Scientific Method
What is quantitive data?
Data that is represented a number. (weight, height, length, etc)
What are the three units in the metric system?
meter, liter, gram
What is the most abundant molecule in every functioning living system?
water
what type of cells do not have a nucleus?
prokaryotes
what are the four macromolecules?
lipids, proteins, carbs, nucleic acids
Which group is the group that changes or adds the independent variable?
Experimental group
What unit would be used to measure the length of a soccer field?
meters
What is the attraction between like molecules?
cohesion
what type of reproduction involves a single parent where the cell will divide and produce an identical offspring?
asexual reproduction
what is the monomer and polymer of a carbohydrate?
monosaccharides and polysaccharides
What is a controlled experiment?
All experiments are only testing one variable so that you know which variable has an effect on something.
How many significant figures does 0.0123 have?
3 significant figures
What kind of bonds form between water molecules?
hydrogen bonds
what is homeostasis?
everything trying to stay in balance, example would be sweating so you shiver to bring your body back to normal.
what macromolecules are considered insoluble in water and are known as fats and oils?
lipids
What are the 5 steps of the scientific method in order?
1. observe and ask a question
2. make a hypothesis
3. design an experiment
4. collect and analyze data
5. Draw a conclusion
How do you write out dekaliters?
dkL
what happens to water molecules as it freezes?
the molecules expand
What is cellular respiration?
cells releasing chemical energy stored in food.
what elements are in proteins?
You are studying the effect of athlete performance when the athlete doesn't get a full 8 hours of sleep. What is the independent variable, dependent variable, control group, and experimental group?
independent variable- the amount of sleep
dependent variable- athlete performance
control group- group that gets 8 hours of sleep
experieemntal- group that will get less than 8 hours of sleep
Convert 6,000 mg to g.
6 grams
solvent- water
solute- salt
solution- salt water
name 3 of the 7 characteristics of living things.
1. all have cells
2. have DNA
3.grow develop and reproduce
4.respond to environment
5. maintain a stable internal environment
6. obtain and use material and energy to do things
7. capable of adaptation and evolution
what are the three subunits of nucleotides?
phosphate group, pentose sugar, nitrogen base.