Cells Flashcards
Differentiate between dynamic and static equilibrium with regards to homeostasis
Dynamic equilibrium is maintained = it isn’t always the same, but things stay in range.
static equilibrium = stays the same
The relationship between a response to stimuli and homeostasis.
Organisms constantly take in stimuli and have to respond to the brain, then in order to maintain homeostasis.
What’s the difference between positive and negative feedback loops
In a pos feedback loop the output (or product) of a system intensifies the response.
———————————————-In a neg feedback loop the output (or Pruduct) of a system causes a counter response to return to a set point
Difference between passive and active transport
Active
Need energy
Moves low to high
———————————————-Passive
Does Not need energy
Move from high to low
Describe the 6 types of transport
- Simple Diffusion · oxygen and co2 high to low
- Facilitated Diffusion · a transport protein
- Osmosis · diffusion of water
- Active Transport · molecular pumps
- Endocytosis · into cell
- Exocytosis. Out of cell
Difference between hyp, hyper, and iso
Hypotonic- swell
Water goes in
Hypertonic- shrivel
Water goes out
Isotonis- stays the same
composed of one cell
unicellular
composed of many cells
muliticellular
need of an organism to stay stable by regulating internal conditions
Homeostasis
what gets dissolved
solute
does the dissolving
solvent
uniform mixture of two or more substances
solution
amount of solute dissolved in solvent
concetration
difference in concentration
concentraition gradeint
spreading out of molecules across a membrane
simple idffusion
transport protein helps facilitatae the diffusion of molecules normal
facilitated diffusion
simple diffusion of water
osmosis
cell eating
phagocytosis
cell drinking
pinocytosis
a process that creates special structures
differentiation
undifferentiated cells become differentciated
stem cells
embryo with 3 differentiated germ layers
gastrula
process of body organ and organ system formation that follows gastrulation
organogenesis
a repeated pattern of growth
cell cycle
one long continuous thread of DNA that consists of thousnads of genes and regulatory
chromosomes
section of DNA that contains the instructions for makeing a proteins
gene
two identical chromatids
sister chromatids
region of the condeensed chromosomes that looks pinched
centromere
ends of DNA molecule
Telomere
spreadin of disease from one organ to others
metastasize
