Which of the following types of organisms uses hydrogen sulfide for reducing power?
a. Cyanobacteria
b. Algae
c. Purple sulfur bacteria
d. Green nonsulfur bacteria
e. Purple nonsulfur bacteria
Answer: c. Purple sulfur bacteria
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What is the sticky female region of a flower that is specialized for receiving pollen?
a. stamen b. stigma c. anther d. ovary e. endosperm
Which of the following are eusocial (true social) insects? (Check all that apply.)
_____ ants _____ fruit flies _____ honeybees _____ termites _____ wasps
The application of ____ substitutes for low temperature or light requirements for biennial germination
a. indoleacetic acid b. indolebutyric acid c. naphthaleneacetic acid d. gibberellins e. ethephon
Which of the following is responsible for maintaining the membrane potential?
a. the Na+/K+ pump b. the diffusion gradient c. the Ca2+ pump d. the H+ pump