Living Environment
just type random things for password a few times and get access ANS:What is seen or measured.
Inference ANS:A conclusion based on observation or evidence.
Hypothesis ANS:An untested prediction.
A good hypothesis states both cause and effect ("If-then" statement).
Theory ANS:A broad explanation of natural events that is supported by strong evidence.
Controlled Experiment ANS:Compares the results of an experiment between two (or more) groups.
Experimental group ANS:Group being tested or receiving treatment. (ex: new drug)
Control group ANS:"Normal" group. Should be identical to experimental group in every way except one:
it does not receive the treatment (i.e.: no drug, or given the original drug or a placebo).
Placebo ANS:A sugar pill or other "fake" treatment give to the control group so subjects do not know
which group they are in.
Independent Variable ANS:Variable that is being tested (ex: new drug). In a graph the independent
variable is always plotted on the X axis.
Dependent Variable ANS:Variable that is measured at the end of an experiment; the results (ex: does
patient get better?) The dependent variable is always plotted on the Y axis.
Characteristics of a good experiment. ANS:1. Can be repeated by anyone and get the same results.
2. Have large sample size/many test subjects.
3. Are performed for longer periods of time.
4. Test only one variable.
5. Are peer reviewed - examined by several scientists to determine its accuracy.
6. Does not have to agree with the hypothesis. A scientist's guess is allowed to be incorrect - and usually
is.
7. Is objective - the experiment and conclusion are fair and unbiased. Fact and opinion are not mixed.
Features of Life ANS:1. Living things are made of cells.
2. Living things obtain and use energy.
, 3. Living things grow and develop.
4. Living things reproduce.
5. Living things respond to their environment.
6. Living things adapt to their environment.
7. Living things maintain homeostasis.
Homeostasis ANS:the ability of an organism to maintain a stable internal balanced environment. Failure
to maintain homeostasis causes death and disease.
Metabolism ANS:the sum of all the chemical reactions that occur within the cells of an organism.
Autotrophs ANS:(producers) make their own food by photosynthesis
Heterotrophs ANS:must eat something for food (consumers)
Photosynthesis ANS:- the process of storing the energy from the sun in the chemical bonds of glucose
(sugar). - Photosynthesis occurs mostly in the chloroplast of plant cells.
Formula for Photosynthesis: ANS:Sun + Carbon Dioxide + Water ------enzymes---- > Glucose + Oxygen +
Water
Organization of living things: ANS:[smallest] Cells -- Tissues -- Organs -- Organ Systems -- Organism
[biggest]
Organelles ANS:the small parts that make up a cell (each has at least one specific function)
Vacuoles ANS:store waste and water (large in plant cells, small in animal cells)
Mitochondria ANS:(The POWERHOUSE of the cell where energy is made) the Site of cellular respiration
in both plant and animal cells.
Formula for cellular respiration ANS:Sun's energy + carbon dioxide + water > glucose + water + oxygen
Nucleus ANS:the control center of the cell and contains DNA (the program or code of life)
Cytoplasm ANS:the liquid media that fills the cell.
Cell Membrane ANS:1. separates the contents of the cell from the outside environment
2. controls the transport of materials into and out of the cell. (selective permeability)
3. Cellular communication: Recognizes and responds to chemical signals by using receptor molecules.
Chloroplasts ANS:only in plant cells; where the process of photosynthesis occurs.
just type random things for password a few times and get access ANS:What is seen or measured.
Inference ANS:A conclusion based on observation or evidence.
Hypothesis ANS:An untested prediction.
A good hypothesis states both cause and effect ("If-then" statement).
Theory ANS:A broad explanation of natural events that is supported by strong evidence.
Controlled Experiment ANS:Compares the results of an experiment between two (or more) groups.
Experimental group ANS:Group being tested or receiving treatment. (ex: new drug)
Control group ANS:"Normal" group. Should be identical to experimental group in every way except one:
it does not receive the treatment (i.e.: no drug, or given the original drug or a placebo).
Placebo ANS:A sugar pill or other "fake" treatment give to the control group so subjects do not know
which group they are in.
Independent Variable ANS:Variable that is being tested (ex: new drug). In a graph the independent
variable is always plotted on the X axis.
Dependent Variable ANS:Variable that is measured at the end of an experiment; the results (ex: does
patient get better?) The dependent variable is always plotted on the Y axis.
Characteristics of a good experiment. ANS:1. Can be repeated by anyone and get the same results.
2. Have large sample size/many test subjects.
3. Are performed for longer periods of time.
4. Test only one variable.
5. Are peer reviewed - examined by several scientists to determine its accuracy.
6. Does not have to agree with the hypothesis. A scientist's guess is allowed to be incorrect - and usually
is.
7. Is objective - the experiment and conclusion are fair and unbiased. Fact and opinion are not mixed.
Features of Life ANS:1. Living things are made of cells.
2. Living things obtain and use energy.
, 3. Living things grow and develop.
4. Living things reproduce.
5. Living things respond to their environment.
6. Living things adapt to their environment.
7. Living things maintain homeostasis.
Homeostasis ANS:the ability of an organism to maintain a stable internal balanced environment. Failure
to maintain homeostasis causes death and disease.
Metabolism ANS:the sum of all the chemical reactions that occur within the cells of an organism.
Autotrophs ANS:(producers) make their own food by photosynthesis
Heterotrophs ANS:must eat something for food (consumers)
Photosynthesis ANS:- the process of storing the energy from the sun in the chemical bonds of glucose
(sugar). - Photosynthesis occurs mostly in the chloroplast of plant cells.
Formula for Photosynthesis: ANS:Sun + Carbon Dioxide + Water ------enzymes---- > Glucose + Oxygen +
Water
Organization of living things: ANS:[smallest] Cells -- Tissues -- Organs -- Organ Systems -- Organism
[biggest]
Organelles ANS:the small parts that make up a cell (each has at least one specific function)
Vacuoles ANS:store waste and water (large in plant cells, small in animal cells)
Mitochondria ANS:(The POWERHOUSE of the cell where energy is made) the Site of cellular respiration
in both plant and animal cells.
Formula for cellular respiration ANS:Sun's energy + carbon dioxide + water > glucose + water + oxygen
Nucleus ANS:the control center of the cell and contains DNA (the program or code of life)
Cytoplasm ANS:the liquid media that fills the cell.
Cell Membrane ANS:1. separates the contents of the cell from the outside environment
2. controls the transport of materials into and out of the cell. (selective permeability)
3. Cellular communication: Recognizes and responds to chemical signals by using receptor molecules.
Chloroplasts ANS:only in plant cells; where the process of photosynthesis occurs.
