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

DAT Biology (ALL Practice Exam Questions & Answers) 2024/2025 An organism is found during a biopsy of lung tissue. It is determined to belong to the genus Streptococcus and is known to cause tuberculosis. What type of organism is this? - CORRECT ANSWER-Bacteria A botanist has discovered a new plant and notes that it is predominantly found in its gametophyte form. Which category does this plant most likely belong to? - CORRECT ANSWER-Bryophyte In the fetal circulatory system, the ductus venosus allows blood to bypass? - CORRECT ANSWER-Liver What would be the expected outcome if the acrosome of a mature sperm failed to develop? - CORRECT ANSWER-Inability to penetrate zona pellucida IgA - CORRECT ANSWER-Found in muccous, salivia, tears, and breast milk. Protects against pathogens IgD - CORRECT ANSWER-Part of the B cell receptor. Activates basophils and mast cells IgE - CORRECT ANSWER-Protects against parasitic worms. Responsible for allergic reactions IgG - CORRECT ANSWER-Secreted by plasma cells in the blood. Able to cross the placenta into the fetus IgM - CORRECT ANSWER-May be attached to the surface of a B cell or secreted into the blood. Responsible for early stages of immunity. Which process immediately follows the penetration of the corona radiata by sperm? - CORRECT ANSWER-Acrosomal reaction Describe how the endometrium is maintained after implantation? - CORRECT ANSWER-the placenta secretes chorionic gonadotrophin (hCG) Regulation of the Lac Operon? - CORRECT ANSWER-When allolactose is present, it binds to and deactivates a repressor protein Which of the following statements is true about energy use by the body? A. Protein is preferentially utilized as an energy source over fat