When a young, vigorously growing culture of bacteria is transferred to fresh medium of the same composition, the lag phase is usually short or absent.
Answer the following statement true (T) or false (F)
True
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The membranous sac enclosing the glomerulus of a mammalian kidney is called:
A. Bowman's capsule. B. the nephron. C. the renal pyramid. D. the medulla. E. the renal pelvis.
The vertebrate digestive system consists of
A. a two-way tube with a separate mouth and anus. B. a two-way tube with a separate mouth and anus and accessory organs. C. a one-way tube with a separate mouth and anus and accessory organs. D. a tube with a single opening that serves as mouth and anus. E. a one-way tube with a separate mouth and anus and no accessory organs.
In which of the following biological systems
have radioactive tracers been used?
a. cells b. bodies c. ecosystems d. all of these e. all of these except ecosystems
When a photon is absorbed by a pigment (light-absorbing molecule), such as chlorophyll, the energy of the photon is transferred to
A) D1 protein to activate PSII. B) ATP synthase to make ATP. C) an electron to move it from a low to a high energy orbital. D) Plastocyanin to be passed on to PSI. E) NADP+ to make NADPH.