BIOLOGICAL SCIENCE 8TH EDITION QUESTIONS AND CORRECT ANSWERS 2025
LATEST VERSION 100% GUARANTEED
QUESTION :Phagocytosis relies on the ability to what? -Ans.The ability of the microtubules to
disassemble and reorganize
QUESTION :What are the purines and pyrimidines? Is uracil a purine or pyrimidine? -Ans.Purines:
guanine and adenanine
Pyrimidine: cytosine and thymine
Uracil is a pyrimidine
QUESTION :When does bone resorption occur? -Ans.It occurs when blood Ca is too low
QUESTION :Aldosterone is a hormone released by what? -Ans.The adrenal glands
QUESTION :How to physiologically normal kidneys respond to aldosterone? -Ans.They increase the
reabsorption of Na and water which leads to an increase in blood volume and thus blood pressure
QUESTION :What links bases together to form a double helix? -Ans.ester bonds formed between
phosphate of one nucleotide with sugar of other nucleotide
QUESTION :Proteins are naturally synthesized starting from what end? and then end synthesizing
where? -Ans.amino terminal end; carboxyl end
QUESTION :In bacteria, if they are transformed so serious enough that their phenotype changes,
what probably caused this change? -Ans.Addition of nucleic acids from the bacteria they were
transformed with
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,QUESTION :What are the two components of alanine that make it basic and acidic? -Ans.NH3(+) =
basci; -COOH = acidic
QUESTION :If cmpds are oriented with their respective priorities in the counterclockwise position
what is the configuration? What about if it is clockwise? -Ans.S;R
QUESTION :Consider the question before but what if the lowest priority group is sticking outward
(solid wedge), in both cases? -Ans.You have to reverse it so if counterclockwise but lowest priority is
on solid wedge it would be R and then clockwise would be S
QUESTION :If a cmpd has the highest melting point it also has the highest what? -Ans.Freezing point
QUESTION :In a chair conformation of a six-carbon ring, what happens if there is an OH in axial
position and another cmpd with OH in axial position? What if the position of the cmpd with the OH
group was equatiorial instead? -Ans.that cmpd with OH can be stabilized by H bonding with the OH
group; it would not be able to be stabilized and thus be a weaker acid than the other cmpd that can
be stabilized by H bonding with OH
QUESTION :One equivalent of PhMgBr can do what to a cmpd? What will H3O+ do? -Ans.It can
deprotonate the hydroxy group in the cmpd and two equivalents will add to the other cmpd such as
an ester, producing a new MgBr salt at the newly formed hydroxide; it will protonate these two
hydroxy groups
QUESTION :Do bacterial cells and human cells both have cell walls? -Ans.No, only bacterial cells do,
humans have a cell membrane
QUESTION :Most bacterial chromosomes are ______ while human chromosomes are _______ -
Ans.circular; linear
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, QUESTION :What is common to both bacteria and humans? Why is this? -Ans.They can both
produce ATP by means of ATP synthase; both possess a membrane-embedded electron transport
chain capable of generating an H+ gradient which drives synthesis of ATP via ATP synthase
QUESTION :Where does ATP synthesis take place in human and bacterial cells? -Ans.Human -- inner
mitochondrial membrane
Bacterial -- on the plasma membrane of bacteria
QUESTION :Is the chemical composition of ribosomes the same in bacteria and human? -Ans.No it is
distinct enough that several types of antibiotics are able to preferentially target prokaryotic
ribosomes over eukaryotic ribosomes
QUESTION :If the slope of one line is steeper than another line what does that indicate in regards to
time? -Ans.It is growing faster with respect to time
QUESTION :What is a key criterion an organism must meet before it can be declared the infectious
agent responsible for causing a particular disease or condition? -Ans.demonstrating that the putative
infectious agent is capable of causing the disease or condition in an organism that was healthy prior
to the exposure to the agent
QUESTION :What kind of muscles contain striated muscle fibers? -Ans.cardiac and skeletal muscle,
not smooth
QUESTION :The uterus, arteries/veins, and small intestine are made of what type of muscle? -
Ans.smooth
3|Page
LATEST VERSION 100% GUARANTEED
QUESTION :Phagocytosis relies on the ability to what? -Ans.The ability of the microtubules to
disassemble and reorganize
QUESTION :What are the purines and pyrimidines? Is uracil a purine or pyrimidine? -Ans.Purines:
guanine and adenanine
Pyrimidine: cytosine and thymine
Uracil is a pyrimidine
QUESTION :When does bone resorption occur? -Ans.It occurs when blood Ca is too low
QUESTION :Aldosterone is a hormone released by what? -Ans.The adrenal glands
QUESTION :How to physiologically normal kidneys respond to aldosterone? -Ans.They increase the
reabsorption of Na and water which leads to an increase in blood volume and thus blood pressure
QUESTION :What links bases together to form a double helix? -Ans.ester bonds formed between
phosphate of one nucleotide with sugar of other nucleotide
QUESTION :Proteins are naturally synthesized starting from what end? and then end synthesizing
where? -Ans.amino terminal end; carboxyl end
QUESTION :In bacteria, if they are transformed so serious enough that their phenotype changes,
what probably caused this change? -Ans.Addition of nucleic acids from the bacteria they were
transformed with
1|Page
,QUESTION :What are the two components of alanine that make it basic and acidic? -Ans.NH3(+) =
basci; -COOH = acidic
QUESTION :If cmpds are oriented with their respective priorities in the counterclockwise position
what is the configuration? What about if it is clockwise? -Ans.S;R
QUESTION :Consider the question before but what if the lowest priority group is sticking outward
(solid wedge), in both cases? -Ans.You have to reverse it so if counterclockwise but lowest priority is
on solid wedge it would be R and then clockwise would be S
QUESTION :If a cmpd has the highest melting point it also has the highest what? -Ans.Freezing point
QUESTION :In a chair conformation of a six-carbon ring, what happens if there is an OH in axial
position and another cmpd with OH in axial position? What if the position of the cmpd with the OH
group was equatiorial instead? -Ans.that cmpd with OH can be stabilized by H bonding with the OH
group; it would not be able to be stabilized and thus be a weaker acid than the other cmpd that can
be stabilized by H bonding with OH
QUESTION :One equivalent of PhMgBr can do what to a cmpd? What will H3O+ do? -Ans.It can
deprotonate the hydroxy group in the cmpd and two equivalents will add to the other cmpd such as
an ester, producing a new MgBr salt at the newly formed hydroxide; it will protonate these two
hydroxy groups
QUESTION :Do bacterial cells and human cells both have cell walls? -Ans.No, only bacterial cells do,
humans have a cell membrane
QUESTION :Most bacterial chromosomes are ______ while human chromosomes are _______ -
Ans.circular; linear
2|Page
, QUESTION :What is common to both bacteria and humans? Why is this? -Ans.They can both
produce ATP by means of ATP synthase; both possess a membrane-embedded electron transport
chain capable of generating an H+ gradient which drives synthesis of ATP via ATP synthase
QUESTION :Where does ATP synthesis take place in human and bacterial cells? -Ans.Human -- inner
mitochondrial membrane
Bacterial -- on the plasma membrane of bacteria
QUESTION :Is the chemical composition of ribosomes the same in bacteria and human? -Ans.No it is
distinct enough that several types of antibiotics are able to preferentially target prokaryotic
ribosomes over eukaryotic ribosomes
QUESTION :If the slope of one line is steeper than another line what does that indicate in regards to
time? -Ans.It is growing faster with respect to time
QUESTION :What is a key criterion an organism must meet before it can be declared the infectious
agent responsible for causing a particular disease or condition? -Ans.demonstrating that the putative
infectious agent is capable of causing the disease or condition in an organism that was healthy prior
to the exposure to the agent
QUESTION :What kind of muscles contain striated muscle fibers? -Ans.cardiac and skeletal muscle,
not smooth
QUESTION :The uterus, arteries/veins, and small intestine are made of what type of muscle? -
Ans.smooth
3|Page
