Activities that occur in the cytoplasm include all of the following EXCEPT ____
a. conduction of stimulatory signals
b. photosynthesis
c. synthesis of DNA
d. protein synthesis
e. various metabolic reactions
C
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A strong acid like HCl _____
A) dissociates completely in an aqueous solution B) increases the pH when added to an aqueous solution C) reacts with strong bases to create a buffered solution D) is a strong buffer at low pH E) dissociates completely in aqueous solutions and is a strong buffer at low pH
The definition of simple primary tissues is that they are composed of which of the following?
A. one or two simple cell types B. several cell types C. many cell types D. All of the choices are correct. E. None of these choices is correct
In the Hershey-Chase experiments, the radioactive tracers 32P and 35S were used to track DNA and protein,
respectively, because _____.
a. bacterial DNA contains sulfur and viral DNA contains phosphorus b. viral DNA contains sulfur and bacterial DNA contains phosphorus c. only DNA contains phosphorus and only protein contains sulfur d. DNA has more sulfur than protein, and protein has more phosphorus than DNA
e. protein has more sulfur than DNA, and DNA has more phosphorus than proteinWhich taxon has been assigned to a number of ”supergroups”?
a. Class Carnivora.
b. Order Carnivora.
c. Phylum Protists
d. Class Chordata.
e. Order Mammalia