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contains
proteins
divides through
Nucleus
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which can be found on
which is a
CELLS
consist of
10.
contains
organelles
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which makes
Cell Membrane
15
which is
Lacross the
which contain
a form of
112
creates
enzymes
120
which allows for
+
19
used for
subtances
Word Bank: breaking down osmosis lysosomes mitochondria nucleolus endoplasmic reticulum vesicles ATP ribosomes | DNA
Insulin diffusion Golgi body | energy I export cytoplasm mitosis chromatin delivery system semipermeable

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.