Increasing ________ will decrease the amount of mRNA transcript within a cell for a constitutively active gene.
A) ribonuclease activity only
B) ribonuclease activity, RNA polymerase activity and siRNA concentration
C) siRNA concentration only
D) ribonuclease activity and siRNA concentration only
E) RNA polymerase activity only
D) ribonuclease activity and siRNA concentration only
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Which connective tissue cells produce antibodies?
A. Plasma cells B. Mast cells C. Fibroblasts D. Fixed macrophages E. Mesenchymal cells
Which property of diffusion best helps explain the necessity of the circulatory system in multicellular organisms?
A) Diffusion rate is inversely related to molecule size. B) Diffusion is rapid over short distances but much slower over long distances. C) Molecules move from an area of higher concentration to an area of lower concentration. D) Diffusion can take place in an open system or across a partition that separates two systems.
Murphy, a male Golden Retriever, required a/an ________________________ (incision into the abdomen) to see if he had an intestinal obstruction
Fill in the blank(s) with correct word
The adult heart is roughly the size of
A) the liver. B) a man's clenched fist. C) the gallbladder. D) the hand of a 10-year-old. E) the brain.