The space between the two membranes of the
mitochondrion stockpiles
a. proteins.
b. H+.
c. carbohydrates.
d. H2O2.
e. CO2.
Answer: b
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Which of the following statements regarding biogeochemical cycles is incorrect?
A. Cycles are simple systems between living and nonliving components. B. Recycling keeps nutrients in balance. C. All organisms directly participate in recycling. D. Elements cycle through biotic and abiotic environments. E. All elements originate from a nonliving, long-term reservoir.
The most accurate description of an organism
with genotype AaBb is a. homozygous dominant. b. heterozygous. c. heterozygous dominant. d. homozygous recessive. e. heterozygous recessive
Bacteria that are able to grow in humans and cause disease have likely evolved to be
A) psychrophiles. B) mesophiles. C) thermophiles. D) hyperthermophiles.
The descending portion of the loop of Henle is
A. permeable to water and impermeable to sodium. B. permeable to water and permeable to sodium. C. impermeable to water and permeable to sodium. D. impermeable to water and impermeable to sodium. E. the site of active transport of water.