What differentiates various atoms?
What will be an ideal response?
Different atoms have differing numbers of subatomic particles. An oxygen atom, for example has 8 electrons and 8 protons, while a sodium atom has 11 electrons and 11 protons.
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A 37-year-old man traveling through South America has a sudden onset of fever, severe headache, and chills. A macropapular rash develops on his trunk, which then spreads to his face and extremities. The vector transmitting this disease is most likely:
a. ticks. b. mosquitos. c. lice. d. sandflies.
The charge on amino acids in the active site of an enzyme would be affected by ___.
A. temperature B. substrate concentration C. pH D. antibiotics
Compact bone contains ____
a. thick concentric layers of extracellular matrix b. spongy marrow c. yellow marrow d. red marrow e. blood arteries
What is the first step in CAM photosynthesis?
A) Plants open their stomata at night to take in carbon dioxide. B) Plants open their stomata at any time to take in carbon dioxide. C) Plants close their stomata to raise internal temperatures. D) Plants open their stomata to raise internal temperatures. E) Plants temporarily bind carbon dioxide to a holding molecule.