Exam 1 Flashcards
ID tags on cells
glycolalyx
4 common elements in biology
C H N O
anatomical position (3)
body erect
feet slightly apart
palms facing forward
nervous system is protected by the ___ cavity
dorsal
from the receptor to the CNS is the ___ pathway
afferent
what is homeostasis? which 2 systems is it regulated by?
maintaining a relatively stable environment
nervous & endocrine
hierarchy of cells (5)
atoms > molec > cell > tissue > organ
carbohydrates are stored in liver and muscle as
glycogen
organic compounds contain ___ except ___ and ___ which are inorganic
C
CO and CO2 inorganic
what is an amino acid chain called?
poypeptide
RNA structure
ribose + phosphate + uracil
unsaturated fats have few ___
H atoms
RBC does not have a
nucleus
covalent v hydrogen bodn
covalent = sharing of e
hydrogen bonds = attractive force between electropositive H and electronegative atom of another molecule
major extracellular cation
Na
dehydration synthesis is catabolism/anabolism
anabolism
glycogen = ___ + ___
glucose & galactose
true or false
epithelial tissue is avascular
true
hydrostatic pressure vs osmotic pressure
hydrostatic = push water out
osmotic pressure = sucks water towards itself
3 fates of vesicles
- repair cell membrane
- exocytosis
- phagolysosome formation
organ definition
2 or more tissues forming a specific function
plasma membrane is never permeable to (3)
proteins, large molecules, polar/water souble molecules
RBC placed in a hypotonic solution will
burst
diffusion is the movement of molecules from ___ to ___ concentration
hi to low
___ in cell membrane keeps it fluid at room temperature
cholesterol
active transport involves ___ which involves the use of ___
move against concentration gradient which involves the use of ATP
rate of diffusion depends on (3)
size of particle, gradient difference, SA of membrane
Na/K pump is an example of ___ transport
active
in heart and blood vessels, the simple squamous epithelium is called the ___
endothelium
fingerlike projections that increase SA
microvilli
___ membranes lines cavities open to the outside body
mucous
this disease is characterized by a lack of lysosomes
tay sachs disease
function of SER (2)
-protein synthesis & store Ca
ionic vs covalent bonds
ionic = complete transfer of e covalent = sharing of e
bruises in the abdominal area results because
there are no bones
has its own DNA
mitochondria
the mediastinum contains (3)
blood vessel, heart, trachea
