Daphnia will switch from parthenogenesis to sexual reproduction under all of the following conditions except:
A. warm temperatures.
B. decreased food supply.
C. cool temperatures.
D. accumulation of wastes.
E. None of the answer options would cause
Daphnia to switch.
A
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Which one of the following pairs includes junctional complexes that perform similar functions?
A. tight junctions and adherens junctions B. tight junctions and desmosomes C. desmosomes and adherens junctions D. desmosomes and plasmodesmata
What is the primary determinant of how far an agent travels into the respiratory tract?
a. size of the agent b. immune status of the host c. amount of mucus d. depth of breathing e category of organism
Because carbon requires four additional electrons to fill its outermost shell, it has a natural tendency to form four covalent bonds with other atoms, making it an ideal element for forming structures in living cells
Indicate whether the statement is true or false
Who originally discovered the process of bacterial transformation?
A. Griffith B. Meselson and Stahl C. Chargaff D. Hershey and Chase E. Watson and Crick