Which one of the following is NOT usually a symptom of cystic fibrosis?
A. Low fertility or infertility
B. Frequent respiratory infections
C. Difficulty breathing
D. Loss of pancreatic function
E. Problems with hearing and vision
E
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Which tissue distributes water and dissolved mineral ions through vascular plant bodies?
a. plasmodesmata b. phloem c. xylem d. rhizomes e. meristem
Lampreys and salmon share a common behavior of being catadromous, meaning they migrate to freshwater to spawn
Indicate whether the statement is true or false
In ________, ribosomes can attach to the mRNA and begin translation even though transcription has not been completed.
A. fungi B. eukaryotes C. protozoa and some plants D. bacteria
How does water enter and exit a cell?
a. By use of an integral transport protein b. By simple diffusion or by use of an integral transport protein c. By simple diffusion across the membrane d. By use of a peripheral transport protein