Select the following phylum that includes coelomate, bilaterian animals that have a structure called a notochord.
A. Echinodermata
B. Annelida
C. Arthropoda
D. Mollusca
E. Chordata
E. Chordata
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Which of the following would occur from a mutation in the gene's promoter region?
A. The sequence of the mature mRNA would change. B. The ability of pre-mRNA to be properly spliced would change. C. The ability of mRNA to be translationally regulated would change. D. The amino acid sequence of the translated protein would be altered. E. The rate of transcription may increase or decrease.
All the populations of different organisms that live in the same place form a(n) ____
a. ecosystem b. community c. biosphere d. sample e. organ
Matching. Choose the one most appropriate answer
for each. 1. ___ alveoli 2. ___ bronchi 3. ___ diaphragm 4. ___ epiglottis 5. ___ rib muscles 6. ___ larynx 7. ___ medulla oblongata 8. ___ oxyhemoglobin 9. ___ pharynx 10. ___ pleural sac 11. ___ trachea 12. ___ ventilation A. flexible windpipe reinforced with cartilage B. surrounds each lung C. oxygen-rich form of a respiratory protein D. contains two true vocal cords E. alter chest cavity volume F. part of the brainstem; controls breathing G. throat passage behind the mouth H. inhalation and exhalation I. connect trachea to lungs J. flaplike structure that points upward allowing air to enter trachea, but blocks the larynx during swallowing K. contraction increases thoracic volume L. microscopically small pockets lined with moist epithelium
When wheat is processed to make white, all-purpose flour, the wheat is passed through rollers that pop off the embryo and the ovary wall
Some people add "wheat germ" to the white flour used to make baked goods in order to increase the protein content of these products. What is wheat germ? A) Wheat flour B) Wheat fruit C) Embryo D) Bran E) Endosperm