Because carbon and hydrogen share similar electronegativities, they will form nonpolar covalent bonds with each other.
Answer the following statement true (T) or false (F)
True
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A deficiency of vitamin C can result in
a. anemia. b. beriberi. c. night blindness. d. rickets. e. scurvy.
How are viruses classified by the ICTV?
a. By their DNA sequence b. By their number of rRNA c. By their structural components d. By their host range and other characteristics e. By the Linnaean binomial nomenclature system
As electrons travel from the primary electron acceptor in photosystem II down the electron transport chain to photosystem I, they drive the movement of protons from the stroma into the thylakoid compartment. Why is the development of this chemical gradient useful to photosynthesis?
A. Protons are directly used in the thylakoid to make glucose B. The proton gradient can drive the production of ATP, which is needed for the light-independent reactions C. Protons provide the energy needed to drive the light-dependent reactions D. This proton gradient is used to make NADPH, which is needed for the Calvin cycle
Which structure regulates the passage of food from the stomach into the small intestine?
A) the pharynx B) the epiglottis C) the pyloric sphincter D) the stomach submucosa