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how does the interaction between a carrier protein and the substance it transports resemble the interaction among an enzyme and its substrateboth
how do carrier proteins transport substances across cell membranes carrier proteins bind to a molecule of the substance on single side of the
what happens to the movement of molecules at equilibriumat equilibrium the movement of molecules continues but because there is no concentration
bacteria have a region known as a nucleoid in which their genetic material is located why then are bacteria classify as prokaryotesthe nucleoid is
determine the appearance of a plant cell when water is plentifulwhen water is plentiful the central vacuole expandsthe other organelles are pushed
what is plant cell walls made ofexplain the function of cell walls plant cell walls are made of cellulose embedded in carbohydrates and proteinscell
how are secondary cell walls different from primary cell wallsprimary cell walls are assembled on the surface of the plasma membrane whereas the cell
when lipid is added to a solution of a detergent in water the detergent breaks up large globules of the lipid into much smaller globules what effect
what is the cytoskeleton and what are three of its main componentsthe cytoskeleton is a network of long protein strands located in the cytosolthree
what roles do membrane proteins play in transporting only certain substances into a cellsome proteins form channels or pores by which certain
how are the organelles of a single cell like the organs of a multicellular organism name two features of eukaryotic cells that prokaryotic cells lack
why did it take 150 years for the cell theory to be developed after microscopes were inventedinformation about cells could not be understood and
what compound composes most of the cell membranehow is this compound suited to the function of the membranephospholipid composes most of the cell
explain how a water molecule is produced when glucose and fructose undergo a condensation reactionthe glucose molecule releases a hydroxide ion oh-
give an example of how a functional group can affect the elements of an organic compoundthe hydroxyl group on alcohols is polar and this produces
if a solution has a ph of 75 what would its new ph be if the concentration of h3o ions in the solution were increased by 100 times explain your
how are buffers significant to the functioning of living systemsby neutralizing small amounts of acid or base that might be added to a solution
sucrose or table sugar can react with water to produce two other compounds glucose and fructose though when you add sugar to a glass of water this
what does a two-direction arrow show in a chemical equationthe oxygen atoms share two pairs of electrons as every atom needs two more electrons to
what role do catalysts play in chemical reactionsby decreasing the activation energy that is required for a reaction a catalyst permits the reaction
the atomic number of argon is 18 will argon tend to form bonds with other elements describe your answer argon will not tend to form bonds with other
how many pairs of electrons do the two oxygen atoms in an oxygen molecule share with each other explain your answerthe oxygen atoms share two
a scientist wanted to study the effect of a drug on the blood pressure of rats she set up an experiment in which the experimental group consisted of
what are some of the things scientists may do to analyze data they may use statistics to determine relation- ships among variables compare the data
how are a hypothesis a prediction and an experiment related a prediction is a statement made in advance that declares the results that will be get