All of the following teeth are found in adult vertebrates except
A. molars.
B. incisors.
C. premolars.
D. precanines.
E. canines.
Answer: D
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What structure is responsible for the exchange of gas in leaves?
a. Aerenchyme b. Propagule c. Lenticels d. Stomata
All of the following statements are true concerning
phloem tissue EXCEPT that a. it transports plant-manufactured products. b. it stores organic compounds. c. it is composed of living cells. d. only some of its cells have nuclei. e. it does not transport minerals.
Which of the following is an anaerobic pathway?
a. chemiosmosis b. fermentation c. citric acid cycle d. aerobic respiration e. electron transport chain
The Pax6 gene codes for a transcription factor that initiates differentiation of cells that ultimately form the eye. Suppose that a researcher added an activator for the Pax6 gene to embryonic cells that are in the process of forming legs in Drosophila
What do you think the researcher will observe? A) Legs and eyes will develop normally. B) Legs will develop where the eyes normally develop. C) Eyes will develop where the legs normally develop.