Microscopes & Organelles
Making a specimen clear is called
Resolution
All cells must have a _______ SA to V ratio
LARGE
Main function of carbohydrates
and percent of your diet
energy, 60%
2 main types
physical and chemical
Diffusion
Organelle responsible for protein synthesis
Ribosomes
Type of protein structure in the membrane that is used for transport
integral
3 functions of fats
Energy storage
Insulation
Hormones
Folds inside the stomach
Rugae
2 muscles involved in respiration
Diaphragm
intercostals
3 differences between plant and animal cells
Vacuole
Cell Wall
Chloroplasts
Movement of water from high to low across a semi permeable membrane
osmosis
Test for Proteins - reagant and colour
Biuret reagant - purple
2 main sphincters of the stomach
Cardiac and pyloric
3 main stimuli that affect heart rate with example
Nervous - anger
Chemical - caffeine
Physical - running
Compare and contrast SEM and TEM
Both microscopes have high resolution and magnification
SEM - 3D image of outside surface - coated in gold
TEM - 2D Cross sectional - dead, dehydrated specimen
Environment when there is a lower concentration of solute than in the cell
What will happen to an animal cell in this environment
Hypotonic
Lysis
Subunit of Nucleic acids
its components
Nucleotide
Sugar, phosphate, base
3 layers of muscles in the stomach
Longitudinal, circular, oblique
Electrical signal pathway to make the heart beat
SA node - AV node - Bundle of His and Purkinje fibers
Low power FOV is 4.6 mm and there are 8 cells on medium power, what is the size of each cell in micrometers
230
2 kinds of bulk transport bringing particles into the cell
Pinocytosis, Phagocytosis
All enzymes act as__________ where they speed up chemical reactions but are not consumed themselves
3 key facts
catalysts
Active site
ASE ending, cofactors or coenzymes
Substrate
Lock and key
4 main enzymes used throughout digestive system and what they do
Amylase - mouth, SI - acts on starch
Pepsin - stomach, acidic, works on proteins
Bile - emulsifying agent from GB and liver - fats
Trypsin - from SI in doudenum, activated, protein
many others
3 subdivisions of the circulatory system
Cardiac, pulmonary and systemic