Consider that you have access to use fluorescent tagging of specific proteins and view cells in a confocal microscope. You isolate a cell with the fluorescent dyes, showing that a very tiny, single-celled organism has not only a cell membrane, but internally folded membranes. You determine also that the membranes do not completely surround internal specialized compartments of the cell. You identify this as
A. a prokaryote.
B. a yeast.
C. a eukaryote.
D. a plant.
E. an animal.
A. a prokaryote.
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Griffith first proposed the "transformation principal" through his studies on Streptococcus pneumoniae bacterium. Which of the following molecules was later found to be responsible for this phenomenon?
A. protein. B. RNA. C. DNA. D. phage. E. bacteriophage.
The production of alcohol or lactate from pyruvate during __________ occurs as a means of
regenerating __________ from __________. a. aerobic respiration; NAD+; NADH b. fermentation; NAD+; NADH c. fermentation; NADH; NAD+ d. fermentation; ADP; ATP e. aerobic respiration; ATP; ADP
Which three types of proprioceptors are stimulated when you ride a bicycle?
a. muscle spindles, mechanoreceptors, and thermoreceptors b. mechanoreceptors, interoceptors, and lateral line organs c. muscle spindles, Golgi tendon organs, and joint receptors d. lateral line organs, Golgi tendon organs, and mechanoreceptors e. interoceptors, joint receptors, and lateral line organs
In animals, lactate forms from fermentation. Lactate ________.
Fill in the blank(s) with the appropriate word(s).