Cellular respiration and Cytology Flashcards
Plasma Membrane
membrane that surrounds the cell and controls what come in and out
What makes up plasma membrane?
Phospholipids, Cholesterol, Glycolipids
What are Phospholipids made of?
2 heads, one head facing out, one facing in, tail on inside
Hydrophobic
Hates water
Hydrophilic
Loves water
Phospholipid Bilayer
where the tails touch each other to create the barrier
Transport Protein
Moving substance across the membrane
Cell surface receptors
helps distinguish healthy cells from dead or dying cells
Enzyme
makes things grow faster
Nucleus
Control center of cell, contains DNA for protien production
Cytoplasm
cellular content between the nucleus and plasma membrane
Cytosol
is the fluid in the cytoplasm
Organelles
organized structure within cells
Passive Movement
no energy needed, cell to reach equilibrium
Active Process
requires energy, will push substances into concentrated areas
Simple Diffusion
move base on concentration gradient until equilibrium is reached, for small nonpolar solutes like oxygen, carbon dioxide
Facilitated diffusion
a protein channel for substances to move through, etc sodium, potassium, glucose
Osmosis
When water is moved to reach equilibrium
Transport process for Osmosis
water moves from low concentration to high concentration of water
Tonicity
ability to change volume or pressure of a cell by osmosis
Isotonic Solution
Same concentration inside and outside of cell, no movement of water
Hypotonic Solution
water move into the cell, cell gets bigger
Hypertonic Solution
water leaves the cell, it will shrink
Primary active transport
uses cellular energy from ATP
Sodium-potassium pump
3 Na(sodium) out 2 k+(potassium) into the cell
Vesicular transport
vesicles(membrane sack) moving substances into or out of the cell
Exocytosis
out of the cell
Endocytosis
into the cell
What happens in passive process transport of osmosis?
Isotonic Solution
Hypotonic Solution
Hypertonic Solution
What happens in Active transport process of osmosis?
Primary active transport
Secondary active transport
Vesicular transport
Endoplasmic Reticulum ER
between the nuclear envelope and plasma membrane that is the point of attachment for ribosomes
2 Types of ER
Rough ER- make proteins
Smooth ER- store lipids
Lysosomes and Peroxisomes
break things down chemically
Golgi apparatus
packaging and sorting of proteins(UPS of cells)
Mitochondria
Power house of cell
Ribosomes
made in the nucleolus, then shipped out to rough ER
Cytoskeleton
extension of cell
Centrosome
Organize microtubules within cytoskeleton
Cilia
moves thigs along surface of cell
Flagella
move the cell, only found in sperm
Microvilli
for absorptions, found in digestive system
Nucleus
1 cell=1 nucleus, DNA
Nuclear envelope
allow molecules in and out of nucleus
Nucleolus
where ribosomes are made
Where is DNA located
housed in nucleus
DNA is composed of
-Five-carbon sugar deoxyribose
-A phosphate
-one of four nitrogenous bases( Adenine, Cytosine, Guanine, Thymine)
Chromatin
When DNA is divided
Chromosomes
when DNA is coiled
DNA function
Transcription- MRNA( copy of DNA)
Translation-ribosome reads code to make a protein
two classes of energy
Potential- stored energy
Kinetic- energy of motion
Chemical Energy
what the body uses
Chemical reactions
chemical bonds are broken and new bonds are formed
Enzymes(proteins)
speeds up reaction
Glucose
primary fuel of energy
Glucose Oxidation
step by step breakdown of glucose with energy release
Stages of glucose oxidation
Glycolysis
Citric acid cycle
Electron transport system
Glycolysis
in cytoplasm, glucose broken into 2 pyrugetvate, with oxygen turns into 2 sets of ATP+NADH
Citric Acid Cycle
each pyruvate goes through one cycle(krebscycle), converted to Acytle CoA, end up with 2 ATP
Electron transport system
ATP=ADP= 32-34 ATP
Mitosis
nuclear division
Meiosis
cell division in sex cells
cell division
one cell divide into two
cell cycle
when the cell divide into two identical cells called daughter cells
2 phase in cell cycle
Interphase
Mitotic
Interphase
prepares for division
g1phase, s phase, g2 phase
S phase
making a copy of the DNA, split it in 2 cells
G1 phase
cell growing and forming
M Phase (mitotic phase)
Nucleus division
Cytokinesis
division of cytoplasm between 2 new cells
Prophase
forming centriole, dissolution of nuclear envelope, moving DNA
Metaphase
lining of chromosomes to equator of cell
Anaphase
pulls DNA away
Telophase
Undo prophase
putting DNA back as chromatin, reforming nuclear envelope,
mitotic spindle broken up