Why is myelin important in the nervous system? A. It allows signals to travel faster along axons because depolarization occurs only at myelinated locations. B. It allows signals to travel faster along axons because depolarization occurs only at nonmyelinated locations. C. It bundles the dendrites of adjacent neurons together. D. It increases capacitance across the cell membrane, which helps electrical signals to leave the axons. E. It traps neurotransmitters, increasing their concentratio...

USABO Open Exam 2023 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...

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

USABO-Review Questions and Answers 100% CorrectUSABO-Review Questions and Answers 100% CorrectUSABO-Review Questions and Answers 100% CorrectUSABO-Review Questions and Answers 100% Correct insterstitial fluid - ANSWER - fluid located between cells and among tissues cuboidal epithelium - ANSWER - cube shaped epithelial cells that function in secretion, and are located in various endocrine glands simple columnar epithelium - ANSWER - lines intestines, secretes digestive juices and absorbs n...

USABO Exam Questions and Answers 100% VerifiedUSABO Exam Questions and Answers 100% VerifiedUSABO Exam Questions and Answers 100% VerifiedUSABO Exam Questions and Answers 100% Verified Eukaryote - ANSWER - 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...

USABO Practice Questions and Answers 100% CorrectUSABO Practice Questions and Answers 100% CorrectUSABO Practice Questions and Answers 100% CorrectUSABO Practice Questions and Answers 100% CorrectUSABO Practice Questions and Answers 100% Correct What enzyme does HIV use to convert RNA to DNA? - ANSWER - Reverse Transcriptase The promoter region of a prokaryotic gene is located ______ to the gene and is the binding site for ______. - ANSWER - 5'...RNA polymerase Which of the following is ...

USABO Latest Update with Verified Solutions Eukaryote 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 This shows as pale areas in the nucleas under electro magnification. It is a less densly...