Viruses, viroids, and prions are obligate intracellular agents
Indicate whether this statement is true or false.
TRUE
You might also like to view...
When you are classifying a species based on evolutionary relationships, a phylotenetic tree is then being used as a ____.
A. node. B. speciation plan. C. morphological cut off point. D. molecular diagram. E. cladogram.
Which of the following is NOT a characteristic of shade leaves on a plant?
A. more chlorophyll production B. less mesophyll tissue C. more air spaces D. lacking an epidermal layer
Nitrogen fixation is a process that
a) releases nitrate from the rock substrate. b) converts ammonia to nitrate. c) converts nitrogen gas into ammonia. d) recycles nitrogen compounds from dead and decaying materials. e) recycles nitrogen compounds from dead and decaying materials and converts nitrogen gas into ammonia.
The directions for each amino acid in a polypeptide are indicated by a codon that consists of ________ nucleotides in an RNA molecule
A) five B) four C) three D) two