What kind of bonds do water molecules form?
hydrogen bonds
covalent bonds
ionic bonds
Chemical reactions do not create or destroy matter; they REARRANGE it.
What is cohesion?
tendency of molecules of the same kind to stick together
clinging of one substance to another
What is adhesion?
Because of waters hydrogen bonds, water has...
has a stronger resistance to temperature change
cohesion
adhesion
easier to heat up
slower to evaporate
What is a solvent?
the dissolving agent?
the substance that is dissolved?
What is the solute?
substance that is dissolved?
What are the most common elements in the body?
Sulfur
Hydrogen
Calcium
Lead
Phosphorus
Oxygen
Magnesium
Nitrogen
Carbon
Silicon
Bonds within a molecule are called?
intramolecular bonds
intermolecular bonds
Bonds between molecules are called?
What are ionic bonds?
the sharing of electrons
electron exchange
What are covalent bonds?
share electrons
An acid is a substance that donates to a solution (exp. hydrochloric acid)
A base is a substance that reduces the concentration of a solution by adding molecules.
ph scale stands for:
is used to break polymer bonds
What are monomers for carbohydrates?
monosaccharides
glycerol
amino acids
nucleotides
fatty acids
Carbohydrates are made of which make which make using .
Monomers are linked together form polymers by , a reaction that removes a molecule of .
Glucose is a...
polysaccharide
monosaccharide
disaccharide
To form a disaccharide, one monomer gives up a group and the other one gives up a atom.
to make an amino acid what else is necessary?
carboxyl
amino group
r group
fatty acid
nucleotide
What is necessary to form a nucleotide in DNA?
deoxyribose (5 carbon sugar)
ribose (5 carbon sugar)
phosphate group
carboxyl group
nitrogen base
This is an unsaturated fatty acid.
The functions of lipids are...?
Insulation of the body
Quick Energy
Genetic Material
Support and protection of vital organs
Long term energy storage
Immune System
The function of nucleic acids are...?
The energy coin (ATP)
Structure
Genetic material
Protect vital organs
Lipids are made of...
Starch is found in plants and serves as a glucose bank. The plant can withdraw glucose for energy or building materials.
Chitin is a structural used by insects and crustaceans to build their exoskeletons. It is also found in the of fungi.
is the most abundant compound. Component of the tough cell walls that enclose plant cells.
Another name for a fat is triglyceride.
Which ones are the reactants? HCI +NaOH=NaCl +H20
NaCl +H2O
NaCl + HCI
HCI + NaOH
What cells store fats?
Muscle
Immune
Red Blood Cells
Adipose
In a phospholipid: the heads are , and the tails are .
Disaccharides are used for...
quick energy
transfer
energy storage
structure
To test for glucose you would use...
Iodine
Buirets
Benedicts
To test for starch you would use...
The two DNA strands are held together by ionic bonds.
Functions of protein include...
enzymes
transportation
immune system
chemical messengers
receptors
Polypeptides are made of..
covalent peptide bonds
ionic peptide bonds
hydrogen peptide bonds
❌ proteins are usually enzymes. ❌ protein are usually hair, tendons, etc.
Shape determines of a macromolecule
To test for protein you use...
Biurets
In DNA: forms 2 bonds with and and form 3 bonds with each other.
is when the R-Group interactions are "broken". Causing a protein to lose its ability to function.
Causes for denaturation...
salinity
high temp
freezing
change in pH
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