DAT Biology (ALL Practice Exam Questions) 100% Correct Answers | Verified | Latest 2024 Version

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? - 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? - Bryophyte In the fetal circulatory system, the ductus venosus allows blood to bypass? - Liver What would be the expected outcome if the acrosome of a mature sperm failed to develop? - Inability to penetrate zona pellucida IgA - Found in muccous, salivia, tears, and breast milk. Protects against pathogens IgD - Part of the B cell receptor. Activates basophils and mast cells IgE - Protects against parasitic worms. Responsible for allergic reactions IgG - Secreted by plasma cells in the blood. Able to cross the placenta into the fetus IgM - May be attached to the surface of a B cell or secreted into the blood. Responsible for early stages of immunity