BI255

BI 255 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Polarity a lack of electrical symmetry in a molecule; charge differences on opposite ends of a structure; ex. polar molecule H2O, oxygen has partial neg. charge (more E.N.) and hydrogen has partial pos. charge (less E.N.) Hydrogen bonds very weak bonds; occurs when a hydrogen atom in one molecule is attracted to the electrostatic atom in another molecule Electrostatic attraction the force of attraction between opposite electric charges H...

BIS 255 CH. 5 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Spyware Software that secretly gathers info about users while they browse the Web; should install anti-spyware software Adware Form of spyware that collects info about the user to determine which ads to display in user's Web browser. Install ad-blocking feature Phishing Sending fraudulent emails that seem to come from legitimate sources (ex. Bank); will redirect you and get your personal info Pharming Directing Internet users ...

BIS255 EXAM QUESTIONS AND ANSWERS LATEST UPDATE In the extreme programming environment, what allows programmers to detect and correct programming mistakes as they go, which is faster than correcting them after an entire program has been written Pair Programming During the maintenance phase of the software development life cycle, the maintenance team takes steps to keep the system up and running The systems development life cycle (SDLC) is also known as the Waterfall Model Legal Feasib...

BIS 255 EXAM QUESTIONS AND ANSWERS LATEST UPDATE What is development and use of a small, inexpensive working model of an information system, to help clients specify requirements, called? Prototyping What E-Commerce model do many newspapers and entertainment providers use, to have users purchase content through regular, recurring payments? Example: Wall Street Journal, ConsumerR Subscription Model What E-Commerce model is used by many "free" web sites to support themselves, such as...

BI255- TRANSCRIPTION AND TRANSLATION EXAM QUESTIONS AND ANSWERS LATEST UPDATE The Central Dogma states that DNA makes RNA, which then makes proteins - DNA encodes the information that makes proteins, and it is those proteins that do the work of the cell - RNA carries the information from DNA to the protein-making machinery of the cell RNA is similar but not identical to DNA - RNA is single-stranded - RNA uses a ribose sugar (2 -OH bonded to base) - RNA uses uracil (base pairs with...