Usabo exam - Study guides, Class notes & Summaries

USABO EXAM|867 QUESTIONS WITH VERIFIED ANSWERS

USABO Exam Questions With Complete Solutions

What enzyme does HIV use to convert RNA to DNA? - Ans Reverse Transcriptase The promoter region of a prokaryotic gene is located ______ to the gene and is the binding site for ______. - Ans 5'...RNA polymerase Which of the following is TRUE of prokaryotes? I. Simultaneous transcription and translation II. Presence of intron sequences III. Circular DNA - Ans I and III only

USABO Exam Questions and Answers

USABO semi-final part A&B Questions and Answers 100% Correct. 1) The recent SARS virus is a: a) Lentivirus b) Coronavirus c) Egtved virus d) Baculovirus e) Retrovirus 2) Which of the following cell organelles is typically identified by its sedimentation coefficient? a) Golgi apparatus b) Mitochondria c) Nucleus d) Nucleolus e) Ribosome 3) Timber companies plant trees right after clear-cutting. Which of the following ecological and/or evolutionary processes would, in principle, take...

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Biology USABO Exam Questions with Correct Answers The recent SARS virus is a: - Answer-Coronavirus Which of the following cell organelles is typically identified by its sedimentation coefficient? - Answer-Ribosome Timber companies plant trees right after clear-cutting. Which of the following ecological and/or evolutionary processes would, in principle, take too long for timber companies to wait for, if nature just took its course? - Answer-Succession Bird migration is probably initi...

Eukaryote - Ans An organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure thats sets them apart from prokaryotic cells is the nucleas or nuclear envelope within which the genetic material is carried. All species of large complex species are eukaryotes, including animals, plants and funghi. Euchromatin - Ans This shows as pale areas in the nucleas under electro magnification. It is a less densly packed form of chromatin; 10% is even l...

insterstitial fluid - Ans fluid located between cells and among tissues cuboidal epithelium - Ans cube shaped epithelial cells that function in secretion, and are located in various endocrine glands simple columnar epithelium - Ans lines intestines, secretes digestive juices and absorbs nutrients, one cell thick pseudostratified ciliated columnar epithelium - Ans forms a mucous membrane in portions of the respiratory tract; contains cilia that move the film of mucous