List three hypotheses that explain why selection would favor large brains in early humans. ____
Fill in the blank with the appropriate word.
tool use; social living; language
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The purpose of the Calvin cycle is to
a. produce sugars using CO2 as a carbon source. b. recover electrons lost when water was split. c. capture photons of light. d. counteract increasing atmospheric CO2 concentrations (global warming). e. generate O2 gas for cellular respiration.
The soil type that has the best oxygen concentration and water penetration is called ________
a. topsoil b. leaching c. loam d. rock e. humus
The genetic material of some viruses, such as HIV, is not DNA but is instead
A) carbohydrate. B) lipid. C) RNA. D) protein.
DNA phenotyping poses several concerns as an emerging technology. Which of the following is not a concern with DNA phenotyping?
A) racial profiling B) its ability to help identify missing persons C) privacy violations D) intellectual property of the company's methodologies