Biology Flashcards
What are the signs of life? (MRS GREN)
Movement reproduction sensitivity growth respiration excretion nutrition
what are the 5 kingdoms?
plants animals fungi protists prokaryotes
which of the 5 kingdoms are eukaryotes?
plants
animals
fungi
protists
what are the 4 adaptions of a sperm cell?
loads of mitochondria
tail
large nucleus
acrosome (the hard hit on the head)
what are the 3 adaptions of a neurone cell?
long axon to send signal
myelin sheath to speed the signal
branched ends of dendrites and axion terminals
what are the 2 adaptions of a mussel cell?
loads of mitochondria
spindle fibers to contract
what are the 3 adaptions of a cilia cell?
cilia to waft mucus
loads of mitochondria
goblet cells
what are the 2 adaptions of a palisade cell?
loads of chloroplast to absorb sunlight
nucleus at the bottom so it doesn’t burn
what are the 3 adaptions of a root hair cell?
a extension to increase surface area
loads of mitochondria
has no chloroplast
what are the 2 adaptions of a xylem cell and what do the do?
long thin and hollow
coated with lignin to be waterproof
and they transport water and mineral and make the outside layer of plants
what are the 2 adaptions of a phloem cell and what is its function?
they transport sugar
sieve to cut off the dead bit of the plant
companion cell to feed and help the phloem
how do viruses work?
they are tiny capsules that carry 1 strand of DNA that brakes into a cells and changes to ribosome to make more of the virus until the cell pops and let them all out and then the process is repeated
what are the levels of cells organisation?
cell - tissue - organ - system - organism
what are the biological molecules?
carbohydrates (starch + sugar)
protein
lipids
how do you test for sugar/glucose
add a Benedict solution the more red it goes under heat the more sugar there is