Compare the lytic cycle and the lysogenic cycle of bacteriophages
What will be an ideal response?
Ans: In the lytic cycle, the phage infects a bacterium, produces large numbers of progeny phage, and the host bacterium is lysed, releasing the progeny. In the lysogenic cycle, the phage inserts its genome into the bacterial genome and it is stably inherited along with the bacterial chromosome. The process of induction releases the prophage genome and the lytic cycle commences.
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What type of chemical reaction must occur for electrons to flow from one molecule to the next and
supply the energy for metabolism?
a. acid/base b. reduction/oxidation c. exothermic d. trimolecular e. phosphorylation
Chloroplasts arose by endosymbiosis of ______.
A. an aerobic bacterium B. a photosynthetic bacterium C. an anaerobic bacterium D. an aerobic archaeon E. a photosynthetic archaeon
Ions and polar molecules that are electrically attracted to water molecules are ________
Fill in the blank(s) with correct word
On the Mohs scale, the softest material, ______, is given a value of 1 and the hardest material, diamond, is given a value of ____.
What will be an ideal response?