Which type of bond holds the two strands of DNA together?
a. ionic
b. network
c. polar covalent
d. hydrogen
e. non-polar covalent
D
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Dmitri Ivanovski demonstrated that TMV was not spread via bacteria by
A. transmitting sap of infected plants from generation to generation. B. filtering sap from an infected plant through pores smaller than bacteria, and then applying it to a healthy plant. C. spraying sap from an infected plant onto a healthy plant. D. sterilizing sap from an infected plant and then applying it to a healthy plant. E. treating an infected plant with a broad spectrum of antibiotics before extracting sap.
Which term represents the unequal distribution of yolk in an egg?
a. cleavage b. gastrulation c. involution d. neurulation e. polarity
What is the most likely source of various
hangover symptoms?
a. acetate b. acetaldehyde c. ethanol d. alcohol dehydrogenase e. carbon dioxide
In order to obtain a stable outer shell of electrons, carbon forms four __________
Fill in the blank(s) with the appropriate word(s).