NLN NEX - Science Exam Questions with
complete solutions 2025
Fibrous .tunic
In .the .diagram, .the .area .labeled .2 .is .part .of .which .layer .of .the .eye?
Fibrous .tunic
Sensory .tunic
Reticular .tunic
Vascular .tunic
Sympathetic .nervous .system
After .playing .a .strenous .tennis .match, .a .player .experiences .increased .heart .rate,
.rapid .breathing, .and .dilated .pupils. .Which .branch .of .the .nervous .system .is
.responsible .for .these .responses?
Autonomic .nervous .system
Central .nervous .system
Sympathetic .nervous .system
Parasympathetic .nervous .system
Cerebral .Cortex
Amnesia .in .humans .is .the .loss .of .memory. .Which .of .these .parts .of .the .brain .has
.been .affected .when .someone .is .suffering .from .amnesia .cuased .by .head .trauma?
Medulla .oblongata
Spinal .Cord
Cerebellum
Cerebral .Cortex
Gastronemius .and .soleus
If .a .person .cannot .stand .on .tiptoes, .which .muscles .may .be .too .weak?
Rectus .femoris .and .vastus .medialis
Pectoralis .major .and .subclavius
,Gastronemius .and .soleus
Biceps .femoris .and .semimembranosus
Is .where .most .of .the .cell's .chemical .reactions .take .place
All .living .cells .contain .cytoplasm, .which .is .important .b/c .it...
Carries .hereditary .traits
Produces .protein
Is .where .most .of .the .cell's .chemical .reactions .take .place
Controls .what .moves .in .and .out .of .the .cell
Fewer .cones .and .a .greater .concentration .of .rods .to .collect .the .minimal .light .for .night
.vision.
Most .vertebrates .have .cone .cells .in .their .eyes, .which .distinguish .colors .in .daylight.
.The .rods .are .more .sensitive .to .light, .but .do .not .distinguish .colors. .If .a .mamal .is
.nocturnal, .it .has .likely .evolved .to .have...
As .many .cones .as .there .are .rods .to .capture .the .colors .at .dusk/dawn
An .absence .of .cones .since .nocturnal .mammals .only .need .rods .to .see .black/white .at
.night
Fewer .cones .and .a .greater .concentration .of .rods .to .collect .the .minimal .light .for .night
.vision.
More .cones .than .rods .to .enable .them .to .see .the .muted .colors .at .night.
Diffusion
Whithin .a .living .cell, .the .oxygen .from .a .mixture .of .oxygen .and .carbon .dioxide .is .used
.up. .This .creates .a .concentration .gradient .across .the .cell .membrane .that .draws .in
.oxygen .across .the .cell .membrane .from .the .outside .to .the .inside .of .the .cell. .This
.process .is .known .by .which .of .these .terms?
Diffusion
Active .transport
Osmosis
Cellular .respiration
Lymphocytes
As .part .of .the .human .immune .response, .which .of .these .cells .are .responsible .for
.producing .antibodies?
Macrophages
Suppressor .cells
Helper .cells
Lymphocytes
Atlanto-occipital .joint
When .a .person .nods .their .head .yes/no, .which .joint .allows .for .that .movement?
Coxal .join
Atlanto-occipital .joint
Temporomandibular .joint
Glenohumeral .joint
, Crista .ampullaris
What .structure .within .the .area .labeled .as .B .contains .the .sensory .receptors .for
.dynamic .equilibrium?
Macula .sacculi
Spiral .organ
Crista .ampullaris
Macula .utriculi
Vertebral .column
If .a .person .has .a .lateral .curvature .of .the .spine, .which .anatomical .structure .is
.affected?
Thoracic .cage
Pelvic .girdle
Vertebral .column
Pectoral .girdle
Natural .selection
Charles .Darwin's .theory .of .evolution .suggests .that .the .reason .for .the .various
.differences .between .species .is .a .result .of..
The .use .or .disuse .of .body .structures
Exposure .to .mutagenic .agents
Natural .selection
Acquired .characteristics
Vas .deferens
Which .of .these .structures .carries .sperm .cells .from .the .testes .to .the .lower .part .of .the
.abdomen?
Urethra
Seminiferous .tubules
Vas .deferens
Epididymis
Buffer .region
(the .region .of .the .curve .where .pH .changes .little .with .each .addition .of .a .compound
.such .as .NaOH .is .the .buffer .region, .a .buffer .resists .changes .in .pH. .The .excess .acid
.region .is .relevant .to .a .titration .of .a .weak .base .- .strong .acid .titration.)
The .titration .curve .shows .a .weak .acid .- .strong .base. .What .does .the .region .in .Box .B
.represent?
Equivalence .point
Excess .acid .region
Buffer .region
Excess .base .region
complete solutions 2025
Fibrous .tunic
In .the .diagram, .the .area .labeled .2 .is .part .of .which .layer .of .the .eye?
Fibrous .tunic
Sensory .tunic
Reticular .tunic
Vascular .tunic
Sympathetic .nervous .system
After .playing .a .strenous .tennis .match, .a .player .experiences .increased .heart .rate,
.rapid .breathing, .and .dilated .pupils. .Which .branch .of .the .nervous .system .is
.responsible .for .these .responses?
Autonomic .nervous .system
Central .nervous .system
Sympathetic .nervous .system
Parasympathetic .nervous .system
Cerebral .Cortex
Amnesia .in .humans .is .the .loss .of .memory. .Which .of .these .parts .of .the .brain .has
.been .affected .when .someone .is .suffering .from .amnesia .cuased .by .head .trauma?
Medulla .oblongata
Spinal .Cord
Cerebellum
Cerebral .Cortex
Gastronemius .and .soleus
If .a .person .cannot .stand .on .tiptoes, .which .muscles .may .be .too .weak?
Rectus .femoris .and .vastus .medialis
Pectoralis .major .and .subclavius
,Gastronemius .and .soleus
Biceps .femoris .and .semimembranosus
Is .where .most .of .the .cell's .chemical .reactions .take .place
All .living .cells .contain .cytoplasm, .which .is .important .b/c .it...
Carries .hereditary .traits
Produces .protein
Is .where .most .of .the .cell's .chemical .reactions .take .place
Controls .what .moves .in .and .out .of .the .cell
Fewer .cones .and .a .greater .concentration .of .rods .to .collect .the .minimal .light .for .night
.vision.
Most .vertebrates .have .cone .cells .in .their .eyes, .which .distinguish .colors .in .daylight.
.The .rods .are .more .sensitive .to .light, .but .do .not .distinguish .colors. .If .a .mamal .is
.nocturnal, .it .has .likely .evolved .to .have...
As .many .cones .as .there .are .rods .to .capture .the .colors .at .dusk/dawn
An .absence .of .cones .since .nocturnal .mammals .only .need .rods .to .see .black/white .at
.night
Fewer .cones .and .a .greater .concentration .of .rods .to .collect .the .minimal .light .for .night
.vision.
More .cones .than .rods .to .enable .them .to .see .the .muted .colors .at .night.
Diffusion
Whithin .a .living .cell, .the .oxygen .from .a .mixture .of .oxygen .and .carbon .dioxide .is .used
.up. .This .creates .a .concentration .gradient .across .the .cell .membrane .that .draws .in
.oxygen .across .the .cell .membrane .from .the .outside .to .the .inside .of .the .cell. .This
.process .is .known .by .which .of .these .terms?
Diffusion
Active .transport
Osmosis
Cellular .respiration
Lymphocytes
As .part .of .the .human .immune .response, .which .of .these .cells .are .responsible .for
.producing .antibodies?
Macrophages
Suppressor .cells
Helper .cells
Lymphocytes
Atlanto-occipital .joint
When .a .person .nods .their .head .yes/no, .which .joint .allows .for .that .movement?
Coxal .join
Atlanto-occipital .joint
Temporomandibular .joint
Glenohumeral .joint
, Crista .ampullaris
What .structure .within .the .area .labeled .as .B .contains .the .sensory .receptors .for
.dynamic .equilibrium?
Macula .sacculi
Spiral .organ
Crista .ampullaris
Macula .utriculi
Vertebral .column
If .a .person .has .a .lateral .curvature .of .the .spine, .which .anatomical .structure .is
.affected?
Thoracic .cage
Pelvic .girdle
Vertebral .column
Pectoral .girdle
Natural .selection
Charles .Darwin's .theory .of .evolution .suggests .that .the .reason .for .the .various
.differences .between .species .is .a .result .of..
The .use .or .disuse .of .body .structures
Exposure .to .mutagenic .agents
Natural .selection
Acquired .characteristics
Vas .deferens
Which .of .these .structures .carries .sperm .cells .from .the .testes .to .the .lower .part .of .the
.abdomen?
Urethra
Seminiferous .tubules
Vas .deferens
Epididymis
Buffer .region
(the .region .of .the .curve .where .pH .changes .little .with .each .addition .of .a .compound
.such .as .NaOH .is .the .buffer .region, .a .buffer .resists .changes .in .pH. .The .excess .acid
.region .is .relevant .to .a .titration .of .a .weak .base .- .strong .acid .titration.)
The .titration .curve .shows .a .weak .acid .- .strong .base. .What .does .the .region .in .Box .B
.represent?
Equivalence .point
Excess .acid .region
Buffer .region
Excess .base .region
