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. Which process immediately follows the penetration of the corona radiata by sperm? - Acrosomal reactionDescribe how the endometrium is maintained after implantation? - the placenta secretes chorionic gonadotrophin (hCG) Regulation of the Lac Operon? - 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 B. Fats have the greatest yield of ATP C. Most glycogen stores are in muscle D. Fat is preferentially utilized as an energy source over carbohydrates E. Amino acids are converted into glucose for use as an energy source - B. Fats have the greatest yield of ATP Alternative splicing allows for: - Creation of multiple different proteins from one RNA strand A woman using human chorionic gonadotropic during fertility treatment would expect to see stimulated production of which hormone as a direct result? - Progesterone Allopatric Speciation - Speciation that occurs after a population is divided geographically In response to low blood glucose levels, - ACTH is released by the anterior pituitary In which group of organisms can simultaneous transcription and translation be observed? - Archaebacteria Which structure is the precursor for the androgens, estrogens, and progesterone molecules necessary for sexual development? - Cholesterol What is an agent that is made and released in response to pathog