half to
form two new organisms.
Asexual Reproduction
Is any process with which a living thing keeps itself alive
Homeostasis
Is the process by which living organisms maintain a stable internal environment despite changes in external conditions.
Homeostasis
Is a chemical
reactions through which a living thing
builds up or breaks down materials
Metabolism
Living things are made up of only a single cell are called
Unicellular organisms
Plants and animals are unicellular or multicellular
Multicellular organisms
Life needs _______ that serves as nutrients to build body parts and energy that fuels the body.
matter
“Living planet’’
Biosphere
Multi-cellular organisms typically go through a
process called
Development
As cells divide, they change in shape and structure in a process called
Differentiation
Change over time in living things is called
Evolution
What are the biological principles of living things
-Cellular Basis
-Information and Hereditary
-Matter and Energy
-Structural and Functional
-Reproduction
-Movement
-Evolution
-Unity and Diversity
All the reactions by which a living thing builds
up and breaks down matter is its _______.
Metabolism
The part of Earth where living things are found
is called the __________.
Biosphere
All the information that an animal needs to live
is stored in it
DNA
