Hereditary information is encoded in a single, circular DNA molecule in most prokaryotes. Which of
the following is FALSE regarding the bacterial chromosome?
a. The DNA of the bacterial chromosome is replicated prior to segregation.
b. Bacterial cells can replicate their DNA very rapidly.
c. Bacterial cells utilize a mitotic spindle to segregate their replicated DNA.
d. The bacterial chromosome has genes that control binary fission.
e. DNA replication begins at the origin of replication.
C
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How can epidemiologist differentiate between common-source and host-to-host epidemics based only on the incidence of disease?
What will be an ideal response?
The Cas9 nuclease is able to cleave target DNA at a single precise site by ________.
A. recognizing a palindromic sequence on the DNA and cleaving at that site leaving sticky ends B. associating with a single-stranded DNA molecule that binds to its complement on the genome to be cleaved C. using a guide RNA that hybridizes to a unique sequence on the target DNA molecule D. altering its active site to bind to and cleave any DNA sequence that is targeted
Photosynthesis is conducted in ___________
a. the cell wall b. chloroplasts c. the nucleus d. the cell membrane
How much of the available sunlight energy is usually converted into an ecosystem's gross primary productivity?
a. 1 % b. 2 % c. 5 % d. 10 % e. 25 %