sl bio 1.1

practice with IAM

100 km = ______ m

100000

.5 nm = _______ um

0.0005

kids hate…

khDudcm__u__n

cell theory states that: all _______ ________ are composed of cells, the cell is the __________ unit of _______, and cells only arise from pre-existing _______

living things smallest life cells

what are the characteristics of life

metabolism response homeostasis growth reproduction excretion nutrition

characteristic of life: metabolism: ________ __________ reactions such as ___________

enzyme catalyzed respiration

characteristic of life: response: organisms respond and ________ with the ___________

interact environment

characteristic of life: homeostasis: regulation of ________ _________, such as ______________

internal characteristics thermoregulation

characteristic of life: growth: organisms can ________ size and _______

change shape

characteristic of life: reproduction: organisms can sexually or __________ produce __________

asexually offspring

characteristic of life: excretion: _________ of __________ ______

removal metabolic waste

characteristic of life: nutrition: organisms are fed either by synthesis of organic molecules (_____________) or __________ of ________ __________

photosynthesis absorption organic matter

disproves cell theory: sirated ________ ______, they are very large and have multiple nuclei

muscle cells

disproves cell theory: fungal _______: large (stretches for several miles) and has multiple nuclei

hyphae

disproves cell theory: giant _______: huge (several miles), miltinucleated with no division

algae

explain the important of surface area to volume ratio as a factor for limiting cell size

• the _____ __ __________ of a cell is a function of its mass/volume

• the _____ __ _________ _________ in and out of a cell is a function of its surface area

• as the cell grows, _________ increases faster than ________ (leading to a decreased SA:V ratio)

• if the _______ _______ is greater than the _____ __ ________ of vital materials and waste, the cell will eventually ___

• this means that the cell must _______ in order to restore a good SA:V ratio and survive

• cells and _______ specialized for gas or material exchange (example: ________) will increase their surface area to optimize _________ __ __________

rate of metabolism rate of material exchange volume surface area metabolic rate rate of exchange die divide tissues alveoli transfer of materials

emergent properties: the _______ of an organism is greater than the sum of its ______

whole parts

unicellular: _____ cell such as bacteria

one

multicellular: ____ cells such as butterfly

many

acellular: ____ cells such as virus

no

cell theory: cells are the smallest unit of life:

cell theory: all living things are composed of cells or cell products:

cell theory: cells only arise from preexisting cells:

as the volume of a cell increases, production of waste products _______, usage of nutrients and oxygen _______, and the surface area: volume ratio _______

increase increase decrease