DAT Questions from Practice Exams 2023 with 100% correct answers

If a toxin that disrupted microtubule function, what is most likely to be affected? Anaphase Where are lysosomes produced? Golgi What is the function of a lysosome? Contains digestive enzymes for breaking down nutrients, cell debris, and bacteria What is the functional equivalent of the lysosome in plants? Central vacuole What are 4 possible places were microfilaments can be found? 1. Muscle cells 2. Pseudopod of amoeba 3. Cleavage furrow during animal division 4. Cytoskeleton What is bacteria flagellum composed of? Flagellin What is Clathrin? A protein that coats vesicles and plays a critical role in their formation, as well as their incorporation into the cell membrane during exocytosis and endocytosis What is a nucleoid region? Region where DNA exists in a bacterial cell as it does not have a nucleus What are teichoic acids? Found only on gram-positive bacteria and help keep the cell wall rigid. Also used a recognition and binding sites by bacterial viruses During conjugation, what does the donor bacteria contain? The F plasmid Which of the following best defines a notochord? A. A component that eventually develops into the spinal cord B. A length of cartilage extending along the body, which will become the spine C. That which will become the pharynx gills, or other feeding system in the animal D. A groove located in the underside of the pharynx that produces mucus in filter-feeding species B. A length of cartilage extending along the body, which will become the spine What are the 4 main features during their development that chordates share? 1. Notochord 2. Dorsal hollow nerve chord 3. Pharyngeal gill slits 4. Muscular post-anal tail Characteristics of Nematoda Complete digestive system, triploblasts with bilateral symmetry, pseudocoelomates. Parasitic; contain a thick protective outer layer known as the cuticle Examples: round worms, hook worms, and C.elegans Characteristics of Annelida Complete digestive system Triploblasts with bilateral symmetry Coelomates with segmented bodies Close circulatory systems Examples: Earthworms and leeches