What serves as the template during transcription?
a. mRNA
b. RNA
c. DNA
d. amino acids
e. protein
c
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Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal?
A) Sodium and glucose compete for the same binding site in the cotransporter. B) Glucose entering the cell down its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can move down their electrochemical gradient through the cotransporter whether or not glucose is present outside the cell. D) The cotransporter can also transport potassium ions. E) A substance that blocks sodium ions from binding to the cotransport protein will also block the transport of glucose.
Cyanobacteria capable of fixing atmospheric N2 always produce heterocysts.
Answer the following statement true (T) or false (F)
Which types of plants contain vascular tissues?
A. Both gymnosperms and flowering plants contain vascular tissues. B. All plants except bryophytes contain vascular tissues. C. All plants contain vascular tissues. D. Only flowering plants contain vascular tissues.
element
What will be an ideal response?