What is the most efficient way to extract oxygen from the environment?

a. Countercurrent

b. Crosscurrent

c. Uniform pool

A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei containing how many chromosomes?

One factor that can increase sensitivity to sunlight is genetics. a. True b. False

An atom will be neutral if a. electrons equal energy levels. b. protons equal neutrons. c. protons equal electrons.

Which of the following statements is true about the function of DNA in the body?

One important effect of the lowering of sea levels during Earth's geologic history has been A) the breakup of the continents. B) the loss of fresh water sources. C) the disappearance of inland seas. D) the formation of new coral reefs.

What is the next step of the scientific method

Which statement describes the difference between photosynthesis in chloroplasts and cellular respiration in the mitochondria? A. Photosynthesis requires reactants and products, but cellular respiration does not. B.

A general medical problem that can affect normal brain function is:

Investigation: how does temperature affect respiration rates of fish? answers

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