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VIBS 422 EXAM 2 UPDATED ACTUAL Exam Questions and CORRECT Answers

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VIBS 422 EXAM 2 UPDATED ACTUAL Exam Questions and CORRECT Answers Relevant early menopause chemicals: - CORRECT ANSWER- Pesticides PCB Phthalates (DEHP) As population and plastics production has increased, sperm count has __________. - CORRECT ANSWER- Decreased

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  • October 18, 2024
  • 30
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • VIBS 422
  • VIBS 422
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MGRADES
VIBS 422 EXAM 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Relevant early menopause chemicals: - CORRECT ANSWER✔✔- Pesticides


PCB


Phthalates (DEHP)


As population and plastics production has increased, sperm count has __________. -
CORRECT ANSWER✔✔- Decreased



System of ducts in MRS - CORRECT ANSWER✔✔- Epididymis


Vas Deferens


Ejaculatory Ducts


Urethra


Accessory sex glands - CORRECT ANSWER✔✔- Seminal vescicles


Prostate


Bulbouretheral glands


Ovary 2 relevant functions: - CORRECT ANSWER✔✔- Produce eggs (ova)


Synthesize steroid hormones (estrogen and progesterone)

,All female species have a ____ number of oocytes - CORRECT ANSWER✔✔- Set



Major problem with reproductive system is _________. - CORRECT ANSWER✔✔-
Infertility


Primary infertility - CORRECT ANSWER✔✔- Never achieved pregnancy=


Never conceived(F)/ never impregnated(M)


Secondary infertility - CORRECT ANSWER✔✔- Inability to conceive after a previous
pregnancy


Never conceived AGAIN(F)/ never impregnated AGAIN (M)


PCB Uses - CORRECT ANSWER✔✔- Fluids, liquids, waxes


PLASTICIZER


PBB Uses - CORRECT ANSWER✔✔- Think electronics, solids


PLASTICIZER


Cl affect on PCB toxicity - CORRECT ANSWER✔✔- More = more toxic


Position affects toxicity


_____ million kgs of PCBs in environment. - CORRECT ANSWER✔✔- 4.5



______________ are highly fat soluble - CORRECT ANSWER✔✔- PCBs and PBBs

, ____________tons of PCBs and PBBs present in env. - CORRECT ANSWER✔✔- 370k



Environmental fate of PCBs and PBBs - CORRECT ANSWER✔✔- Leaks, spills, improper
disposal


highly VOLATILE


_____________ is far more effective n removing large concentrations of PCBs - CORRECT
ANSWER✔✔- Dredging



PCB sediment eaters - CORRECT ANSWER✔✔- Mysis recta and benthic invertebrates



Bioaccumulation and biomagnification of PCBs and PBBs - CORRECT ANSWER✔✔-
Increases as trophic level increases


PCBs high in what animal? - CORRECT ANSWER✔✔- Orcas


In 1940s and 1950s milk and meat were contaminated by PCBs and PBBs due to: -
CORRECT ANSWER✔✔- Contaminated silage of silos



Montana hog slaughter damage incident - CORRECT ANSWER✔✔- PCB leakage in 19 US
states, Canada, Japan


Hudson River contaminated highly by - CORRECT ANSWER✔✔- PCBs


Due to 20yrs of discharge


Rice bran oil in Japan and Taiwan contaminated with: - CORRECT ANSWER✔✔- PCBs



Catfish in _______ contaminted by PCBs - CORRECT ANSWER✔✔- Galveston

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