Preliminary digestion of carbohydrates begins in the _____.
A. mouth
B. esophagus
C. stomach
D. duodenum
E. jejunum
Answer: A
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Based on your knowledge of the polarity of water molecules, the solute molecule depicted here is most likely _____
A) positively charged B) negatively charged C) without charge D) hydrophobic E) nonpolar
The stage of the cell cycle during which the cytoplasm divides to form two cells is called:
A. G1 B. S C. G2 D. Mitosis E. Cytokinesis
The structure that confers structural strength on the cell is known as the
A) cytoplasmic membrane. B) cell wall. C) ribosome. D) cytoplasm.
If scientists want to develop plants better adapted to certain climates they need information about the plant's ability to:
A. bind membrane proteins B. transport solutes passively C. make dehydrins D. take up minerals E. transport calcium