In streams and rivers, most of the microbial biomass is ________.
A. metabolically inactive
B. floating on the surface
C. buried in bottom sediments
D. attached to surfaces
Answer: D
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During protein synthesis in eukaryotes, what happens during RNA splicing?
A. The product of translation, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. B. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature tRNA. C. The product of transcription, called the secondary transcript, is cut and some pieces are joined back together to form the mature mRNA. D. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. E. The product of transcription, called the primary transcript, is cut and all pieces are joined back together to form the mature mRNA.
What structure is located at the junction of the small
and large intestines? a. cecum b. rectum c. anus d. sphincter e. pharynx
Stress, relaxation, hunger, consuming the wrong foods, and too much or too little sleep can contribute to which of the following?
A) stroke B) headache C) spinal cord injury D) coma
Among the common features shared by prokaryotes and eukaryotes are
a. the same types of movement b. the same shapes and sizes c. ribosomes of the same weight d. common organic molecules such as proteins and carbohydrates