These two molecules are structural isomers. What is the difference between them?
A) The number of carbon atoms
B) The number of hydrogen atoms
C) The location of a double-bonded oxygen atom
D) Only one of them has a double bond between carbon atoms.
Answer: C) The location of a double-bonded oxygen atom
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Many species of angiosperms are self-incompatible due to the presence of the ____ -gene
Fill in the blank with the appropriate word.
Threshold potential refers to the membrane potential required to:
A. open voltage-gated potassium channels. B. initiate an action potential. C. open voltage-gated sodium channels. D. initiate an action potential AND open voltage-gated sodium channels.
It is now possible to analyze the genetics of the
new generation by a. fetoscopy. b. amniocentesis. c. chorionic villi sampling. d. preimplantation diagnosis. e. all of these.
Streptococcus pyogenes produces (hemolysin/protein A/M protein) and thereby avoids phagocytosis
What will be an ideal response?