What is the major gas released into the environment when organic material is burned?
a. O2
b. CO2
c. N2
d. H2
e. Cl2
b
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The molecule in the accompanying figure is glyceraldehyde, an example of a ____ sugar
a. triose b. hexose c. pentose d. heptose e. tetrose
Which of the following is NOT true regarding
coenzymes?
a. NAD+ is an example of a coenzyme. b. Coenzymes may carry electrons. c. Coenzymes may be bound to an enzyme. d. Coenzymes may act as a separate molecule. e. Coenzymes are metal ions
Which factor is the most important algal contribution
to the fungal component of a lichen? a. improved water conservation b. mechanical protection c. photosynthetically derived food d. conversion of nitrogen gas to nitrates e. pigment for camouflage
T lymphocytes that have both CD4 and CD25 are (cytotoxic/helper/regulatory) T cells
What will be an ideal response?