Which of the following is not an amoeba?
A. Entamoeba histolytica
B. Cryptosporidium species
C. Acanthamoeba species
D. Naegleria fowleri
Answer: B
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J. A. Milburn and R. P. C. Johnson developed an acoustic method for detecting cavitation in plants. This involves "listening" for characteristic clicks produced during air-bubble formation, using sensitive microphones and amplifiers
In one experiment with the castor bean plant (Ricinus communis), they detached leaves by cutting the petioles and subjected them to various treatments. Which of the following would be LEAST likely to be observed in such an experiment? A) as the leaf is allowed to wilt, recording many clicks that approximately equal the estimated number of vessel elements in the cut petiole B) after increasing transpiration by blowing warm air across the leaf, recording an increased rate of clicking C) after adding water to the cut end of the petiole, recording an increased rate of clicking
What structure does blood flow into during sexual excitation of a male?
a. testes b. epididymus c. vas deferens d. prostate gland e. penis
Which of the following is true of bark?
a) It is composed of phloem plus periderm. b) It is formed by the apical meristems. c) It has no identifiable function in trees. d) It is associated with annuals but not perennials. e) It forms annual rings in deciduous trees.
Industrial fermentation and fermentation in food production
A) are both processes in which sugars are oxidized to alcohols or acids. B) are processes in which sugar or protein is oxidized to produce alcohols or acids. C) use entirely different microorganisms. D) use entirely different starting material. E) make use of the same microorganisms.