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Exam (elaborations)

DAT Biology (ALL Practice Exam Questions & Answers) 2024/2025

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DAT Biology (ALL Practice Exam Questions & Answers) 2024/2025

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DAT Biology
Course
DAT Biology

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DAT Biology (ALL Practice Exam
Questions & Answers) 2024/2025
An90organism90is90found90during90a90biopsy90of90lung90tissue.90It90is90determined90to90
belong90to90the90genus90Streptococcus90and90is90known90to90cause90tuberculosis.90W
hat90type90of90organism90is90this?90-90CORRECT90ANSWER-Bacteria

A90botanist90has90discovered90a90new90plant90and90notes90that90it90is90predominantly9
0found90in90its90gametophyte90form.90Which90category90does90this90plant90most90likely9
0belong90to?90-90CORRECT90ANSWER-Bryophyte


In90the90fetal90circulatory90system,90the90ductus90venosus90allows90blood90to90bypass?90-
90CORRECT90ANSWER-Liver


What90would90be90the90expected90outcome90if90the90acrosome90of90a90mature90sperm9
0failed90to90develop?90-90CORRECT90ANSWER-
Inability90to90penetrate90zona90pellucida

IgA90-90CORRECT90ANSWER-
Found90in90muccous,90salivia,90tears,90and90breast90milk.90Protects90against90pathogens

IgD90-90CORRECT90ANSWER-
Part90of90the90B90cell90receptor.90Activates90basophils90and90mast90cells

IgE90-90CORRECT90ANSWER-
Protects90against90parasitic90worms.90Responsible90for90allergic90reactions

IgG90-90CORRECT90ANSWER-
Secreted90by90plasma90cells90in90the90blood.90Able90to90cross90the90placenta90into90the
90fetus


IgM90-90CORRECT90ANSWER-
May90be90attached90to90the90surface90of90a90B90cell90or90secreted90into90the90blood.90Res
ponsible90for90early90stages90of90immunity.

Which90process90immediately90follows90the90penetration90of90the90corona90radiata90by9
0sperm?90-90CORRECT90ANSWER-Acrosomal90reaction


Describe90how90the90endometrium90is90maintained90after90implantation?90-
90CORRECT90ANSWER-
the90placenta90secretes90chorionic90gonadotrophin90(hCG)

Regulation90of90the90Lac90Operon?90-90CORRECT90ANSWER-
When90allolactose90is90present,90it90binds90to90and90deactivates90a90repressor90protein
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