The correct answer is Step B
Explanation:
The lysogenic and lytic cycles are processes of replication for viruses. These two processes involve different steps. In general, the first stage involves attachment and penetration as the virus enters the host cell. This step is followed by the provirus, which means the genome of the virus is integrated into the DNA of the cell, this step is also mentioned in the model as part of step B "the provirus is formed". Moreover, the formation of the provirus is key as the nutrients of the host cell and genome are used for replication. Thus, in the diagram, the provirus is formed in step B.
<span>One molecule of glucose can yield 36 ATP after glycolysis and aerobic respiration.
This question is a bit tricky. Glucose can produce a total of 38 ATP after glycolysis in aerobic respiration but it will need</span> 2 ATP because you need ATP to move NADH to mitochondria <span>so it will yield net amount 36 ATP.
Sometimes, </span>2 ATP in the preparatory phase is also subtracted resulting in 34 ATP.
Answer:
D. Single-stranded
Explanation:
DNA normally has a <em>double-stranded </em>structure. Each strand is composed by nitrogenous bases, sugars and phospates; strongly binded together by chemical bonds. The strands are bonded to each other, however, by relatively <em>weak interactions </em>between the hydrogen atoms in the nitrogenous bases in each strand. The energy supplied by heat is enough to break the weak interactions between hydrogens, but not enough to break the strong chemical bonds that make up the strands.
The lac operon is an operon required for the transport and metabolism of
lactose in Escherichia coli and many other entric bacteria. It includes
the promoter, regulatory and the operator.
Answer: C. repressor gene
