The stain shown in Image B utilizes which of the following types of microscopy?
a) Polarizing
b) Transmission electron
c) Darkfield
d) Fluorescence
Answer: d) Fluorescence
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In all organisms, active transport across a membrane requires
A) equal concentrations of ions on both sides of the membrane. B) a resting potential of 0 mV. C) exergonic movement indicated by the direction of the electrochemical potential. D) an asymmetric distribution of ions across a membrane. E) both choices B and D
Endochondral ossification
What will be an ideal response?
The vitamins that assist enzymes in their operation are generally referred to as
A. minerals. B. coenzymes. C. electrolytes. D. holoenzymes.
Red algae ____.
A. are primarily marine organisms B. are thought to have developed from green algae C. contain xanthophylls as their main accessory pigments D. are mostly unicellular E. survive only in shallow water