Science Bowl Biology Exam Questions With Verified And Updated Answers

Science Bowl Biology Exam Questions With Verified And Updated Answers The purine bases are: A. adenine and guanine B. adenine and cytosine C. thymine and cytosine D. uracil, thymine, and cytosine - answerA 2. Four chromatids would be considered a: A. mutation B. non-disjunction C. tetrad D. synapses - answerC 3. Which of the following is NOT in the class insecta: A. bees B. moths C. fireflies D. spiders - answerD 4. Plant cells differ from animal cells in that only plant cells possess: A. a nucleus B. mitochondria C. a cell wall D. lysosomes - answerC 5. Which of the following has the lowest blood pressure: A. aorta B. carotid artery C. femoral artery D. posterior vena cava - answerC 6. Barbara McClintock is famous for discovering which of the following: A. the structure of DNA with Watson and Crick B. introns C. jumping genes D. exons - answerC 7. Which of the following is NOT true of the Calvin-Benson Cycle: A. it is also sometimes called the dark reactions of photosynthesis B. it is also sometimes called the light independent reactions of photosynthesis C. it converts energy trapped in the light reactions into sugar D. it does not require stores of potential energy - answerD 8. Proteins made up of two or more polypeptide chains are said to possess: A. a resistance to denaturation B. a quaternary structure C. a tertiary structure D. an enzymatic refractory period - answerB 9. The cytoskeleton of a cell is made of: A. microtubules, lignin, and microfilaments B. microtubules, intermediate filaments, and microfilaments C. microtubules, flagellin, and microfilaments D. pectins, intermediate filaments, and microfilaments - answerB 10. A good light microscope has a resolving power of about: A. 0.5 millimeters B. 0 .5 nanometers C. 0.5 microns D. 5 nanometers - answerC