Cells! Flashcards
PH
Concentration of hydrogen ions
Acids
Solutes that add hydrogen ions
Proton donor
Base
Solutes that remove hydrogen ions
Buffers
Weak acids that help balance PH
Ex. Carbonic acid H2CO3
NaOH +HCl
NaCl + H2O
4 organic molecules found in humans
Carbohydrates, lipids, proteins, nucleic acids
Glycogen
Main way to store sugar in animals
Starch
Main way to store sugar in plants
Saturated fatty acids
Remain solid at room temp and have single covalent bond between carbon
Unsaturated fatty acids
Remain liquid, double covalent bonds between carbon
What is the function of fatty acids
Energy source, insulation, protection
Steroids
Cholesterol gives placidity to cell membrane and maintains shape
Phospholipid
All membranes are made of two layers
Hydrophilic heads
Hydrophobic tails
What is proteins most abundant source of energy
Nitrogen
All enzymes are
Proteins
All chemical reactions are regulated by what
Enzymes
Primary structure
Chain of acids
Secondary structure
Alpha forms spirals
beta forms pleats
Tertiary structure
Coiling and folding back onto themselves
Quarternary structure
Looks like tertiary with more folding
Ex collagen and hemoglobin
Cofactors
Ions or vitamins that bind to enzymes to make them functional
DNA
Located exclusively in the nucleus and holds codes for proteins only
RNA
Makes a copy of DNA and synthesizes proteins
Located in nucleus and cytoplasm
Single strand
DNA
Holds our genetic code
Located only in the nucleus
2 stands
What are the 3 types of RNA and where are the located
mRNA (messenger) synthesis in nucleus and comes out into cytoplasm
tRNA (transfer) cytoplasm
rRNA (ribosomal) cytoplasm
Nitrogenous base pairing in DNA
Adenine- thymine
Guanine- cytosine
Nitrogenous pairing with RNA
Adenine-uracil
Guanine- cytosine
Exocytosis
The process of releasing a synthesized product
Nucleus
Contains DNA
Function: genetic code
ER
Protein synthesis in rough ER and protein modification
Golgi apparatus
Transport and lipid synthesis
Mitochondria
ATP synthesis
Centrisome/ centrioles
Cell division
Ribosomes
Protein making structures
Cell membrane
Protection and semi permeability
Villi
Increase surface area
Cilia
Usually one or two
Function is movement
Flagella
Just one, function is movement
Cytoplasm
Jello like mass in cell
Nucleoli
Most active part of nucleus
DNA is folded very tightly with help of histones
Chromatin
DNA together with histones
Chromosomes
Chromatin folded together
Cytoskeleton
Microfilaments
Intermediate filaments
Microtubules
Structural proteins for shape and strength
Cytoplasm
Intercellular fluid
High in potassium and low in sodium
Transcription
The process of making mRNA using DNA as a template
Translation
Process where proteins are synthesized using mRNA as a template in the cytoplasm