Origin of Life Flashcards
Balance/normal/average
Homeostasis
simple to complex, unicellular, multicellular
Organization
sum total of all chemical reactions in the body
Metabolism
fit, survive, adjust, change
Adaptation
size, shape, complexity, quality and quantity
Growth and development
Irritability, Environment, reaction
Response to stimulus
proliferation of organisms, gametes, sex
Reproduction
Two types of transport of cell amterials
Passive and ACtive
Cell doesn’t use energy (no utilization of ATP - Adenosine Triphosphate);
- molecules move randomly;
- no need for oxygen; and
- molecules move from an area of high concentration to an area of low
concentration. (It follows concentration gradient
Passive transport
It involves random movement of substances or molecules
from an area of high concentration to an area of low concentration.
Diffusion
the flow of materials, whether solvent or solute,
is from greater to lesser concentration
Concentration gradient
It is the movement of specific particles through
specific carrier proteins situated in the membrane. This also follows the
concentration gradient.
Facilitated diffusion
It is the movement of water across membranes. Water moves
from high to low concentration
Osmosis
Cells use energy (with utilization of ATP-Adenosine Triphosphate); and
- Movement of molecules from an area of low concentration to an ares high
concentration (against the concentration gradient).
Active transport
It transport proteins that require energy to do work
Protein pumps
It is taking bulky substances into a cell
Endocytosis
It is the transport of large molecules
Bulk transport
It is taking bulky substances out of a cell.
Exocytosis
cell eating
Phagocytosis
Cell drinking
Pinocytosis
A type of solution with
high concentration of
solute inside the cell, thus
water enters the cell
Hypotonic solution
A type of solution with
higher concentration of
solute outside the cell,
thus water leaves the cell.
Hypertonic solution
A type of solution where
the concentration of
solute outside the cell is
equal to that within the
cell, water moves equally
in both directions
Isotonic solution
Living organisms consist of one or more cells that are connected
to one another
Organization
It is the building block of matter
Atom
positively charged particles
Proton
no charge particle
Neutron
They are one-celled organisms. Ex. bacteria, protists like amoeba,
algae, etc.
Unicellular
These are organisms composed of many cells. Ex. all plants, all
animals, most fungi, and some protists
Multicellular
negatively charged
Ex. hydrogen atoms, oxygen atoms
Electron particles
Two or more atoms joined in chemical
bonds. Ex. H2O, NaCL
Molecules/compound
Tiny organs of the cells that have
specific function.
* They are known as little organs.
* They are found inside the cell.
* Ex. ribosome, chloroplast
mitochondria
Organelles
They are the building blocks of life.
* All living organisms are made up of cell
Cells
When cells of the same structure and
function combine together
Tissues
It is made up of one layer of cells
- It is found in most glandular structures
Epithelial tissue
It is for support and
for connection
Connective tissue
It is for movement and locomotion.
- It gives shape to the body.
Muscular tissue
It is a liquid tissue
Vascular
It receives and transmits nerve impulses
Nervous tissue
These resemble branches
and are involved in the passage of
messages from other neurons to the cell
body.
Dendrites
Foundation of the nervous system
Neurons
A cell body, which
includes a nucleus, Golgi body,
endoplasmic reticulum, mitochondria, and
other parts, is a part of every neuron
Cell body/Soma
Resembles a
tube, is a structure that transports
electrical impulses from a neuron’s cell
body to its axon terminals, which then
transmit the impulse to other neurons
Axon
It is for saltatory
conduction of nerve impulses.
Myelin sheaths
Axon endings that
make synaptic connection with another
neuron. neurotransmitters.
Axon terminals
It is the chemical connection
between a neuron’s terminal and its
neighbor’s dendrites
Synapse
translate information from the outside
world into comparable internal responses.
As a result of the sensory inputs, the
sensory neurons become active and
provide sensory data to the brain and
spinal cord. Their structure is
pseudounipolar
Sensory neurons
These are multipolar
and are situated in the central nervous
system, but they also have axons that
extend outside of it.
Motor neurons
Their structure is
multipolar. Only the neighboring sensory
and motor neurons are connected to via
their axons. They aid in the signal
transmission between two neurons
Interneurons
is created when a gap junction
connects two neurons. Ion channels that
aid in the direct transmission of a positive
electrical signal are present in these gaps.
Electrical synapses
Involve a space between two
neurons called the synapse through which
the action potential influences other
neurons
Chemical synapse
The release of these chemical messengers is triggered by the action potential, which
is conveyed through the axon to a
postsynaptic terminal.
Neurotransmitter