incorrect exam questions as Flashcards
amylase cofactor
- chloride ions
amylase cofactor
- chloride ions
carbolic anhydrase co factor
- zinc which is a prosthetic group
light microscope used to view
- whole cells
TEM used to see
- organelles
laser confocal microscope used to view
- objects and certain depth
SEM used to view
- surfaces
what cell division stage is known as the reduction division
- first stage in meosis
oxygen consumption calculations
- decrease in volume in a minute depending on unit
why do some transport do not require ATP
- particles have their own kinetic energy
-movement down concentration gradient
how hydrophiles are supported
- air spaces give buoyancy so the plant/leaf can float
- ## supporting by surrounding water
resolution
the ability to distinguish between two separate objects
autoimmune disease
- abnormal immune response against tissues normally in the body
advantage of not habituating endangered species
- animals exhibit natural behaviors
- less likely to catch disease from humans
disadvantages of not habituating endangered species
- could be wiped out by diseases
rate of transpiration =
volume/time
another way other than transpiration how water is lost from plants
- evaporation from upper surface of leaves
why would onion root tips be used to view cells undergoing mitosis
- site of cell division
-meristematic tissue
fluid Mosaic description
-phospholipid bilyer. hydrophobic tails inwards and hydrophilic heads outwards.
phospholipids free to move in membrane
-proteins are randomly arranged between phospholipids
why can steroid hormones move across the membrane
- they are soluble
-uncharged so dissolve in phospholipid bilayaer
defining feature of eukarya and the other domains
- nucleus
-80s ribosomes
-membrane bound organelles
ways scientists validate studies
-repeat the study
-peer review
-look for supporting evidence from other studies
rate of reaction =
1/time
whats considered a high standard deviation number
- greater than 1
what do overlapping error bars mean
- no significant difference/uncertain
what do non overlapping error bars means
- there is significance
difference between EM and laser confocal microscope
- has a lower resolution than EM
-Can have fluorescent tags
explain independent assortment
- homologous pair are randomly arranged on the equator of the spindle fibre.
-maternal or paternal chromosomes can end up in either daughter cell
-each homologous pair is genetically different
ethical issues of using embryonic cells as a source of stem cells
- embryos are destroyed
-debate where life begins
-cannot give consent
xylem and phloem similaries
- both made up of cells joined end to end
differences between xylem and phloem
-lignified vs not lignified
no cytoplasm and organelles vs cytoplasm and a few organelles
describe how to dissect a bony fish and insect to view gas exchange systems
- lift and remove operculum of fish
-cut open exoskeleton of insect
-observe gills/ trachea under microscope
why is increasing surface area a advantage for gas exchange
more space for a larger volume of gas exchange to occur
role of a large blood supply in the alveoli
- for ventilation. CO2 constantly replenished
-maintain a steep concentration gradient
elastic tissue
- strech and reoil- increases surface area
benefit of genetic biodiversity
- provides variation for natural selection
how to use a calibration curve
- find the absorbance using colorimeter
- find concentration that corresponds to the absorbance
- description of moving along the x and y axis
