Researchers found an increase of abnormal meiosis in mouse oocytes when the mouse facility started washing the animals’ plastic cages and water bottles in a new, alkaline detergent. The detergent had damaged the plastic, which began to leach bisphenol A (BPA). Looking at the data in this experiment, which hypothesis do the data best support?
1.glass bottles were affected by the alkaline detergent
2.damaged cages had the greatest abnormal meiosis
3.damaged bottles had the greatest abnormal meiosis (26.9%)
4.the effect of damaged cages and damaged bottles was cumulative
4
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AMP is the primary energy and phosphate source in coupled reactions
Indicate whether the statement is true or false.
The underlying problem in Gaucher disease is ____
a. the spontaneous breakdown of red blood cells b. the accumulation of fat in white blood cells c. the breakdown of the myelin sheath around nerves d. a hypertrophied spleen e. the lack of critical liver enzymes
Gangrene is often caused by anaerobic bacteria deep in tissues that lack adequate blood flow and adequate oxygen supply. Many times, gangrene can be treated by putting the patient into a hyperbaric chamber. Which statement best describes why this type of therapy is effective?
A) The increased pressure drives nitrogen into the system and nitrogen gas poisons the bacteria. B) The increased pressure drives more oxygen into the bloodstream and, therefore, anaerobic bacteria cannot survive in the presence of oxygen. C) The increased pressure creates a higher pressure in the capillaries of the tissue and drives the toxin produced by the bacteria into the bloodstream, where it is diluted. D) The increased pressure destroys the cell wall of the bacteria. E) When the patient is brought back to normal atmospheric pressure, carbon dioxide comes out of solution at high concentrations, which poisons the bacteria.
_______ can track and find prey with sound, much like a submarine would use sonar
A) Giant squid B) Zooplankton C) Toothed whales D) Tuna