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what is the metric unit for volume?: liter
proteins are polymers formed from...: amino acids
a tissue is composed of a group of...: similar cells
all life on earth exists in a region known as...: biosphere
a species whose population size is declining so rapidly that it could soon become extinct is...: endangered
the process by which organisms keep their internal conditions relatively stable is called: homeostasis
what factors decrease a population?: death rate and emigration
what is one abiotic factor?: pH
the center part on the chromosome that holds the sister chromatids together is called a...: centromere
one meter is equal to: 1000mm
the atomic number of an element is the same as the number of...: protons in an atom
mitosis occurs in all cells except...: sex cells
thie structure makes energy for the cell.: mitochondria
an example of a heterotroph (consumer) is...: bee
this structure has a digestive enzymes that eat away bacteria?: lysosome
an inference is...: a logical interpretation of an observation
a scientific theory is...: a well tested explanation that unifies a broad range of observations
the purpose of the spindle fibers is to...: pull the chromosomes apart
groups of different species that live together in a defined area make up a...: community
cancer cells form masses called...: tumors
true or false: enzymes are temperature and pH sensitive: TRUE
which scientist used the microscope to see the first cork cell?: robert hooke
which stage of cells life cycle does not occur during interphase?: mitosis
oven clean and ammonia are examples of a...: base
a solution is...: evenly distributed materials in water
the process of cell division results in...: two daughter cells
the average year-after-year conditions and temperature and precipitation of a particular region is called...: climate
which is not a metric unit?: pound
an example of a decomposer is...: mushroom
the rate at which materials enter and leave through the cell membrane depends on the cells...: volume
most cells are in this stage during the cell cycle.: interphase
to be useful in science a hypothesis must be...: testable
which are the reactants in the formula co2+h2o ----->h2co3: co2+h2o
the phases of mitosis are in the following order?: prophase, metaphase, anaphase, telophase
the term spontaneous generation means that...: living things can arise from nonliving matter
the largest and broadest among all the levels of organization is...: biosphere
head lice and crabs is and example of...: parasitism
"the worm is 2cm long": quantitative observation
a form of symbiosis in which both organisms benefit is called...: mutualism
what factors increase a population?: birthrate and immigration
the movement of water across a selectively permeable membrane is called...: osmosis
a species that enters an environment where it has not lived before is called an...: invasive species
the microscope that produces 3D images: scanning election microscope
in salt water table salt is the,,.and water is the...: solute; solvent
during cytokinesis, the plant cell...but in an animal cell...: produces a cell plate; the cell membrane pinches off
an instrument that produces images by focusing light rays is called a: light microscope
what is the boiling point of water in degree celsius?: 100
cell replication occurs in which cell part?: nucleus
an element that has the same number of protons but different number of neutrons is called...: isotope
the phase in mitosis where the chromosomes appear and uncoil.: prophase
the sum of the variety of organisms on earth is referred to as...: biodiversity
the phase in mitosis where the chromosomes are pulled apart.: anaphase
what is the metric unit for distance?: meter
Ozone depletion is caused by...: CFC's
the process in which two cells from different parents unite to produce the first cell of a new organism is called: sexual reproduction
the basic unit of life is the...: cell
true or false: animal cells contain chloroplast.: FALSE
which contries have reached exponential growth?: china, india, africa
which scientist created the cell theory that "all cells come from pre-existing cells"?: rudolf virchow
a tundra is and example of...: a biome
this structure is the "brain" of the cell and tells the organelles what to do.: nucleus
chemical bonds in a chemical reaction are...: rearranged
controlled experiments: only one variable is tested at a time
what is an example of a prokaryote cell?: coli bacteria
an example of an organ is...: skin
what regulates the timing of the cell cycle?: cyclin
which movement requires energy?: active
living things use this as its main source of energy.: carbohydrates
water is polar because...: there is and uneven distribution of electrons between the oxygen and hydrogen atoms
the number of valence electrons of the element carbon has....: 4 electrons
water consist of the atoms...: two hydrogen atoms and one oxygen atoms
a compound that produces hydrogen ions (H+) in solution is an: acid
passive transport...and an example is...: does not require energy; diffusion
the M phase of the cell cycle includes...: mitosis and cytokinesis
which includes all the other jobs?: biologist
autotrophs (plants) are organisms that...: use energy they take in from the environment to convert inorganic molecules into complex organic molecules
prokaryotes do not have a...: nucleus and organelles
a covalent bond is formed by the...: sharing of electrons
mitosis forms...: 2 identical daughter cells
an example of and autotroph (producer) is...: algae
the number of individuals of a single species per unit area is known as...: population density
animal cells will burst if...: lots of water move into the cell
ice floats because...: water expands when it is solid due to its bent structure
if an organism contains a nucleus, the organism is a...: eukaryote
true or false: a food web consists of many food chains: TRUE
catalysts and enzymes...: speed up chemical reactions and lower activation energy
what is an example of an organ system?: circulatory system
the surface to volume ration of a cell...as a cell decreases in size.: increases
if a population grows larger than the carrying capacity of its environment, the...: death rate may rise
sustainable development means that...: it is a way of using natural resources without depleting them
during the S phase, the chromosomes...: replicate to form sister chromatids
the world population increased during this time: industrial revolution
two or more different atoms combined in definite proportions is called...: compound
the series of steps in which a salmon eats small fish that has eaten algae is a...: food chain
this structure is responsible for the making and the assembly of proteins.: ribosome

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