Inside an active mitochondrion, most electrons follow which pathway?
A) glycolysis ? NADH ? oxidative phosphorylation ? ATP ? oxygen
B) citric acid cycle ? FADH2 ? electron transport chain ? ATP
C) electron transport chain ? citric acid cycle ? ATP ? oxygen
D) pyruvate ? citric acid cycle ? ATP ? NADH ? oxygen
E) citric acid cycle ? NADH ? electron transport chain ? oxygen
Answer: E
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In 2002, habitat patches that were connected by corridors had ____
a. six more species than isolated habitat patches had b. a total of six species c. six less species than isolated habitat patches had d. six more species than that patch had sustained the year before e. six less species than that patch had sustained the year before
During an infection, white blood cells travel to the infected site and phagocytize the pathogens. After phagocytosis,
primary lysosomes fuse with the phagocytic vesicle to form a larger vesicle called a secondary lysosome. The purpose for this process is to: a. Both B and D. b. degrade the bacteria and export it from the cell. c. wrap the pathogen in additional membrane, rendering them harmless. d. mix the pathogens with strong hydrolytic enzymes and destroy them. e. coat the bacteria in lipids derived from the Golgi complex, which cover and smother them.
What do the letters D-N-A stand for?
A) Dioxyribonucleic acid B) Dioxyribonuclear acid C) Deoxyribonucleic acid D) Deoxyrobonuclear acid
Which of the following statements regarding meiosis is most accurate?
A) Crossing over occurs during metaphase I. B) A diploid cell produces haploid daughter cells. C) Haploid cells produce diploid cells. D) Homologous (non-sister) chromatids separate during anaphase II. E) Meiosis has the same number of stages as mitosis.