ATI TEAS Exam with Questions and
Correct Answers 2025
All ,cells ,contain: ,- ,CORRECT ,ANSWER-DNA ,and ,RNA ,that ,can ,synthesize ,proteins
Each ,cell ,consists ,of: ,- ,CORRECT ,ANSWER-- ,nucleic ,acids ,
- ,cytoplasm ,
- ,cell ,membrane
cells--> ,tissues--> ,organs ,--> ,organ ,systems ,--> ,organism ,- ,CORRECT ,ANSWER-
Ribosomes ,- ,CORRECT ,ANSWER-involved ,in ,synthesizing ,proteins ,from ,amino ,acids
- ,some ,mobile, ,some ,embedded ,in ,rough ,ER
Golgi ,Complex ,(Golgi ,Apparatus) ,- ,CORRECT ,ANSWER-involved ,in ,synthesizing
,materials ,such ,as ,proteins ,
- ,located ,near ,nucleus// ,contains ,layers ,of ,membranes
Vacuoles ,- ,CORRECT ,ANSWER-sauces ,used ,for ,storage, ,digestion ,and ,waste
,removal
- ,plant ,cells: ,one ,large ,vacuole ,
- ,animal ,cells: ,numerous ,small ,vacuoles
Vesicle ,- ,CORRECT ,ANSWER-moves ,materials ,within ,a ,cell ,
- ,small ,organelle ,within ,a ,cell
Cytoskeleton ,- ,CORRECT ,ANSWER-consists ,of ,microtubules ,that ,help ,shape ,and
,support ,the ,cell
Microtubules ,- ,CORRECT ,ANSWER-part ,of ,the ,cytoskeleton ,and ,helps ,support ,the
,cell ,
- ,made ,of ,protein
Cytosol ,- ,CORRECT ,ANSWER-liquid ,material ,in ,the ,cell ,
,- ,mostly ,water
Cytoplasm ,- ,CORRECT ,ANSWER-general ,term ,that ,refers ,to ,cytosol ,and ,organelles
,found ,within ,the ,plasma ,membrane, ,but ,not ,within ,the ,nucleus
Cell ,membrane ,(plasma ,membrane) ,- ,CORRECT ,ANSWER-acts ,as ,a ,barrier ,to ,the
,cell
- ,helps ,keep ,cytoplasm ,in ,and ,substances ,located ,outside ,the ,cell ,out
- ,determines ,what ,is ,allowed ,in/out ,of ,the ,cell
Endoplasmic ,Reticulum ,- ,CORRECT ,ANSWER-- ,rough ,ER: ,has ,ribosomes ,on ,the
,surface
- ,Smooth ,ER: ,does ,not ,have ,ribosomes ,on ,the ,surface
Mitochondria ,- ,CORRECT ,ANSWER-generates ,ATP, ,involved ,in ,cell ,growth ,and
,death ,
- ,contains ,its ,own ,DNA ,that ,is ,seperate ,from ,that ,contained ,in ,the ,nucleus ,
- ,aerobic ,respiration ,occurs ,here ,
- ,inner ,membrane ,of ,mitochondria ,encloses ,matrix, ,which ,contains ,mitochondrial ,DNA
,(mtDNA) ,and ,ribosomes ,
- ,between ,inner ,and ,outer ,membranes ,are ,folds ,(cristae)// ,chemical ,reactions ,occur
,here
Four ,functions ,of ,Mitochondria ,- ,CORRECT ,ANSWER-1. ,production ,of ,cell ,energy ,
2. ,cell ,signaling ,
3. ,cellular ,differentiation ,(process ,where ,a ,nondifferentiated ,cell ,becomes ,transformed
,into ,a ,cell ,with ,a ,more ,specialized ,purpose) ,
4. ,cell ,cycle ,and ,growth ,regulation
Animal ,cell ,structure ,- ,CORRECT ,ANSWER-- ,Centrosome: ,compromised ,of ,the ,pair
,of ,centrioles ,and ,surrounded ,by ,protein. ,Involved ,in ,mitosis ,and ,cell ,cycle ,
- ,Centrioles: ,involved ,in ,cellular ,division// ,contains ,microtubules
- ,Lysosomes: ,digests ,proteins, ,lipids, ,carbohydrates. ,Transports ,undigested
,substance ,to ,the ,cell ,membrane ,so ,they ,can ,be ,removed
- ,Cilia: ,causes ,the ,cell ,to ,move ,
- ,Flagella: ,tail ,like ,structures ,on ,cell ,that ,use ,whip-like ,movements ,to ,help ,the ,cell
,move
Nuclear ,Parts ,of ,a ,Cell ,- ,CORRECT ,ANSWER-- ,Nucleus: ,contains ,chromosomes ,and
,regulates ,DNA ,of ,a ,cell. ,is ,the ,defining ,structure ,of ,eukaryotic ,cells. ,contains ,nuclear
,envelope, ,nucleoplasm, ,nucleolus, ,nuclear ,pores, ,chromatin ,and ,ribosomes ,
- ,Chromosome: ,threadlike ,rods ,of ,DNA. ,dna ,is ,the ,genetic ,material ,that ,stores ,info
,about ,the ,plant ,or ,animal ,
- ,Chromatin: ,consists ,of ,the ,DNA ,and ,protein ,that ,makes ,up ,chromosomes ,
- ,Nucleolus: ,involved ,in ,protein ,synthesis ,and ,synthesizes ,and ,stores ,RNA ,
, - ,Nuclear ,Envelope: ,encloses ,the ,structures ,of ,the ,nucleus. ,consists ,of ,inner ,and
,outer ,membranes ,made ,of ,lipids ,
- ,Nuclear ,Pores: ,involved ,in ,the ,exchange ,of ,material ,between ,the ,nucleus ,and
,cytoplasm ,
- ,Nucleoplasm: ,liquid ,within ,the ,nucleus ,(similar ,to ,cytoplasm)
Cell ,Membranes: ,- ,CORRECT ,ANSWER-- ,thin, ,semipermeable ,membrane ,of ,lipids
,and ,proteins. ,isolates ,the ,cell ,from ,its ,external ,environment ,
- ,consists ,of ,phospholipid ,bilayer ,(hydrophilic ,ends ,face ,external ,environment ,and
,inner ,layer ,facing ,inside ,of ,cell. ,Hydrophobic ,ends ,face ,each ,other. ,
- ,Cholesterol ,in ,cell ,membrane ,adds ,stiffness ,and ,flexibility. ,
- ,Glycolipids ,help ,cell ,recognize ,other ,cells ,of ,the ,organisms. ,
- ,proteins ,in ,cell ,membrane ,help ,give ,the ,cell ,shape.
Selective ,Permeability ,- ,CORRECT ,ANSWER-- ,cell ,membrane ,only ,allows ,small
,molecules ,to ,diffuse ,through ,(o2, ,h2o)
- ,molecules ,that ,are ,soluble ,in ,phospholipids ,can ,usually ,pass ,through ,cell ,membrane
Cell ,cycle ,- ,CORRECT ,ANSWER-- ,Mitosis: ,daughter ,cell ,is ,EXACT ,replica ,of ,parent
,cell ,
- ,Meiosis: ,daughter ,cells ,have ,different ,genetic ,coding ,than ,parent ,cell. ,only ,happens
,in ,gametes
Cell ,Differentiation ,- ,CORRECT ,ANSWER-- ,controlled ,by ,genes ,of ,each ,cell ,among ,a
,group ,of ,cells ,known ,as ,zygote. ,
- ,Example: ,gastrulation: ,an ,early ,phase ,in ,the ,embryonic ,development ,of ,most
,animals. ,during ,this ,process, ,cells ,are ,organized ,into ,3 ,germ ,layers ,(Ectoderm,
,mesoderm, ,endoderm). ,nervous ,system ,develops ,from ,ectoderm, ,muscular ,system
,develops ,from ,mesoderm, ,digestive ,system ,develops ,from ,endoderm.
Mitosis ,- ,CORRECT ,ANSWER-1. ,Interphase: ,cell ,prepares ,for ,division ,by ,replicating
,its ,genetic ,and ,cytoplasmic ,material. ,divided ,into ,G1, ,S, ,G2 ,
2. ,Prophase: ,chromatin ,thickens ,into ,chromosomes ,and ,nuclear ,membrane ,begins ,to
,disintegrate. ,Pairs ,of ,centrioles ,move ,to ,opposite ,sides ,of ,the ,cell ,and ,spindle ,fibers
,form. ,mitotic ,spindle ,moves ,chromosomes ,around ,within ,the ,cell ,
3. ,Metaphase: ,spindle ,moves ,to ,center ,of ,cell ,and ,chromosome ,pairs ,align ,along ,the
,center ,of ,spindle ,structure. ,
4. ,Anaphase: ,sister ,chromosomes ,pull ,apart. ,when ,they ,are ,seperated, ,they ,are
,called ,daughter ,chromosomes. ,
5. ,Telophase: ,spindle ,disintegrates, ,nuclear ,membrane ,reforms, ,chromosomes ,revert
,to ,chromatin. ,
6. ,Cytokinesis: ,physical ,splitting ,of ,the ,cell ,into ,two ,cells.
Meiosis ,- ,CORRECT ,ANSWER-1. ,interphase ,1, ,prophase ,1, ,metaphase ,1, ,anaphase
,1, ,telophase ,1, ,cytokinesis ,1; ,chromosomes ,cross ,over, ,genetic ,material ,is
Correct Answers 2025
All ,cells ,contain: ,- ,CORRECT ,ANSWER-DNA ,and ,RNA ,that ,can ,synthesize ,proteins
Each ,cell ,consists ,of: ,- ,CORRECT ,ANSWER-- ,nucleic ,acids ,
- ,cytoplasm ,
- ,cell ,membrane
cells--> ,tissues--> ,organs ,--> ,organ ,systems ,--> ,organism ,- ,CORRECT ,ANSWER-
Ribosomes ,- ,CORRECT ,ANSWER-involved ,in ,synthesizing ,proteins ,from ,amino ,acids
- ,some ,mobile, ,some ,embedded ,in ,rough ,ER
Golgi ,Complex ,(Golgi ,Apparatus) ,- ,CORRECT ,ANSWER-involved ,in ,synthesizing
,materials ,such ,as ,proteins ,
- ,located ,near ,nucleus// ,contains ,layers ,of ,membranes
Vacuoles ,- ,CORRECT ,ANSWER-sauces ,used ,for ,storage, ,digestion ,and ,waste
,removal
- ,plant ,cells: ,one ,large ,vacuole ,
- ,animal ,cells: ,numerous ,small ,vacuoles
Vesicle ,- ,CORRECT ,ANSWER-moves ,materials ,within ,a ,cell ,
- ,small ,organelle ,within ,a ,cell
Cytoskeleton ,- ,CORRECT ,ANSWER-consists ,of ,microtubules ,that ,help ,shape ,and
,support ,the ,cell
Microtubules ,- ,CORRECT ,ANSWER-part ,of ,the ,cytoskeleton ,and ,helps ,support ,the
,cell ,
- ,made ,of ,protein
Cytosol ,- ,CORRECT ,ANSWER-liquid ,material ,in ,the ,cell ,
,- ,mostly ,water
Cytoplasm ,- ,CORRECT ,ANSWER-general ,term ,that ,refers ,to ,cytosol ,and ,organelles
,found ,within ,the ,plasma ,membrane, ,but ,not ,within ,the ,nucleus
Cell ,membrane ,(plasma ,membrane) ,- ,CORRECT ,ANSWER-acts ,as ,a ,barrier ,to ,the
,cell
- ,helps ,keep ,cytoplasm ,in ,and ,substances ,located ,outside ,the ,cell ,out
- ,determines ,what ,is ,allowed ,in/out ,of ,the ,cell
Endoplasmic ,Reticulum ,- ,CORRECT ,ANSWER-- ,rough ,ER: ,has ,ribosomes ,on ,the
,surface
- ,Smooth ,ER: ,does ,not ,have ,ribosomes ,on ,the ,surface
Mitochondria ,- ,CORRECT ,ANSWER-generates ,ATP, ,involved ,in ,cell ,growth ,and
,death ,
- ,contains ,its ,own ,DNA ,that ,is ,seperate ,from ,that ,contained ,in ,the ,nucleus ,
- ,aerobic ,respiration ,occurs ,here ,
- ,inner ,membrane ,of ,mitochondria ,encloses ,matrix, ,which ,contains ,mitochondrial ,DNA
,(mtDNA) ,and ,ribosomes ,
- ,between ,inner ,and ,outer ,membranes ,are ,folds ,(cristae)// ,chemical ,reactions ,occur
,here
Four ,functions ,of ,Mitochondria ,- ,CORRECT ,ANSWER-1. ,production ,of ,cell ,energy ,
2. ,cell ,signaling ,
3. ,cellular ,differentiation ,(process ,where ,a ,nondifferentiated ,cell ,becomes ,transformed
,into ,a ,cell ,with ,a ,more ,specialized ,purpose) ,
4. ,cell ,cycle ,and ,growth ,regulation
Animal ,cell ,structure ,- ,CORRECT ,ANSWER-- ,Centrosome: ,compromised ,of ,the ,pair
,of ,centrioles ,and ,surrounded ,by ,protein. ,Involved ,in ,mitosis ,and ,cell ,cycle ,
- ,Centrioles: ,involved ,in ,cellular ,division// ,contains ,microtubules
- ,Lysosomes: ,digests ,proteins, ,lipids, ,carbohydrates. ,Transports ,undigested
,substance ,to ,the ,cell ,membrane ,so ,they ,can ,be ,removed
- ,Cilia: ,causes ,the ,cell ,to ,move ,
- ,Flagella: ,tail ,like ,structures ,on ,cell ,that ,use ,whip-like ,movements ,to ,help ,the ,cell
,move
Nuclear ,Parts ,of ,a ,Cell ,- ,CORRECT ,ANSWER-- ,Nucleus: ,contains ,chromosomes ,and
,regulates ,DNA ,of ,a ,cell. ,is ,the ,defining ,structure ,of ,eukaryotic ,cells. ,contains ,nuclear
,envelope, ,nucleoplasm, ,nucleolus, ,nuclear ,pores, ,chromatin ,and ,ribosomes ,
- ,Chromosome: ,threadlike ,rods ,of ,DNA. ,dna ,is ,the ,genetic ,material ,that ,stores ,info
,about ,the ,plant ,or ,animal ,
- ,Chromatin: ,consists ,of ,the ,DNA ,and ,protein ,that ,makes ,up ,chromosomes ,
- ,Nucleolus: ,involved ,in ,protein ,synthesis ,and ,synthesizes ,and ,stores ,RNA ,
, - ,Nuclear ,Envelope: ,encloses ,the ,structures ,of ,the ,nucleus. ,consists ,of ,inner ,and
,outer ,membranes ,made ,of ,lipids ,
- ,Nuclear ,Pores: ,involved ,in ,the ,exchange ,of ,material ,between ,the ,nucleus ,and
,cytoplasm ,
- ,Nucleoplasm: ,liquid ,within ,the ,nucleus ,(similar ,to ,cytoplasm)
Cell ,Membranes: ,- ,CORRECT ,ANSWER-- ,thin, ,semipermeable ,membrane ,of ,lipids
,and ,proteins. ,isolates ,the ,cell ,from ,its ,external ,environment ,
- ,consists ,of ,phospholipid ,bilayer ,(hydrophilic ,ends ,face ,external ,environment ,and
,inner ,layer ,facing ,inside ,of ,cell. ,Hydrophobic ,ends ,face ,each ,other. ,
- ,Cholesterol ,in ,cell ,membrane ,adds ,stiffness ,and ,flexibility. ,
- ,Glycolipids ,help ,cell ,recognize ,other ,cells ,of ,the ,organisms. ,
- ,proteins ,in ,cell ,membrane ,help ,give ,the ,cell ,shape.
Selective ,Permeability ,- ,CORRECT ,ANSWER-- ,cell ,membrane ,only ,allows ,small
,molecules ,to ,diffuse ,through ,(o2, ,h2o)
- ,molecules ,that ,are ,soluble ,in ,phospholipids ,can ,usually ,pass ,through ,cell ,membrane
Cell ,cycle ,- ,CORRECT ,ANSWER-- ,Mitosis: ,daughter ,cell ,is ,EXACT ,replica ,of ,parent
,cell ,
- ,Meiosis: ,daughter ,cells ,have ,different ,genetic ,coding ,than ,parent ,cell. ,only ,happens
,in ,gametes
Cell ,Differentiation ,- ,CORRECT ,ANSWER-- ,controlled ,by ,genes ,of ,each ,cell ,among ,a
,group ,of ,cells ,known ,as ,zygote. ,
- ,Example: ,gastrulation: ,an ,early ,phase ,in ,the ,embryonic ,development ,of ,most
,animals. ,during ,this ,process, ,cells ,are ,organized ,into ,3 ,germ ,layers ,(Ectoderm,
,mesoderm, ,endoderm). ,nervous ,system ,develops ,from ,ectoderm, ,muscular ,system
,develops ,from ,mesoderm, ,digestive ,system ,develops ,from ,endoderm.
Mitosis ,- ,CORRECT ,ANSWER-1. ,Interphase: ,cell ,prepares ,for ,division ,by ,replicating
,its ,genetic ,and ,cytoplasmic ,material. ,divided ,into ,G1, ,S, ,G2 ,
2. ,Prophase: ,chromatin ,thickens ,into ,chromosomes ,and ,nuclear ,membrane ,begins ,to
,disintegrate. ,Pairs ,of ,centrioles ,move ,to ,opposite ,sides ,of ,the ,cell ,and ,spindle ,fibers
,form. ,mitotic ,spindle ,moves ,chromosomes ,around ,within ,the ,cell ,
3. ,Metaphase: ,spindle ,moves ,to ,center ,of ,cell ,and ,chromosome ,pairs ,align ,along ,the
,center ,of ,spindle ,structure. ,
4. ,Anaphase: ,sister ,chromosomes ,pull ,apart. ,when ,they ,are ,seperated, ,they ,are
,called ,daughter ,chromosomes. ,
5. ,Telophase: ,spindle ,disintegrates, ,nuclear ,membrane ,reforms, ,chromosomes ,revert
,to ,chromatin. ,
6. ,Cytokinesis: ,physical ,splitting ,of ,the ,cell ,into ,two ,cells.
Meiosis ,- ,CORRECT ,ANSWER-1. ,interphase ,1, ,prophase ,1, ,metaphase ,1, ,anaphase
,1, ,telophase ,1, ,cytokinesis ,1; ,chromosomes ,cross ,over, ,genetic ,material ,is
