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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
what are quantitative data give two examples of quantitative dataquantitative data are data that can be calculated in numbersexamples contain the
a female frog has a genetic trait that stops it from producing eggs how likely is it that this trait will spread by the frog population explain your
if two organisms share the similar kingdom must they also share the similar domain explain two organisms that share the similar kingdom must also
what is natural selectionnatural selection is the method by which organisms that have certain favorable traits are better capable to survive and make
give an example of how two organisms are interdependentanimals generate carbon dioxide and water which is required by plants accept all reasonable
critical thinking the organization of a rock is much simpler than that of living things by what other criteria can a rock be well-known from living
contrast the reproduction of bacteria with that of frogs bacteria replicate asexually by splitting in two frogs reproduce sexually by producing sperm
why is it important to study biology by studying biology you can create informed decisions on issues that impact you and society like environmental
give a specific example of homeostasisan owl handles its body temperature by burning fuel to make body heat and by fluffing up its feathers to trap
dopamine is important for working memory and drug that increases the level of dopamine in the brain or facilities the action of dopamine enhances
both these neurotransmitter strengthen memory when they are released into the blood stream following learning stressful events stimulate release of