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Science Ch 4 Test: The Cell in Action
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Terms in this set (32)
cell structures producers need to produce food
chloroplast
process that produces two identical nuclei
mitosis
difference in the structures in eukaryotic and prokaryotic cells
no nucleus in prokaryotic
type of cell division that occurs in prokaryotes
binary fission
type of nuclear division that occurs in eukaryotes
mitosis
what does osmosis have to do with plants wilting
water leave the plant
2 differences between cellular respiration and fermentation
respiration uses ocygen but fermentation doesnt. respiration uses more energy and fermentation uses less
products of photosynthesis
glucose and oxygen
where photosynthesis takes place
chloroplast
products of respiration
energy (ATP), CO2, H2O
photosynthesis and respiration depend on each other by...
carbon dioxide and oxygen
similarities and differences between active and passive transport
similarity: movement of particles, difference: passive= high to low/ active= low to high
chlorophill
green pigment that gives plant its green color and traps sun's energy used for photosynthesis
if there were no oxygen, how would cells have to get energy
fermentation
chromosomes are organized into...
dna of cell
what does it mean that potatoes have more chromosomes than humans
more chromosomes doesn't mean more complex
how many pairs of homologous chromosomes do human cells have
23 pairs of homologous chromosomes
homologous chromosomes
pairs made up of similar chromosomes
why do cells reproduce
grow and replace dead cells
shape and number of chromosomes in prokaryotic cells
1 circular dna molecules
type of division prokaryotic cells undergo
binary fission
organism with prokaryotic cells
bacteria
organism with eukaryotic cells
human
number of chromosomes in eukaryotic cells
differs; fruit fly:9, potato:48, onion: 16, humans: 46
if a cell has 30 chromosomes before motosis takes place, how many will it have after mitosis
still has 30
dehydrating food helps to preserve it. How would packing food in salt help to preserve it
osmosis occurs. water leaves cells of food and goes to salt, therefore keeps them dry. high to low
structure of dna and protein
chromosomes
organelles that release energy from food
mitochondria
fluid filled sac in a cell
vacuole
mitosis
cell division that results in two identical daughter cells that are like that parent cell
atp releases energy as...
heat
released energy is stored in...
atp
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