DNA made from an RNA template will be incorporated into the virus capsid of
A) Retroviridae.
B) Herpesviridae.
C) Hepadnaviridae.
D) bacteriophage families.
E) influenzavirus.
C
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A person has a mutation in the gene for DNA uracil glycosylase. What is the most likely result of this mutation?
A. an increase in mutations B. the inability to produce mRNA that has uracil in it C. the inability to produce mRNA that has cytosine in it D. Nothing. This enzyme is only involved in silent mutations. E. None of the answer options is correct.
The decision to initiate an action potential is made at the:
A. synapse. B. axon hillock. C. cell body. D. dendrite.
The geneticist Theodosis Dobzhansky famously wrote that "nothing makes sense in biology except in the light of _________".
Fill in the blank(s) with correct word
A student designed an experiment to see if plants grow better when watered with a sugar solution. He divided the plants into six groups, measured the initial height of each plant, and calculated the average height for each group. Once a week for two months, he watered the plants in each group using a different sugar solution for each plant group. At the end of two months, he measured the final height of each plant and calculated the average height for each group. The student’s data are shown in the table below.
Which of these statements explains why the plants in Groups E and F died? A. The high sugar content caused too much water to move out of the root cells. B. The high sugar content caused too much water to move into the root cells. C. The high sugar content prevented the plant from capturing energy. D. The high sugar content clogged the pores in the cell membranes