Dat Biology (All Practice Exam Questions & Answers) 2024/2025

Dat Biology (All Practice Exam
nn nn nn nn nn




Questions & Answers) 2024/2025
nn nn nn nn

nn
nn

An nnorganism nnis nnfound nnduring nna nnbiopsy nnof nnlung nntissue. nnIt nnis nndetermined nnto
nnbelong nnto nnthe nngenus nnStreptococcus nnand nnis nnknown nnto nncause nntuberculosis.

nnWhat nntype nnof nnorganism nnis nnthis? nn- nnCORRECT nnANSWER-Bacteria nn
nn

A nnbotanist nnhas nndiscovered nna nnnew nnplant nnand nnnotes nnthat nnit nnis nnpredominantly
nnfound nnin nnits nngametophyte nnform. nnWhich nncategory nndoes nnthis nnplant nnmost nnlikely

nnbelong nnto? nn- nnCORRECT nn

ANSWER-Bryophyte nn
nn

In nnthe nnfetal nncirculatory nnsystem, nnthe nnductus nnvenosus nnallows nnblood nnto nnbypass? nn-
nnCORRECT nn
nn
ANSWER-Liver
nn

What nnwould nnbe nnthe nnexpected nnoutcome nnif nnthe nnacrosome nnof nna nnmature
nnsperm nnfailed nnto nn
nn
develop? nn- nnCORRECT nnANSWER-Inability nnto nnpenetrate nnzona
nnpellucida
nn

IgA nn- nnCORRECT nnANSWER-Found nnin nnmuccous, nnsalivia, nntears, nnand nnbreast nnmilk.
nnProtects nn
nn
against
nnpathogens
nn

IgD nn- nnCORRECT nnANSWER-Part nnof nnthe nnB nncell nnreceptor. nnActivates nnbasophils
nnand nnmast nn
nn
cells
nn

IgE nn- nnCORRECT nnANSWER-Protects nnagainst nnparasitic nnworms. nnResponsible nnfor
nnallergic nn
nn
reactions
nn

IgG nn- nnCORRECT nnANSWER-Secreted nnby nnplasma nncells nnin nnthe nnblood. nnAble nnto
nncross nnthe nn
nn
placenta nninto nnthe
nnfetus
nn

IgM nn- nnCORRECT nnANSWER-May nnbe nnattached nnto nnthe nnsurface nnof nna nnB nncell nnor
nnsecreted nninto nn
nn
the nnblood. nnResponsible nnfor nnearly nnstages nnof
nnimmunity.
nn

, Which nnprocess nnimmediately nnfollows nnthe nnpenetration nnof nnthe nncorona nnradiata nnby
nnsperm? nn-
nn
CORRECT nnANSWER-Acrosomal

nnreaction
nn

Describe nnhow nnthe nnendometrium nnis nnmaintained nnafter nnimplantation? nn-
nnCORRECT nn
nn
ANSWER-the nnplacenta nnsecretes nnchorionic nngonadotrophin
nn(hCG)
nn

Regulation nnof nnthe nnLac nnOperon? nn- nnCORRECT nnANSWER-When nnallolactose nnis
nnpresent, nnit nn
nn
binds nnto nnand nndeactivates nna nnrepressor
nnprotein
nn

Which nnof nnthe nnfollowing nnstatements nnis nntrue nnabout nnenergy nnuse nnby
nnthe nnbody?
nn
A. nnProtein nnis nnpreferentially nnutilized nnas nnan nnenergy nnsource
nnover nnfat


B. Fats nnhave nnthe nngreatest nnyield nnof nnATP nn
C. Most nnglycogen nnstores nnare nnin nnmuscle nn
D. Fat nnis nnpreferentially nnutilized nnas nnan nnenergy nnsource nnover nncarbohydrates nn
E. Amino nnacids nnare nnconverted nninto nnglucose nnfor nnuse nnas nnan nnenergy nnsource nn-
nnCORRECT nnANSWER-B. nnFats nnhave nnthe nngreatest nnyield nnof nnATP nn
nn

Alternative nnsplicing nnallows nnfor: nn- nnCORRECT nnANSWER-Creation nnof nnmultiple
nndifferent nn
nn
proteins nnfrom nnone nnRNA
nnstrand
nn

A nnwoman nnusing nnhuman nnchorionic nngonadotropic nnduring nnfertility nntreatment nnwould
nnexpect nnto nn


see nnstimulated nnproduction nnof nnwhich nnhormone nnas nna nndirect nnresult? nn- nnCORRECT
nnANSWER-
nn
Progesterone
nn

Allopatric nnSpeciation nn - nn CORRECT nn ANSWER-Speciation nn that nn occurs nn after nn a
nnpopulation nnis nn
nn
divided
nngeographically
nn

In nnresponse nnto nnlow nnblood nnglucose nnlevels, nn- nnCORRECT nnANSWER-ACTH nnis
nnreleased nnby nn
nn
the nnanterior

nnpituitary
nn