Which event occurs last in the noncyclic pathway of
ATP formation?
a. excitation of p700
b. transfer of energy to p700
c. formation of NADPH
d. ATP synthesis
e. transfer of electrons to p680
Answer: c
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Fruit flies, mollusks, and humans all have insulin-like hormones and receptors, even though molecular studies suggest
that their last common ancestor existed more than 800 million years ago.
Indicate whether the statement is true or false.Which of the following statements regarding hypersensitivity are true? (Check all that apply.)
_____ The acceptance of self cells is known as immunological tolerance. _____ Allergies are caused by IgG secretion in response to antigens. _____ Autoreactive B cells produce autoantibodies causing inflammation. _____ Itchy welts or hives could be called a local anaphylaxis. _____ Delayed hypersensitivity is mediated by TH cells and macrophages.
Which of the following is not a shape seen in prokaryotes?
A. Spheres B. Icosahedrons C. Rods D. Spirals
The cellular process which uses oxygen and sugar to produce energy is called
a. photosynthesis b. cell division c. cellular respiration d. DNA replication