Consider the Calvin–Benson cycle and the noncyclic photosynthetic pathway. Why is the cyclic pathway so important?
What will be an ideal response?
The Calvin–Benson cycle uses 18 ATP and 12 NADPH to produce one molecule of glucose. However, the noncyclic photosynthetic pathway produces ATP and NADPH at a one-to-one ratio. As a result there would be insufficient ATP. However, the cyclic pathway produces only ATP, thus allowing light-dependent reactions to continue when the noncyclic pathway stops.
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Giovanni is resting peacefully after a long day of hard work. Assuming he is otherwise healthy, what would be the volume of his ventilations?
A) 500 ml B) 1900 to 3300 ml C) 4500 to 6000 ml D) 1100 to 1200 ml
Which molecule has the shape of a completed tetrahedron?
a. Methane CH4 b. Water H2O c. Oxygen Gas O2 d. Hydrogen Gas H2
If electrons in water molecules were equally attracted to the hydrogen and oxygen atoms, how would this affect the polar covalent bonds between the hydrogen and oxygen atoms?
A. The bond would break. B. The bond would become more polar. C. The bond would become a hydrogen bond. D. The bond would become covalent. E. The bond would become less polar. F. The bond would become ionic.
What structural feature of a leaf enables it to obtain CO2 from the air?
A) Chloroplast B) Stomata C) Epidermis D) Cuticle E) Mesophyll