Cell Biology
Name at least two of the non-membraneous organelles
centrioles, proteosomes, ribosomes
What is homeostasis?
Maintaining a set point
a stable internal environment
if an ion has more lectrons than protons it is called a
anion
what are the 4 macromolecules
carbs, proteins, lipids, nucleic acid
are the tails facing eachother in the plasma membrane hydrophilic or hydrophobic?
hydrophobic
Which type of membrane channels open and close depending on certain cell conditions
Gated channels
ex. ligand-gated
What type of feedback loop accelerates something to completion?
positive feedback loop
name of a substance that reacts well with water
hydrophilic
unsaturated fats have what in the carbon chain to make it have a bend?
double bond
what is diffusion?
high to low concentration
What type of solution causes a cell to lose water and shrivel up?
hypertonic
what does the integumentary system consist of?
the skin!
Sometimes in covalent bonds, the electrons are situated closer to one atom than another, this leads to a partial charge. when molecules have a partial charge they are called what?
polar molecules
what do structural proteins do?
make up structures in the body
Do you need ATP for active transport or Facilitated Diffusion?
Active Transport
Do solutions like to go from a high to low concentration or a low to high concentration?
high to low
Temperature regulation is an example of what type of feedback loop?
negative!
Name a characteristic of water with a little explanation
polarity, states of matter, high heat capacity, heat vaporization, solvent properties, adhesion, and cohesion
what is the secondary structure of a protein?
Helix or beta pleated sheet
the importing of extracellular substances through the formation of vesicles at the cell surface
endocytosis
carrier proteins
childbirth os an example of what type of feedback loop?
positive!
dehydration synthesis releases what
water
how many sugars are in a monosaccharide?
one
are you going to ace this exam??
YES!