25 terms

bio review

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why are viruses not considered organisms
cannot reproduce on their own, not made of cells , they are active in cell
virus
nucleic acid core surrounded by a protein coat (capsid)
viroids
single strands of rna that infect plants (smaller than viruses)
viruses
consist of rna/dna surrounded by a protein coat
prions
misshaped version of a protein found in the brain (smaller than virus and viroids)
ecological role played by some species of fungi and bacteria
they are decomposers
mutualism in lichens
fungi form a symbiotic relationship with algae or other photosynthetic organism
what do antibiotics cheese and wine all have in common
all commercial uses of fungi, fungi used to make these things
why do mosses have to live in moist habitats
dont have vascular tissue
difference between archaea and bacteria
some arcane molecules are similar to molecules in eukaryotic organisms
spherical bacteria
cocci
spiral bacteria
spirilla
rod bacteria
bacilli
what causes bacteria to stain positive or negative using gram stain
amount of peptidoglycan in cell walls causes them to stain diff
3 ways bacterial cells are different from human cells
cell walls made from carbohydrates and protein, have small loops of dna called plasmids, circular chromosomes
major organelle found in prokaryotes
ribosomes
what evolution process is responsible for antibiotic resistant bacteria
arises naturally in bacteria, natural selection
describe the circumstances that cause bacteria to reproduce rapidly using binary fission
favorable conditions- bacteria reproduce by binary fission
unfavorable conditions- bacteria form endospores to survive
why are gardeners enthusiastic about mycorrhizae
they grow around plants to help them obtain nutrients and water
what is unusual about the gametophyte portion of a moss life cycle
its the life cycle that is most noticeable, sporophyte is most noticeable in advanced plants
major advancement that ferns have over mosses
circular tissue
major advancement that gymnosperms have over ferns
reproduce with seeds
major advancements that angiosperms have over gymnosperms
seeds protected by a fruit
monocot seeds
one cotyledon one embryo
dicot seeds
two cotyledon one embryo
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