What is the main role of the pigment molecules within the antenna or light-harvesting complex?
A. Absorb photons and transfer light energy to the reaction center chlorophyll.
B. Oxidize water and release oxygen to the reaction center chlorophyll.
C. Synthesize NADPH.
D. Increase H+ concentration in the stroma.
E. Pass electrons to the electron transport chain and then to NADPH.
A. Absorb photons and transfer light energy to the reaction center chlorophyll.
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Which of the following depicts the correct sequence of protein activity in clot formation?
a. thrombin ? prothrombin ? fibrinogen ? fibrin b. prothrombin ? thrombin ? fibrinogen ? fibrin c. prothrombin ? thrombin ? fibrin ? fibrinogen d. prothrombin ? thrombin ? fibrin e. prothrombin ? thrombin ? fibrinogen ? erythrocytes
A short period early in a disease that may manifest with general malaise and achiness is the _______
a. Period of incubation b. Prodrome c. Sequelae d. Period of invasion
Selective toxicity
A) harms the microbes without significantly harming the host. B) causes host damage without causing significant damage to the microbe. C) is the maximum tolerable dose of a drug per kilogram of body weight. D) is the same as the spectrum of activity for any given drug.
Behavior can be defined as the way an animal responds to a(n) ________ in its environment.
Fill in the blank(s) with the appropriate word(s).