Because all organisms synthesize protein, the DNA nucleotide sequences coding for _____ have been highly

conserved during evolution.
a. tRNA
b. rRNA
c. mRNA
d. snRNA
e. SRP RNA


b

Biology & Microbiology

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Which of the following statements about plant toxins against herbivores is false?  

A.  The toxin may be kept in a membrane-bound structure to keep it from harming the plant. B.  The toxin may not be toxic unless it is metabolized in the intestine of a herbivore. C.  The toxin may have also have a bad taste. D.  Even a little bit of the toxin will be deadly. E.  Some toxins can over stimulate particular physiological processes.

Biology & Microbiology

The conversion of PGAL to pyruvate is

accompanied by a. anaerobic respiration. b. photophosphorylation. c. the electron transfer chain. d. substrate-level phosphorylation. e. the Krebs cycle.

Biology & Microbiology

A mountain lion, or puma, has the scientific name Felis concolor. The term Felis is the

A) species. B) genus. C) kingdom. D) order. E) family.

Biology & Microbiology

Which of the following occurred in the Precambrian period

What will be an ideal response?

Biology & Microbiology