Streptococcus pneumoniae is:
A. called the meningococcus.
B. in the viridans group.
C. a gram positive diplococcus with a capsule.
D. a pathogen with endotoxin.
E. All of the choices are correct.
Answer: C. a gram positive diplococcus with a capsule.
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In which of the following steps of transcription is the C-terminal domain of RNA polymerase II first phosphorylated?
A. assembly of the preinitiation complex B. initiation C. elongation D. termination complex formation E. after termination
What is the correct order of the Linnaean system of classification, starting with the most general category?
A. genus, order, class, phylum B. kingdom, class, phylum, species C. domain, kingdom, phylum, class D. domain, phylum, class, kingdom
How is the 4-letter language of nucleic acids converted into the 20-word language of amino acids?
a. The 4 nucleic acid bases combine in 2-letter combinations that define different amino acids. b. The 4 nucleic acid bases combine in 3-letter sequences that define different amino acids. c. Triplets of the 2-letter nucleic acid bases are translated into the 20 different amino acids. d. The 4 bases each specify 1 amino acid, which give rise to the remaining 16 amino acids. e. The 4 bases are first converted into tRNA molecules, which can each attach to 5 amino acids.
Name that STD! Choose from the following STDs. You may use each choice more than once. In some cases, there may be several correct answers
gonorrhea, chlamydia, human papillomavirus (HPV) infection, genital herpes, syphilis • Which STD usually causes death if it is left untreated? • This STD goes through three stages before causing death. • Which STD is suspected after an abnormal PAP test in females? • Name two STDs that can be contracted on mucus membranes other than those of the reproductive systems. • If an STD is detected early, many can be easily treated. Which STD cannot be treated (meaning that the person can never get rid of it, even though it may be managed)? • Name three STDs that may have no symptoms (in either men or women). • John has symptoms of an STD (burning sensation while urinating and a yellowish discharge from the urethra) that popped up 3 days after sexual contact with a questionable partner. Based on his symptoms and this timing, John probably has which STD? • This STD can cause genital warts. • Which STD can cause a rash over the entire body? • Several STDs can be transmitted by oral sex. Name one. • For which STD is there now a vaccine available for females?