bio test 3 Flashcards
what is the slight charge of oxygen
negative
what is the slight charge of hydrogen
positive
are the oxygen and hydrogen bonds strong or weak
they are weak
what is hydrogen bonding
when a oxygen and and hydrogen charge bond together
what is it called when the same water molecules hang on to each other
cohesion
what is the one called where water is attracted to that glass
adhesion
is the droplet from a sink and things adhesion or cohesion
cohesion
the narrower the tube the more or less capillary action?
more
what are the three types of mixtures
solution, colloid, and suspension
what is it called when liquid flows through a narrow action
capillary action
what is a solution
a homogenous mixture when 2 or more substances are dissolved together
what is the salt called in solution, and what is water
solute, solvent
what is a colloid
A mixture in which very small particles of one substance are distributed evenly throughout another substance
can you actually see a colloid
yes
what is a suspension
a suspension is a heterogenous mixture, it separates over time. A great example is oil and vinegar or sand and water.
what does gravity do to suspension mixture
it separates them
what ions make up the acid
hydrogen ion
what ion makes up the base
hydroxide ion
what if the ph is at 1 or 2 or 0
it would be very acidic
whats another word for base
alkali
what if the ph was near 14
very basic
what ph is around 8 or 9
weak base
what ph is around 7
neutral
what is a neutralization reaction
when you take an acid and a strong base and it turns into neutral.
what are buffers
a system in our bodys that helps us keep a good ph level
why do we have buffers
to regulate the ph level
what chemical has one carbon and four hydrogen atoms
methane
which chemical has two carbons in a row
ethane
what chemical would it be if there was a double bond
ethene
triple bond
ethyne
what is octane
8 carbons long
what do a bunch of glucoses make
a starch
in polymerization which is the monomer and which is the polymer
glucose is monomer whicle starch is polymer.
what is the name for a large giant molecule
macromolecule
what are the four organic groups
carbohydrates, lipids, proteins, and nucleic acids
what are some examples of
carbohydrates
lipids
proteins
nucleic acids
starch, can sugar
fats, cholesterol,
tofu, enzymes
DNA,RNA
what is is called when you combine one glucose and another. what are you taking out
dehydration synthesis. taking out water
what is it called when two glucoses are combined
maltose
why dont lipids dissolve in water
because they are nonpolar
what are the two main parts of a triglyceride
glycerol and fatty acids
what fat is it when there are double bonds and which one is single bonds
unsaturated fat, saturated fat
what is it called when there are multiple double bonds
polyunsaturated fats
are polyunsaturated fats better or worse
the polyunsaturated are better
how many fatty acids are in the phospholipid
there are two because one is replace with a phosphate group
after you remove the water from glucose what does it become
moltose(dissacharide)
what is the name of the process in our body where water breaks down a compound
hydrolisis
what are the four types of nitrogenousu bases
AGCT( purines: adanine,guanine, pyremadies:cytosine thymine)
what is dna made of
phosphate, sugars(deoxyribose) and nitrogenous base
what did erwin chargoff discover
in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are equal.
what did rosalind franklin discover
that the double helix is the shape of a dna molecule
what is dna made of
nucleic acids,nucleotides,
what makes up cell membranes
phospholipids
what are on the two sides of amino acids
amine, and carboxyl group
