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helps materials get in and out of the cell
- -cells needing lots of energy need alot
- -cells needing little energry need little
- -double membraned
a small cavity in the cytoplasm of a cell, bound by a single membrane and containing water, food, or metabolic waste.
what Chloroplasts and Leucoplasts have
- -where ribosomes are made
- -rich in RNS and protein
where photosynthesis takes place
a particle in the cytoplasm of a cell containing a number of digestive enzymes capable of breaking down most of the constituents of living matter
what are the two types of Ribosomes?
- E.R. Ribosomes: bound
- Cytoplasmic Ribosomes:Free
- selective barrier, thereby regulating the cells chemical composition
- -lipid bilayer
- -acts as a liquid
Chemosyntheic autotroph is for who?
bacteria that get energy from chemicals
- whiplike extension of certain cells that make movement.
- -beat in series
- -spiral like bullet
- -carry up
phototrophic is for who?
- -get energy from light
special centers that produce and organize micro tubules
- Rich in RNA
- Some on ER
- Two types
- chemical composition
- different fomr outside the cell
- outside of the nucleus
four classes of organic compounds that make up organisms.
- 4. Nucleic
- cell drinking
- -Grabbing water
factos that determing what gets in and out of a cell
- 1. size of molecule
- 2.Chemical composition
Carbs are made of....
what are lipids made of
what proteins are made of
Nucleic Acids are made of
Sugar, nitrogren containing base, one or more phosphate groups.
Characteristics of Life
- movement, response to stimuli
- receiving energy
what do carbs do?
What do lipids do?
organissm that gets its energy from another organisms
the study of Life
orgamisms that do not rely on other organisms for energy
What do proteins do?
- -enzymes-speed up reaction
No proof, descriptive, and organization
Can be disproven
Has not been disproved yet, scientific fact
pathways for information to flow from control center into cell where enzymes will be made
- -Ships Cells out
- -Packaging proteins for the cell
Active processes can only occur in
membrane bound structure that contains ther cell's hereditary info and controls the cells growth and reproduction
movement of large non fatty molecules through protein channels where the protein litterally changes shape
materials wrapped in fat diffusing across the membrane
the opposite direction of salts
Faster it moves
the hotter the particle
air liquid and solid
diffusion can occur in
particles move from an area they are concentrated to an area where they are less concentrated untill there is an equal number of particles in each area
diffusion of a dissolved salt across a semipermeable membrane
diffusion of water across a semipermeable membrane
the slower it moves
the larger the particle
Cell theory States
all organisms are made of cells or cell products and cells arise only from existing cells
the fundememtal unit of life
add water to break a molecule apart
- -enzyme carriers
- -enzyme helpers
- -building blocks of DNA and RNA
all the genes in a population
a group of orgamisns of the same species who live in a specific location and breed with one another more often than they breed with others
a group of individuals that were either actively or potenitally interbreaking with one another but now with other groups
populations grow faster than their food supply
Theory of acquired characteristics. animals evolve
Errors that occur in DNA
change in allele frequencies in a population due to chance alone.
the movement of alleles into and out of a population as by indiviual that immigrate and emigrate
a process of evolution in which individuals of a population who vary in details of heritable traits survive and reproduce with differing success
Change in allele frequencies that occurs after a small umber of individuals establish a new population
reduction in population size so severe that it reduces genetic diversity
1. no natural selection 2. no mutation 3. No genetic drift 4. random mating 5. no gene flow
a change in the frequent of certain genes in apopulation from generation to generation
the formation of a new species
the formation of a new specices while in constanst contact with the parental species. only plants do this
when a new species is formed from a small population that is isolated from its parental populations most likele to occur in species that are widely siztributed and highly variable
mode of natural selection in while intermediate phenotypes are favored over extremes
mode of natural selection in which phenotypes at one end of the range of variation are favored
mode of natural selection that favors two forms in a rages of variations. Intermediate forms are selected against
Similar body structures that reflect shared ancesty among lineages
similar body structures that evolve separately in different lineages
believe that life has some components that cannot be understood.
believe that life is primarily chemical and that is can be explained in chemical terms
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