lab 2 quiz

movement of solutes from an area of high concentration to low concentration 

(passive movement no ATP)

Simple diffusion carries things across the membrane and does not require help or ATP (pumps), it uses kinetic energy, the energy of movement 

(passive movement no ATP)

is diffusion that requires help through the use of enzymes

the movement of h2o from an area of low concentration of solutes to high concentration of solutes

The separation of molecules across a filter using hydrostatic pressure

certain factors allow things inside a membrane

Permeability goes up and the rate of diffusion increases 

Temperature goes up and the rate of diffusion increases 

Size/Mass affects the rate of diffusion (inverse relationship)

Concentration gradient affects the rate high to low is faster, low to high is slower

Steepness of gradient increases the rate

(passive movement no ATP)

Requires the right size, shape, charge -> comes in contact with the protein (enzyme) -> binding/bonding -> shape is changed (conformational change) -> enzyme flops over and closes the outside and opens the inside > allows it in the membrane

(passive movement no ATP)

Enzyme does not change shape and is always open, but only allows ions based on size and charge

Larger molecules move more slowly than smaller molecules due to their greater size and weight

This is an inverse relationship

Hydrostatic pressure

The separation of molecules across a filter using hydrostatic pressure depends on the relative size of the particle and the hole

no net movement of water, equal amount of solutes inside and outside the cell

high amount of solutes outside the cell and low amount of solutes inside the cell

water enters the cell because of the low amount of solutes outside of the cell

more tonicity, more solutes outside the cell, water moves out of the cell causing the cell to shrink 

no net movement of water, an equal amount of solutes inside and outside the cell

function : allows for selective permeability in and out of the cell

function : cell's control center and creates DNA

function : creates RNA and ribosomes

function : outer boundary of the nucleus that separates it from the cytoplasm outside the nucleus

allows small molecules like proteins and RNA in and out of the nucleus

ensures the correct amount of DNA goes to each cell after mitosis as well as the organization of microtubules

membranous organelle that is responsible for storing ribosomes as well as transporting the ribosomes to the Golgi apparatus

site of protein synthesis reads the mRNA sequence and turns it into proteins

site of steroid (cholesterol) and lipid synthesis

packages, modifies and sorts proteins for exocytosis

site of ATP synthesis contains folds of cristae that increase surface area to maximize ATP synthesis