The lowest level of biological organization considered alive is the
cell
macromolecule
atom
proton
In general, the job of a buffer is to
make a solution less basic
maintain pH homeostasis
disrupt pH homeostasis
make a solution less acidic
pH describes the concentration of
Hydrogen ions (H+)
Water molecules relative to ions
Hydrogen gas (H2)
Hydroxide ions (OH-)
Water molecules form hydrogen bonds and "stick to each other because
the hydrogen atoms carry partial positive charges.
the oxygen atom carries a partial negative charge.
it is highly polar.
all of the above
Each atom of a given element always has the same number of
protons
neutrons
isotopes
electrons
ions
How is evolution different from the other characteristics of life?
It takes a long time
It operates differently for different species
It occurs in populations, not individuals
It only occurs in multicellular organisms
The bond between monomers in lipids is the
Glycosidic linkage
Peptide bond
Phosphodiester bond
Ester bond
How is carbohydrate use similar or different between plants and animals? Select the true statement below.
In animals, carbohydrates only have a structural role, while in plants, carbohydrates are used to store energy
Carbohydrates only have a structural role in both plants and animals
Carbohydrates play a structural role and an energy role in both plants and animals.
In animals carbohydrates only function in energy story, while in plants, carbohydrates only have a structural role,
How do phospholipids interact with water molecules?
The polar heads avoid water; non-polar tails attract water
The polar heads interact with water; the non-polar tails do not.
Phospholipids don't interact with water because water is polar and lipids are non-polar.
Phospholipids dissolve in water.
The ɑ-helix and ꞵ pleated sheet are examples of which type of protein structure?
Primary
Secondary
Tertiary
Quaternary
Reactions that use a water molecule to break a large molecule into smaller subunits are called reactions.
Condensation
Hydration
Hydrolysis
Dehydration synthesis
Which type of structure would result in a functional protein?
Denatured
The monomer of carbohydrates is the
Monosaccharide
Amino Acid
Fatty Acid
Nucleotide
