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Steady state of body function. Interplay between outside forces that tend to change an organisms internal control.
All living things are composed of cells.
Contains info for reprodution and develpment.
Difference between Hypothesis Science and Discovery Based Sci.
- Desctriptive, make and record observations.
- No Experiments
- MAke observations
- Ask Q
- Form hypothesis
Something that can chnage in an experiment.
Group you are testing hypothesis on.
Group that does not receive your treatment.
Things you keep the same between both groups
What happens in the past
Test both groups and follow them.
- Data that could be explaines by chnage.
- need large sample size.
Not letting scientist know what they are testing for.
- happens natural.
- How evolution works.
- How "fit" an organism is with his environment determines what traits will be passed on w/ greater traits.
Human modified of animals or plants.
Atomic Number =
Number of protoons
Atomic Mass =
# of protons + # of neutrons
Different forms of element that have the same # of protoons but different # of neutrons.
Charged aton or molecule.
- Outtermost electron shell.
- Largely determines the properties of one element .
- Elements w/ same # of valence electrons are in the same column on periodic table.
Transfer of electrons between elements/ compounds or slats.
Sharing of electrons between elements, strongest bond.
Non Polar (COVALENT)
Atoms share electrons equally.
Have opposite carges on opposite ends.
Importance of electronegativity
The power to attract electrong, oxyben is very electronegaive atom.
- occurs betwee polar molecules (Like water)
- Incicated by dotter lines in stead of solid lines.
- Weakes t of 3 types of bonds.
- Water hating.
- Does not dissolve in water.
- Often lipids and fats.
- Forms separate layer.
Substance being dissolved
Misture of two or more substances.
What does pH scale measure
Power of hydrogen
What are pH acids
Donate H+ ions into solutions
What are pH Bases
Remove H+ from solutions
What do buffers do
- Minimize changes in pH when acids or bases ar added to solution.
- Acts as both a weak acid or weak base.
Carbs % for good diet
Fat % for good diet
Protein % for good diet
Imprtance of Carbs for diet
Important for physical avtivity
Made from smaller monomers
Importance of fats to our diet
- Need fats for cell membranes & nervous system function.
- Cholesterol used to make all sterois hormones.
- Serve as insulation to coserve body heat and provide cushion to vital organs.
- Fat soiluble vitamins (A,K,E) rely on fat for transport and storage.
Carbons are saturated (Filled ) w/ hydrogens
Less Hydrogen; replaces with carbon , double bonds.
what Are steroids
Common structure composed of four-ring carbon units. Examples: Cholesterol.
In conditions of Hypothermia
Sweating will occur
Mitochondria are membrane-bound organelles in cytoplasm in which:
Energy rich molecules are broken down, using Oxygen, to provide energy for cell activities.
glucose has a higher concentration outside of a muscle cll compared to inside. This process by which glucose will enter is
A hydrogen bond
- Can involve two diff. polar molecules.
- Is weker than a covalent bond.
- Can involve water molecules
- can occur between molecules.
Panceatic produce a large amount of insulin (A protein). these cells would be expected to contain a large amound of ________ compared to other cells.
Rough endoplasmic reticulum.
Nonpolar molecules such as lipics are good examples of
Hydrolosis is a process in which a molecule.
Is broken into two molecules by additon of water molecule across a bond.
The molecule CH2OH
In regard to lipids, the term unsaturated refers to
The presence of double bonds between adjacent carbon atoms in a fatty acid.
Each amino acid differs from others in the
chemical structure of the R group.
An decrease of cholesterol within a cell membrane will.
Increase the fluidity of the membrane.
Element listed below which is NOT among the four most frequently found elements in living matter:
Potassium has one electron in tis outtermost shell. Therefore, to complete its outer shell, potassium is most likely to.
Lose one electron.
- Have 7 gain one.
- 1 or 2 loose one.
If we remove 1 neutron from potassium we will:
Create a potassium isotope.
Type of chemical bond in which electrons ar shared by wo atoms:
Low glycemic carbohydrates
Are slowly absorbed into the blood.
The assiciation of proteins with multiple subpoints to function (Like hemoglobin) is considered.
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