At what stage of a lytic infection are phage components put together to make new viruses?
a. replication and synthesis
b. penetration
c. attachment
d. assembly
e. release
d
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After a meal, ectotherms often situate themselves in a warm and or sunny spot. This can be critical to the health of the animal. Why is this process important?
A. The digestive process is enzyme catalyzed and regulated within the body. This behavior has nothing to do with digestion. B. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can increase the rate of enzyme-driven reactions 2-3 times the original rate. C. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can increase the rate of enzyme-driven reactions 10 times the original rate. D. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can decrease the rate of enzyme-driven reactions, which provides more time for greater nutrient absorption.
In the Proterozoic eon, accumulated in the atmosphere that supported the first eukaryotes and multicellular organisms.
A. oxygen B. sulfur C. nitrogen D. hydrogen E. carbon dioxide
Activities that disrupt the production of melatonin at night also may cause ____
a. heart disease b. cancer c. increasing gonadal output d. pancreas reduction e. too much sleep
Aortic and carotid bodies are
Select one: a. the same as the SA and AV nodes. b. types of valves in the heart. c. present in the lungs. d. sensitive to changes in CO2 and H+ in the blood. e. sensitive to oxygen changes.