BIOL 1001 Midterm: Test 2 Review (got 93% on the test)

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copperelk920

18 Jun 2014

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Office hours: 39 allen: nucleus, golgi apparatus, mitochondria. Office hours: 39 allen: chloroplast, plastid, nucleus. Glucose (b) facilitated diffusion through channel proteins (c) osmosis through aquaporins or the phospholipid bilayer (d) facilitated diffusion through carrier proteins (a) simple diffusion through the phospholipid bilayer. It took as swim in the dead sea. It took a swim in a pool of glucose. B: its plasma membrane got clogged with dirt. Office hours: 39 allen: its proteins loss their functions, cystic fibrosis is a genetic disease that results in thick mucus secretions that clog up air passages in the lungs. It causes the channel proteins in the membranes of cells in the lungs to be faulty, and prevents the movement of cl- and na+ out of the cells. Side a is filled with a solution of water with 2% glucose, while side b is filled with water and 4% glucose.

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Nearly crying, she heads back to the dorm and checked her temperature - 101 F. Desperate, she wants to the student health center, where a nurse practitioner notices white spots on the back of Nadia's throat and on her tonsils. The divisional basketball game starts in 6 hours, but it only takes a few minutes for the nurse practitioner to perform a rapid streptococcal antigen test and determine that Nadia has streptococcal pharyngitis - strep throat. She will miss the big game.

Strep throat is caused by an encapsulated, gram-positive bacterium, Streptococcus pyogenes. The only good news is that by taking the prescribed penicillin, Nadia should be ready for her next big game - hopefully the quarterfinals.

How does the capsule of Streptococcus contribute to the bacterium's ability to cause disease?

What bacterial structures, besides the capsule, may be allowing Streptococcus to infect Nadia's throat?

Penicillin works by interrupting the formation of peptidoglycan. What bacterial structure contains peptidoglycan?

In a gram-positive organism, such as Streptococcus, is this structure typically thicker or thinner than it would be in a gram-negative bacterium?

College sophomore Nadia is a star point guard for her school's basketball team. She is excited about the divisional finals Friday night - she's even heard rumors that a professional scout will be in the stands. On Thursday morning, she wakes up with a sore throat. Her forehead doesn't feel warm, so she forces herself to attend her Thursday classes; but when she wakes up on Friday morning, her throat is noticeably worse. Still, she forces herself to attend Friday morning class but feels tired and much worse by noon. It is downright painful to swallow and she skips lunch. Nearly crying, she heads back to the dorm and checked her temperature - 101 F. Desperate, she wants to the student health center, where a nurse practitioner notices white spots on the back of Nadia's throat and on her tonsils. The divisional basketball game starts in 6 hours, but it only takes a few minutes for the nurse practitioner to perform a rapid streptococcal antigen test and determine that Nadia has streptococcal pharyngitis - strep throat. She will miss the big game. Strep throat is caused by an encapsulated, gram-positive bacterium, Streptococcus pyogenes. The only good news is that by taking the prescribed penicillin, Nadia should be ready for her next big game - hopefully the quarterfinals.

1.How does the capsule of Streptococcus contribute to the bacterium's ability to cause disease?

2.What bacterial structures, besides the capsule, may be allowing Streptococcus to infect Nadia's throat?

3.Penicillin works by interrupting the formation of peptidoglycan. What bacterial structure contains peptidoglycan?

4.In a gram-positive organism, such as Streptococcus, is this structure typically thicker or thinner than it would be in a gram-negative bacterium?

Several years ago, a woman died in a radio contest called âHold your Wee for a Wiiâ where she tried to drink more water than any other contestant in order to win a video game console. She consumed massive amounts of water, developed severe headaches, seizures, coma and died within 24 hours. The coronerâs office determined her cause of death was water intoxication. What happened?

a) her blood was hypertonic and her brain cells became swollen

b)her blood was hypertonic and her brain cells shrank

c) her blood was hypotonic and her brain cells became swollen

d) her blood was hypotonic and her brain cells shrank

BIOL 1001 Midterm: Test 2 Review (got 93% on the test)

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