BIO EOC PRACTICE TEST 2 QUESTIONS AND ANSWERS.

BIO EOC PRACTICE TEST 2
QUESTIONS AND ANSWERS | FALL
2026 | 100% CORRECT



1.,Which,of,the,following,resulted,from,the,invention,of,the,microscope?
A.,the,development,of,the,theory,of,evolution
B.,the,development,of,the,cell,theory
C.,proof,that,cells,can,form,spontaneously
D.,proof,that,all,cells,have,the,same,basic,structure,-,ans-✔✔B

2.,The,potato,famine,in,Ireland,(1845-
1852),occurred,when,a,fungus,escaped,by,chance,out,of,Mexico,and,into,North,America,a
nd,Europe.,The,fungus,,which,caused,crop-
destroying,potato,blight,,apparently,came,from,a,single,clonal,genotype,The,potato,popula
tion,was,probably,vulnerable,to,infection,by,this,fungus,because,of,which,of,the,following?
A.,lack,of,genetic,drift
B.,not,enough,organisms
C.,lack,of,genetic,variation
D.,balanced,polymorphism,-,ans-✔✔C

3.,Lipid,synthesis,is,carried,out,in,which,part,of,the,cell?
A.,smooth,endoplasmic,reticulum
B.,rough,endoplasmic,reticulum
C.,ribosomes
D.,lysosomes,-,ans-✔✔A

4.,In,hamsters,,the,gene,for,short,hair,(H),is,dominant,to,the,gene,for,long,hair,
(h).,Which,is,the,most,likely,genotype,of,the,parents,if,4,of,their,8,offspring,have,long,hair
A.,Hh,X,hh
B.,Hh,X,Hh
C.,HH,X,hh
D.,hh,X,hh,-,ans-✔✔A

5.,Which,of,hte,following,is,a,limiting,factor,that,is,density-independent?
A.,an,outbreak,of,disease
B.,a,forest,fire,caused,by,lightning
C.,immigration,of,new,predators

, D.,competition,for,scarce,resources,-,ans-✔✔B

6.,Which,of,the,following,classifications,includes,all,three,of,the,others?
A.,family
B.,genus
C.,phylum
D.,order,-,ans-✔✔C

7.,A,certain,enzyme,oxidizes,ethanol.,If,a,genetic,defect,prevents,the,enzyme,from,being,p
roduced,,which,outcome,do,you,predict,would,occur?
A.,Ethanol,would,undergo,reduction,,which,is,the,opposite,process,of,oxidation.
B.,The,oxidation,of,ethanol,would,proceed,only,in,certain,locations,in,the,cell.
C.,The,cell,would,employ,a,different,enzyme,to,oxidize,ethanol.
D.,The,oxidation,of,ethanol,in,the,cell,would,happen,very,slowly,or,not,at,all.,-,ans-✔✔D

8.,Which,of,the,following,is,a,key,difference,between,mitosis,and,meiosis?
A.,Mitosis,allows,for,genetic,variation,,while,meiosis,results,in,generations,of,organisms,wi
th,stable,characteristics
B.,Mitosis,produces,cells,that,are,almost,identical,genetically,,while,meiosis,produces,cells
,that,differ,genetically,from,each,parent,or,from,each,other.
C.,Mitosis,produces,cells,that,are,almost,identical,genetically,,while,meiosis,produces,cell
s,that,differ,genetically,from,each,parents,or,from,each,other
D.,Mitosis,has,two,cell,divisions,,while,meiosis,has,only,one.,-,ans-✔✔C

9.,Gymnosperms,,or,conifers,,scatter,their,seeds,by,which,of,the,following,methods?
A.,eaten,by,animals,and,dropped,in,feces
B.,carried,by,animals
C.,blown,by,the,wind
D.,all,of,the,above,-,ans-✔✔C

10.,Which,of,the,following,best,describes,osmosis?
A.,the,movement,of,water,molecules,out,of,a,cell,,resulting,in,cell,shrinkage
B.,the,movement,of,small,,uncharged,molecules,across,the,lipid,bilayer,to,a,state,of,equilib
rium
C.,the,movement,of,charges,molecules,and,larger,molecules,into,and,out,of,the,cell
D.,the,movement,of,water,molecules,across,the,selectively,permeable,plasma,membrane,
-,ans-✔✔D

11.,Look,at,the,marine,food,web,shown,below.,Phytoplankton,->,zooplankton,-
>,Menhaden,&,crabs,->,Lobster,,Shrimp,->,Crabs,&,Lobster.
The,removal,of,the,lobster,from,this,food,web,will,have,which,long-
term,effect,on,the,ecosystem?
A.,the,zooplankton,population,will,increase
B.,the,crab,population,will,increase
C.,the,shrimp,population,will,decrease
D.,the,phytoplankton,population,will,increase,-,ans-✔✔B