Biology Lab Midterm Flashcards
what is the basic unit of mass?
Grams
what is the basic unit of volume?
meter
how many kilograms are in a pound?
2.2
what is the basic unit of length?
meter
what is the basic unit of a chemical substance?
moles
what is avogrados number?
6.022x10^23
what you should never do when using a lab balance?
place the samples directly on the balance
what does the TARE button do?
puts the balance back to zero
when is the only time you will push the plunger down the second time?
when all the liquid is release
what objective lens should you always start with on the light microscope?
on the smallest which is the 4x
ocular lense, revolving nose, stage, arm, coarse adjustment, fine coarse adjustment
what are four macromolecules of life?
carbohydrates, lipids, protein and nucleic acid
macromolecules are - that are built from -
monomers, polymer
what are two functions of carbohydrates?
storage, energy use, and construction
two function of lipids
?
cell membrane and energy storage
two examples of protein and their function?
enzyme- speed up chemical reaction
casein- storage
actin/myosin- movement
cytology
study of cell structure and function
what is the defining characteristic eukaryotic membrane?
unit membrane
what are the three bacteria shapes?
sphere (coccil), spiral, rod(bacilli)
where those ecoli found?
they live in the digestive tract in the warm blooded animals.
where are methanogens produce?
they live in the gut of animals
what are the difference between plant cells and animal cells?
plants have chloroplast
plants have a cell wall
plants have a vacuole
what process did we witness happening within the elodea leaf?
cytoplasmic streaming
what are the three germ layers
?
ectoderm mesoderm and endoderm
