Which of these is a secretion of the endocrine portion of the pancreas?
A. trypsinogen
B. enterokinase
C. amylase
D. bicarbonate
E. insulin
E
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Epinephrine and norepinephrine increase ion flow through ________ channels.
A) K+ only B) If only C) If and Ca2+ D) Ca2+ only E) Na+only
Aldosterone:
a. is released by the pituitary gland b. increases the urine volume c. increases sodium reabsorption d. all of the above
The term "central dogma of molecular biology" was coined by a co-discoverer of the structure of DNA, Francis Crick. The term is used to define how information flows in biological systems. Which of the following statements about DNA, mRNA and proteins provide a simple definition of the "central dogma?"
A)mRNA can be copied into DNA to make protein. B)Proteins can provide the instructions for making other proteins. C)mRNA is a key in creating DNA. D)DNA allows the production of mRNA. mRNA allows for the production of protein.
A molecule is made up of a combination of two or more atoms.
Answer the following statement true (T) or false (F)